EFFECT OF HEAT-TREATMENT ON STRESS-INDUCED MARTENSITIC-TRANSFORMATION AND ASSOCIATED PSEUDOELASTICITY IN MONOCRYSTALLINE CU-AL-NI ALLOYS

被引：16

作者：

SAKAMOTO, H

NAKAI, Y

SHIMIZU, K

机构：

[1] Osaka Univ, Osaka, Jpn, Osaka Univ, Osaka, Jpn

来源：

TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS | 1987年 / 28卷 / 04期

关键词：

COPPER METALLOGRAPHY - Transformations - MATERIALS WITH MEMORY - STRESSES - Hysteresis - THERMAL EFFECTS - Hysteresis;

D O I：

10.2320/matertrans1960.28.264

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Effects of the heat treatment on the characteristics of various types of stress-induced martensitic transformations and associated pseudoelasticity in single crystals with LT AN BR 001 RT AN BR orientation of Cu-14. 1Al-4. 2Ni and Cu-14. 7Al-4. 2Ni(mass%) alloys have been investigated. Three kinds of heat treatments were given, that is, (a) rapid quench from 1273 K, (b) normal quench from 1273 K and (c) aging at 523 K for 3. 6 ks after the normal quench. As a result, various parameters characterizing the transformations have been found to vary with the heat treatment. These variations indicate that a previously observed anomaly on the temperature dependence of critical stresses for inducing a transformation above 470 K is due to an aging effect, and further that the interphase boundaries in a phase diagram with the temperature-stress coordinate shift by the heat treatment. Lattice constants of various martensite phases vary with heat treatment and temperature.

引用

页码：264 / 272

页数：9

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