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  • 1
    Electronic Resource
    Electronic Resource
    Fiber Orientation Control and Evaluation of Characteristics of Short Fiber Reinforced Metal Matrix Composite Fabricated by Low-Pressure Infiltration Process (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 475-479 (Jan. 2005), p. 2559-2562 
    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
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.475-479.2559.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Prediction of Microstructures in Freezing of Cast Irons (1997)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 4-5 (Oct. 1997), p. 529-534 
    Details
    ISSN: 1662-8985
    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
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.4-5.529.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Electrodeposition of Metallic Nanowires in Nanoporous Polycarbonate Films (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 1253-1257 
    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: A polycarbonate membrane filter with numerous cylindrical nanopores was used as atemplate for growing metallic nanowires such as Ni, Co and Fe. The nanoporous template withpore-diameter of 150 nm, pore-length of 6000 nm, and pore-density of 108 pore•cm-2 was modified asa cathode with sputter-deposited gold layer. Inside the nano-pores, the metallic nanowires wereelectrochemically deposited from an acidic sulfate solution containing metal ions. The growth rate ofmetallic nanowires depended on the cathode potential during electrodeposition. The diameter ofelectrodeposited nanowires corresponded to that of nanopores in the template. TEM diffractionpattern suggested that each metallic nanowire composed of a single crystalline structure
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.1253.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Novel Separation Technique of Particle Reinforced Metal Matrix Composites by Fused Deposition Method (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 1028-1032 
    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: To develop a novel separation technique of matrix alloys from metal matrix composite,separation experiments for various kinds of particle reinforced metal matrix composites (PRMMCs)were carried out. The Al-4mass%Cu alloy, Al-7mass%Si alloy and cast iron were used as matrix. TheSiC particles (particle size: 75μm) and Al2O3 particles (particle size: 120μm) were used asreinforcement. The PRMMC specimen was placed in a silica tube container with a small nozzle(nozzle size: 0.75mm) at the bottom and was melted by H.F. induction heating. Then the moltenPRMMC specimen was forced to flow out through the nozzle by applying a certain pressure of Ar gas.Most of the molten matrix alloy flowed out through the nozzle and the remainder in the containerconsisted of the reinforcements and a part of the matrix alloy. The amount of separated matrix alloyincreased with decreasing the volume fraction of reinforcement particles in PRMMC specimens.With decreasing the fabrication temperature from 1273K to 1073K, the amount of matrix alloyseparated from SiCP/Al-7mass%Si alloy composites increased. It is considered that a reaction layerformed on the surface of SiC particles at 1273K improves the wettability between the molten matrixalloy and SiC particle, which prevents the separation of molten matrix alloy from reinforcements. Onthe other hand, the amount of separated matrix alloy from 20vol% Al2O3P/cast iron composites wasvery high due to no reaction layer formed at interface between Al2O3 particle and cast iron
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.1028.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Solid Free-Form Fabrication of Metallic Components (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 15-17 (Feb. 2006), p. 175-180 
    Details
    ISSN: 1662-8985
    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 influence of process parameters on shape stability and surface smoothness ofcylindrical and rectangular castings produced by fused spinning deposition (FSD) method wasinvestigated. The optimum conditions to control the shape and smoothness of side surface of thecastings produced by the FSD method without water-cooling were limited to a narrow range ofprocess parameters. The casting with a stable shape and a smooth side surface was obtained with theaid of water-cooling. The tensile strength of the castings produced by the FSD method was 1.4 timeshigher than those of the specimens cast into metal-mold and sand-mold, due to a finer equiaxed grainstructure of the FSD castings. Employing the combination of the deposition patterns for tube and solidcastings, some practical metallic components were fabricated by the FSD method
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.15-17.175.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Partition of solute elements during solidification of iron-carbon-chromium alloys (1982)
    Springer
    Journal of materials science 17 (1982), S. 135-144 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The partition coefficients of chromium between austenite and liquid iron,k Cr A/L , were determined from the experiment of rapid cooling of iron-carbon hypo-eutectic alloys containing a small amount of chromium from coexisting solid—liquid states; the partition coefficients between eutectic and its liquid,k 0,Cr, andk′ 0,Cr, for the stable and metastable eutectic solidifications were obtained from the zone-melting experiment of iron—carbon eutectic alloys containing a small amount of chromium. Chromium was rejected to liquid iron on the crystallization of primary austenite,k Cr A/L 〈1. On the eutectic solidification, chromium was enriched in eutectic liquid for the stable system,k 0,Cr〈1, and was conversely diluted in the liquid for the metastable system,k′ 0,Cr〉1. The relationship between effective and equilibrium partition coefficients given by Burtonet al. was observed for the results of the zone melting experiment and, from the relationship, the thickness of boundary layer in the liquid ahead of the solid—liquid interface was found to be 0.17 mm for the stable system and 0.11 mm for the metastable system. Thermodynamic calculation of the partition coefficients of chromium and carbon proved to represent the observed partition coefficients well.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809045
