scholarly journals On the Crossing of β1′ Martensite Crystals Associated with the Reversible Shape Memory Effect in Cu-Zn-Al Alloys

1980 ◽  
Vol 44 (8) ◽  
pp. 846-852 ◽  
Author(s):  
Kazuyoshi Takezawa ◽  
Kenji Adachi ◽  
Shin’ichi Sato
2003 ◽  
Vol 44 (12) ◽  
pp. 2732-2735 ◽  
Author(s):  
Toshihiro Omori ◽  
Yuji Sutou ◽  
Katsunari Oikawa ◽  
Ryosuke Kainuma ◽  
Kiyohito Ishida

1998 ◽  
Vol 46 (1) ◽  
pp. 137-147 ◽  
Author(s):  
M.O. Prado ◽  
F.C. Lovey ◽  
L. Civale

1991 ◽  
Vol 01 (C4) ◽  
pp. C4-451-C4-456
Author(s):  
E. CESARI ◽  
C. PICORNELL ◽  
J. PONS ◽  
M. SADE

1993 ◽  
Vol 34 (10) ◽  
pp. 888-894 ◽  
Author(s):  
J. Pons ◽  
M. Sade ◽  
F. C. Lovey ◽  
E. Cesari

2012 ◽  
Vol 727-728 ◽  
pp. 200-205 ◽  
Author(s):  
André Victor Traleski ◽  
Selauco Vurobi Jr. ◽  
Osvaldo Mitsuyuki Cintho

The mechanical alloying process provides alloys with extremely refined microstructure, reducing the need for alloying elements to grain growth restriction, as in casting techniques. The Cu-Al-Ni and Cu-Zn-Al alloys produced by casting may have the shape memory effect when plastically deformed at relatively low temperatures, returning to its original shape upon heating at a given temperature. This work aimed at the production of Cu-Al-Ni and Cu-Zn-Al alloys by mechanical alloying, followed by microstructural characterization and investigation of the shape memory effect by means of differential scanning calorimetry (DSC). Metal powders of Cu, Al, Ni and Cu, Zn, Al were processed in a SPEX high energy vibratory mill during 8 hours, with ball-to-powder weight ratio of 5:1. The milled products were characterized by X-ray diffraction. For each alloy, specimens with 8 mm diameter and 2 mm thickness were shapes by uniaxial pressing, sintered in a tube furnace with argon atmosphere, solubilized and then quenched in water. Samples were characterized by optical and scanning electron microscopy (SEM), Vickers hardness testing and DSC. An ultrafine microstructure was obtained in the Cu-Al-Ni alloy but the shape memory effect was not detected by DSC analysis because of second phase precipitation. The shape memory effect was not present in the Cu-Zn-Al alloy also, because of zinc oxidation during the sintering.


2005 ◽  
Vol 46 (7) ◽  
pp. 1604-1609 ◽  
Author(s):  
Masahiko Ikeda ◽  
Daisuke Sugano ◽  
Shingo Masuda ◽  
Michiharu Ogawa

1995 ◽  
Vol 05 (C2) ◽  
pp. C2-287-C2-292 ◽  
Author(s):  
F. C. Lovey ◽  
P. L. Rodriguez ◽  
J. Malarria ◽  
M. Sade ◽  
V. Torra

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