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
  • 2005-2009  (4)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Effect of Aging and Microstructure on Mechanical Rolling CuAlNi Shape Memory Alloy (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 3326-3331 
    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: CuAlNi shape memory alloy with Cu-13.5Al-4.5Ni(wt%) composition was prepared bycross-rolling method and the aging effect, phase transformation characteristics, microstructuralvariation were investigated. Transformation temperature was greatly increased in aged specimens at250˚C. Transformation temperature was not changed after the second reversed transformation, andMs point was same in most specimens with third reversed transformation cycle. The variation of Mspoint was not seen with aging at 100˚C, but it was decreased with aging at 250˚C. Transformationtemperatures appear to be constant, to an measurable extent, in specimens prepared by both hotrollingand cross-rolling at 900˚C. Plate shaped-specimen with the thickness of about 1mm wasprepared by cross-rolling treatment at 350˚C. The transformation temperatures did not change afterthe second transformation-reverse transformation cycling, and specially transformation starttemperature was the same in most specimens experiencing third thermal cycle and thereafter.Undesirable tweed-like structure was observed in 250˚C-aged specimen after a cross-rolling at350˚C. On aging the specimen prepared by cross-rolling, G.P zone was formed easier than that of γ2phase. This phase was transformed to plate-like θ phase during aging
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.3326.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
    Properties of Boron Fiber Reinforced Aluminum Matrix Composites Fabricated by Pulsed Current Hot Pressing (PCHP) (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 3139-3144 
    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: Boron-fiber-reinforced Al-matrix composite was fabricated by a pulsed current hotpressing (PCHP) process at a pressure of 32MPa for 600s. It was found that the boron fiber andthe Al-matrix were well bonded when the PCHP process was performed at a holding temperature of773K. No interfacial reaction layer was observed along the interface between the boron fiber andthe matrix when PCHP was done at 773K for 600s. Tensile deformation carried out at roomtemperature for the composite showed that the tensile yield stress increased with increasing volumefraction of the boron fiber in the composite. The composite with 17.2 vol.% of boron fiberpresented a tensile yield stress of 600MPa. This value was about 90% the yield stress estimated bya force equilibrium equation of a composite taking into account the direction of fiber axis
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.3139.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
    Mechanical Properties of Fe-Pd Ferromagnetic Shape Memory Alloy Thin Films Prepared by Dual Source DC Sputtering (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 3173-3178 
    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 this work is to quantitatively clarify the shape memory behavior ofFe-Pd films containing ~30at%Pd by thermal cycling testing under various constant stresses.Fe-Pd films (4 $m thick) were deposited onto Si wafers with thermally formed 1$m-thick SiO2layer using a dual-source dc magnetron sputtering apparatus. The deposited films were allannealed at 900˚C for 60 min followed by iced water quenching. Perfect shape recovery wasobserved for Fe-30.0at%Pd film when the applied stress was lower than 300 MPa. The maximumrecoverable strain was ~0.6%. Fe-29.2at%Pd film, on the other hand, showed unrecovered strainafter thermal cycling even if the applied stress was 40 MPa. XRD measurements of theFe-29.2at% Pd film before and after thermal cycling revealed irreversible fcc-bct martensitictransformation that occurred during cooling process at a temperature around -80˚C. The criticalstress of Fe-Pd films, at which plastic deformation commences to occur, is higher for films with 30at% Pd than for films with 29.2 at% Pd, which is practically advantageous. The Ms temperature ofthese films is lower than room temperature when no bias stress is applied, while it becomes higherthan room temperature when appropriate bias stress is applied, obeying Clapeyron-Clausius law
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.3173.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
    Scanning Anomalous Small-Angle Scattering as a Tool to Examine Welded Bulk Glass (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 475-479 (Jan. 2005), p. 3401-3404 
    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: Small-angle scattering measurements utilizing anomalous dispersion effect just below the Zr and Ni K edge have been made for welded Zr-based amorphous materials. The measurements were carried out at a bending magnet beam-line 40B of SPring8. A small and parallel X-ray beam generated at the third generation synchrotron is suitable for nanostructure mapping of heterogeneous materials,whose structure varies with less than a millimeter scale. The remelted and heat-affected zones were examined for electron-beam welded Zr-Ni-Cu-Al alloys. Merits and the characteristics, as well as its present limitations of scanning small-angle scattering with a use of anomalous dispersion effect is discussed as a tool to examine microstructure in the spatially inhomogeneous materials in macroscopic scale as well as microscopic scale
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.475-479.3401.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...