SOME ASPECTS OF THE 2 WAY SHAPE MEMORY EFFECT INDUCED BY PSEUDOELASTIC CYCLING IN CU-ZN-AL ALLOYS

被引：9
|
作者：
CESARI, E
PICORNELL, C
PONS, J
SADE, M
机构：
[1] UNIV ILLES BALEARS,DEPT FIS,CTRA VALLDEMOSSA,E-07071 PALMA DE MALLORCA,SPAIN
[2] CTR ATOM BARILOCHE,DIV MET,RA-8400 BARILOCHE,ARGENTINA
来源：
JOURNAL DE PHYSIQUE IV | 1991年 / 1卷 / C4期
关键词：
D O I：
10.1051/jp4:1991468
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The two-way shape memory effect (TWSME) induced by pseudoelastic cycling in Cu-Zn-Al single crystals has been studied. We analyzed the influence of the mechanical cycling characteristics (tensile or compressing) and of the presence of gamma-phase precipitates in the material. The two-way memory effect induced by compressing cycling appears after a smaller number of cycles than in tensile pseudoelastic cycling. The presence of gamma-phase precipitates also reduces the number of cycles needed to get the TWSME. Samples with TWSME are able to overcome some external stress when going to the martensitic shape until a threshold stress, sigma(th), value is reached. When higher opposing stresses are applied, the degradation of TWSME starts.
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页码：451 / 456
页数：6
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