Reverse transformations in CuAlNiMnTi alloy at elevated temperatures

被引：28

作者：

Wei, ZG ^{[1
]}

Peng, HY ^{[1
]}

Yang, DZ ^{[1
]}

Chung, CY ^{[1
]}

Lai, JKL ^{[1
]}

机构：

[1] CITY UNIV HONG KONG,DEPT PHYS & MAT SCI,HONG KONG,HONG KONG

来源：

ACTA MATERIALIA | 1996年 / 44卷 / 03期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/1359-6454(95)00233-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The reverse transformation sequences in an as-quenched Cu-11.88Al-5.06Ni-1.65Mn-0.96Ti (wt%) shape memory alloy during heating or isochronical annealing up to 650 degrees C have been studied by means of differential scanning calorimetry, high temperature X-ray diffraction as well as transmission electron microscopy and optical observations. The results show that at least seven stages of structural evolution, depending upon heating rate, can be distinguished: the reverse martensitic transformation and the martensite stabilization; atomic reordering in parent phase; two phase separation in D0(3) and the reversion; atomic disordering in matrix; bainitic transformation; D0(3) = B2 transition; and the precipitation of equilibrium phases. The different dependence of the evolution stages on heating rate is analyzed and discussed.

引用

页码：1189 / 1199

页数：11

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