CHARACTERISTICS OF TI50PD30NI20 HIGH-TEMPERATURE SHAPE-MEMORY ALLOY

被引：79

作者：

GOLBERG, D

XU, Y

MURAKAMI, Y

MORITO, S

OTSUKA, K

UEKI, T

HORIKAWA, H

机构：

[1] UNIV TSUKUBA,INST MAT SCI,TSUKUBA,IBARAKI 305,JAPAN

[2] FURUKAWA ELECT CORP LTD,YOKOHAMA RES & DEV LABS,NISHI KU,YOKOHAMA,KANAGAWA 220,JAPAN

来源：

INTERMETALLICS | 1995年 / 3卷 / 01期

基金：

日本学术振兴会;

关键词：

TRANSFORMATION TEMPERATURES; MARTENSITIC TRANSFORMATION; HIGH-TEMPERATURE SHAPE MEMORY ALLOYS; SHAPE MEMORY EFFECT; SUPERELASTICITY;

D O I：

10.1016/0966-9795(94)P3684-G

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The decrease in critical stress for slip with increasing temperature leads to the introduction of permanent strain and thus deteriorates shape memory (SM) characteristics of high-temperature SM alloys. Thermomechanical treatment consisting of cold-rolling and subsequent annealing at various temperatures, was applied for the first time to improve the high-temperature SM characteristics of the Ti50Pd30Ni20 alloy. Then, a systematic study of transformation temperatures, microstructure and associated mechanical behaviour at 443-548K was carried out. The remarkable improvement in SM characteristics was found-for the alloy cold-rolled to 24-25% reduction in thickness and annealed at 673K for 3.6 ks. In addition, superelasticity was observed for the first time in this alloy. Finally, the key factor for improvement of high-temperature SM characteristics in the alloy is pointed out.

引用

页码：35 / 46

页数：12

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