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  • 7
    Electronic Resource
    Electronic Resource
    Hot hardness of cementite (1983)
    Springer
    Journal of materials science 18 (1983), S. 225-230 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The hot hardness was measured on the (010) plane of primary cementite in unidirectionally solidified iron-carbon, iron-carbon-chromium, and iron-carbon-boron alloys at temperatures up to 973 K, using a hot hardness tester equipped with an indenterheating system. The hardness of paramagnetic cementite against temperature was represented by the Ito-Shishokin relation. On the other hand, the hardness of ferromagnetic cementite deviated to low values from the Ito-Shishokin relation found for paramagnetic cementite. This deviation occurred from magnetostriction, because the thermal softening coefficient of cementite was found to relate to the thermal expansion coefficient regardless of the magnetic state similar to that found with fcc and bcc metals. Chromium and boron increased the hot hardness of cementite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00543829
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  • 8
    Electronic Resource
    Electronic Resource
    Coefficients for equilibrium partition of a third element between solid and liquid in iron-carbon base ternary alloys and their relation to graphitization during iron-carbon eutectic solidification (1984)
    Springer
    Journal of materials science 19 (1984), S. 2306-2318 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract During iron-carbon eutectic solidification, the coefficients for partition of a third element between the eutectic liquid and its solid were evaluated thermodynamically. The coefficientk M A/L for the equilibrium partition of the third element (M) between austenite and liquid iron largely depended on the interaction between carbon and the third element and a simplified method for the evaluation ofk M A/L was introduced. The coefficients,K S andK M, for the partition of the element between the eutectic liquid and its solid in the stable and metastable eutectic solidification, respectively, were also calculated fromk M A/L and the coefficientk M C/A for the equilibrium partition of the element between cementite and austenite. It was indicated by the thermodynamics of the free energy for the co-existing phases that the effect of a third element on graphitization occurring during eutectic solidification was related quantitatively to the value of ΔK which was represented byK S-K M. The effect of a third element on the difference between the stable and metastable eutectic temperatures and on the carbon activity of liquid iron was closely related to ΔK or the equilibrium partition coefficient,k M C/A .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01058107
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  • 9
    Electronic Resource
    Electronic Resource
    Theoretical calculation of eutectic temperature and composition in iron-carbon base ternary and multicomponent alloys (1987)
    Springer
    Journal of materials science 22 (1987), S. 643-650 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Changes in the stable and metastable eutectic temperatures and compositions of the iron-carbon system by addition of alloying elements were calculated on the basis of the geometrical thermodynamics. The influences of alloying elements on these temperatures and compositions exhibit periodicities. The periodicities of the influences on the stable and metastable eutectic temperatures have a maximum in raising these temperatures, and the periodicities of the influences on the eutectic compositions have a maximum in lowering them, in each periodic row. The calculation of eutectic temperatures was extended to Fe-C base multicomponent alloys, and the calculated eutectic temperatures Were in good agreement with experimental ones given by Oldfield.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01160782
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  • 10
    Electronic Resource
    Electronic Resource
    Hot hardness of (Fe, Cr)3C and (Fe, Cr)7C3 carbides (1984)
    Springer
    Journal of materials science 19 (1984), S. 2546-2554 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Hot hardness was measured on the primary carbides, (Fe, Cr)3C and (Fe, Cr)7C3, in unidirectionally solidified iron-carbon-chromium hypereutectic alloys with chromium more than 4.8 wt %. The hardness-temperature relation was represented by two Ito-Shishokin formulae,H v =A(— BT), and thus was drawn by two lines on a semilogarithmic graph. The inflection temperature where the two lines intersected was found at 730 to 860 K for (Fe, Cr)3C carbide containing 0 to 14 wt % Cr, increasing with an increase in the chromium concentration in the carbide, and at about 910 K for (Fe, Cr)7C3 carbide containing 36 to 76 wt % Cr. With increasing chromium concentration in each carbide, the hardness of the carbide increased and the thermal softening coefficients decreased. The effect of chromium on the hardness, the inflection temperature and the thermal softening coefficients was more pronounced for (Fe, Cr)3C carbide than for (Fe, Cr)7C3 carbide. Each of the thermal softening coefficients,B 1(T〈T t),B 2(T〉T t), the inflection temperature,T t, room-temperature hardness,H v(T RT), and the hardness atT t,H v(T t), related linearly to the chromium concentration in the carbides, and hence the hot hardness of the carbides could be expressed as functions of temperature and chromium concentration in the carbides. The relationships betweenH v(T RT) andH v(T t) and between the thermal softening coefficient,B 2, and the activation energy for creep,Q c(kJ mol−1), were represented by the following equations:H v(T t)≃0.7H v(T RT),B 2=1.26/Q c.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00550808
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