Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Electronic Resource  (20)
  • 2005-2009  (20)
Source
Material
  • Electronic Resource  (20)
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Characterization of Al3Fe Particle within Al-Al3Fe Functionally Graded Material Fabricated by Semi-Solid Forming (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 475-479 (Jan. 2005), p. 1503-1506 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Near net shape forming of Al-Al3Fe functionally graded materials (FGMs) have been studied. FGM billets fabricated by a centrifugal method were extruded under the condition of a mixture of molten Al eutectic and solid Al3Fe particles. Both distribution and profile of Al3Fe particles were characterized by and the variation of volume fraction of Al3Fe particles was observed. Shore hardness of the Al matrix was also measured to evaluate the strength of the FGM before and after the semi-solid forming associated with the character of distributed Al3Fe particles. It wasconfirmed that Shore hardness increased with increasing the volume fraction of Al3Fe particles and after the semi-solid forming than before. This was due to the fact that Al3Fe particles after the semi-solid forming became fine by shear stress introduced by liquid Al flow
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.475-479.1503.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Aluminum Matrix Texture and Particle Characterization in Al-Al〈sub〉3〈/sub〉Ti FGMs Produced by a Centrifugal Solid-Particle Method (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 105 (July 2005), p. 415-420 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: The centrifugal solid-particle method has proved to be effective in producing functionally graded materials (FGMs). In this study, Al-Al3Ti FGMs, were produced by this centrifugal method, from an Al-5 wt % Ti master alloy. Applied centrifugal forces were 30, 60 and 120G (units of gravity). Samples from the outer surface of each specimen were cut and aluminum matrix texture analyzed by Schulz reflection method. Analysis of the resulting pole figures indicates a preferred orientation along the (200) plane for the aluminum matrix crystals. Furthermore, increasing the applied centrifugal force enhances the orientation effect. Al3Ti platelet orientation and area fraction at the samples’ outer surface along three observation planes were also measured. The Al3Ti platelets in the outer region are orientated perpendicular to the centrifugal force direction along two of the observed planes, also an increase in centrifugal force leads to an increase in orientation in those two planes. The intermetallic particle volume fraction also increases with higher applied centrifugal force, although not significantly. A correlation appears to exist between particle orientation and the preferred orientation of the matrix
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/21/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.105.415.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Orientation Dependence of Ductility of Mg Single Crystals at Elevated Temperature (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 488-489 (July 2005), p. 193-196 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Orientation-controlled Mg single crystals were tensile tested at temperatures between 473 K and 673 K at a strain rate of 4.2 x 10-4 s-1 in vacuum. Though all the single crystals showed high ductility compared with that of polycrystals, the ductility of the single crystals strongly depended on the crystal orientation. The [27 -1 -26 1] single crystal showed 0.57 fracture strain, while the [3 8 -11 -1] single crystalshowed superplastic behavior of ductility over 1.8 strain. The observed strong orientation dependence of ductility seemed to be caused by orientation dependence of ease occurrence of dynamic recrystallization (DRX) in the single crystals during high-temperature deformation. The orientation dependence of ductility of Mgsingle crystals will be discussed in detail concerning crystallographical orientations of the single crystals, occurrence of DRX and fracture
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/10/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.488-489.193.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Biodegradable Fiber Reinforced Ti Composite Fabricated by Spark Plasma Sintering Method (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 3201-3206 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Ti and Ti alloys are particularly attractive materials as the metallic implant-material. Thisis because that these alloys have low shear modulus and the good biological compatibility with bone.However, interfacial adhesion ability of bone and Ti alloy is low. As improvement method of theinterfacial adhesion ability, bioaffinity material like hydroxyapatite has been coated on surface of theTi alloys. However, such bioaffinity materials have low strength and wear resistance. In this study, Ticomposites containing biodegradable poly-L-lactic-acid (PLLA) fiber were fabricated by sparkplasma sintering (SPS) method. The PLLA fiber plays a role as reinforcement in Ti matrix, and canbe gradually decomposed inside body with progress of time. By the decomposition of PLLA, pore isgenerated in Ti matrix, and bone simultaneously penetrates into the pore. Therefore, tightly bondbetween bone and Ti matrix can be expected. Using the Ti-PLLA composites fabricated by SPSmethod, microstructural observation and mechanical tests were performed. It was found thatTi-PLLA composite has laminate-layer structure with plate-like shape PLLA. Hardness and wearbehavior of Ti-PLLA composite has anisotropy due to its structure. However, strength of theTi-PLLA composite is low because of the imperfect sintering of Ti matrix. Since sintering of Timatrix can be improved by changing the temperature of SPS, Ti-PLLA composite with anisotropicmechanical properties can be expected by SPS method
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.3201.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Mechanical and Physical Properties of Ni〈sub〉3〈/sub〉Al-Based Alloys with Cr Carbides Dispersion (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 561-565 (Oct. 2007), p. 439-442 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Ni3Al-based alloys possess good oxidation resistance, moderate room and hightemperature strength and ductility. Introduction of Cr-carbide particles through a solidification routeis attempted to provide higher hardness and wear resistance. The mechanical and physicalproperties are measured at room temperature for several alloys with various carbon concentrationsup to 2.0 wt.%. Hardness and wear resistance as well as compressive strength increase withincreasing carbon concentration, while bend ductility decreases. Adhesion between carbides andmatrix phase is good, and cracks propagate mainly through carbides. The crystallographicorientation relationships between constituent phases are also attempted using electronback-scattering diffraction (EBSD) technique. The thermal conductivity is found to be less sensitiveto the alloy composition
