THERMODYNAMICS OF THE BAINITIC TRANSFORMATION IN A CU-ZN-AL ALLOY

被引：8
|
作者：
HSU, TY
ZHOU, XW
机构：
[1] Department of Materials Science, Shanghai Jiao Tong University, Shanghai
来源：
ACTA METALLURGICA ET MATERIALIA | 1991年 / 39卷 / 11期
关键词：
D O I：
10.1016/0956-7151(91)90077-E
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The driving forces of two possible bainitic reactions within the bainitic transformation temperature range have been calculated for a Cu-Zn-Al alloy. The results show that DELTA-G-beta'--> alpha' and DELTA-G-beta'--> beta'1 + alpha < 0 in this transformation temperature range. Accordingly, the bainitic transformation can only proceed by the diffusional reaction beta'--> beta', + alpha. Furthermore, the driving force of 9R ordering transition of alpha has also been calculated. On account of DELTA-G-alpha --> alpha' < 0, the disordered alpha-phase produced after the diffusional bainitic transformation may further transform into the ordered one with 9R structure.
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页码：2615 / 2619
页数：5
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