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.439.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Co Addition Effect on the Precipitation Behavior of Laves Phase in Fe-10Cr Ferritic Alloy (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 561-565 (Oct. 2007), p. 1745-1748 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Ferritic heat-resistant steel comprises basic alloys of Fe-10mass%Cr-W. This studyinvestigates how stress, the addition of Co, and tempering before aging affect the precipitation ofthe Laves phase of Fe-10Cr-6W ferritic heat-resistant steel, which is used in ultra-supercriticalpower plants and nuclear reactor materials. The study also investigates the mechanical properties ofthe steel. Precipitation of the Laves phase by aging increases the tensile strength, but decreases theelongation and impact strength of the alloys. Toughness of the alloys decreases greatly as very finedisk-like Laves phases appear in early aging stage. The strength and impact value of the steeldecrease when the steel is tempered before aging. This is mainly due to decrease of density andincrease of the particle size in the Laves phase. Since precipitation of the Laves phase increases byaddition of Co; the strength increases and the elongation and impact value decrease
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.1745.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Grain Refinement Performance of Aluminium Cast-Alloy by Deformed Al-Al〈sub〉3〈/sub〉Ti Alloy Refiner (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 519-521 (July 2006), p. 1859-1864 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Grain refining experiments for casting of pure Al were conducted to evaluate the grainrefinement performance of an Al-5mass%Ti alloy refiner before and after cold rolling. Al3Tiparticles in the Al-Ti alloy refiner were efficiently fragmented by cold rolling. The size of theAl3Ti particles in cold rolled Al-Ti alloy refiner decreased from 280μm to 30μm with increasingreduction ratio of cold rolling. Mean size of α-Al grains in pure Al cast refined by the cold rolledAl-Ti alloy refiner decreased from about 500μm to 200μm with increasing the reduction ratio. Inorder to investigate mechanical property of the pure Al cast refined by the cold rolled Al-Ti alloyrefiner, Vickers hardness test and tensile test were conducted. Strength of the pure Al cast refinedby the cold rolled Al-Ti alloy refiner increased with increasing the reduction ratio. The strengthimprovement of pure Al cast refined by the cold rolled Al-Ti alloy refiner followed Hall-Petchrelationship. From obtained results, it was concluded that cold rolling for refiner is usefulpractical application for pure Al cast
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.519-521.1859.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Particle Distribution and Orientation in Al-Al〈sub〉3〈/sub〉Zr and Al-Al〈sub〉3〈/sub〉Ti FGMs Produced by the Centrifugal Method (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 492-493 (Aug. 2005), p. 609-614 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Al-Al3Zr and Al-Al3Ti functionally graded materials (FGMs) were produced by acentrifugal method from Al-5wt% Zr and Al-5wt% Ti alloys, respectively. Applied centrifugal forces were 30, 60 and 120G (units of gravity). Microstructural characterization was performed to evaluate the intermetallic particles’ distribution and orientation. Knoop hardness tests were carried out, with the indenter’s long diameter normal to the centrifugal force direction. Both the Al3Zr and the Al3Tiintermetallic particles are platelet in morphology. These platelets tend to be oriented normal to the centrifugal force direction. Higher applied centrifugal force increases both the intermetallic platelet volume fraction as well as their orientation in the outer regions of the fabricated FGM rings. Also higher orientation and volume fraction distribution are observed in the Al- Al3Ti FGMs. Knoop hardness measurements in general follow the same trend as the intermetallic particle volume fraction for each sample
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/10/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.492-493.609.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Formation of Compositional Gradient during Fabrication of FGMs by a Centrifugal In Situ Method (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 492-493 (Aug. 2005), p. 693-698 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The purpose of the present work is to study the formation of the compositional gradient during the fabrication of FGMs by a centrifugal in-situ method. Al-Al2Cu FGMs were fabricated by the centrifugal in-situ method using eutectic Al-33mass%Cu alloy, and the microstructures of fabricated FGMs were studied. It was found that the Al-Al2Cu FGMs could be fabricated by the centrifugal in-situ method from eutectic alloy. Based on the experimental results, the formation mechanism of the compositional gradient during the fabrication of FGM by the centrifugal in-situ method in the A-B alloy could be summarized as follows; 1) Partial separation of A and B elements in the liquid state occurs due to the density difference. 2) A compositional gradient is formed before the crystallization of the primary crystal. 3) The primary crystals in the matrix appear to depend on local chemical composition. 4) The primary crystals migrate according to density difference, and a further compositional gradient is formed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/10/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.492-493.693.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Graded Microstructure at Fiber (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 492-493 (Aug. 2005), p. 737-742 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The reaction at narrow holes method (RANH method) has been proposed for fabricating fiber reinforced metal (FRM), such as an intermetallic compound fiber / metal matrix composite. This study clarifies a microstructure at a fiber / metal matrix interface of FRM fabricated by using a combination of pure-copper and pure-aluminum in the RANH method. Pure-aluminum fiber was inserted into a narrow hole drilled in the copper matrix. The assembly comprising the pure-aluminum fiber and the pure-copper matrix was heated to a temperature greater than eutectic temperature of the copper-aluminum binary alloy. A molten aluminum reacted with copper to form an annular reacted region consisting of g1 intermetallic compound in a single phase near the edge of the narrow hole. The g1 intermetallic compound has very high hardness on the order of 800-900 HV. The annular reacted region may have a high tensile strength and may work as a reinforcing metal fiber in FRM
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/10/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.492-493.737.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...