STRESS ENHANCED GRAIN-BOUNDARY SEGREGATION OF IMPURITY ELEMENTS IN A LOW-ALLOY STEEL

被引：22
|
作者：
MISRA, RDK
BALASUBRAMANIAN, TV
机构：
来源：
ACTA METALLURGICA ET MATERIALIA | 1990年 / 38卷 / 07期
关键词：
D O I：
10.1016/0956-7151(90)90197-O
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Grain boundary segregation isotherms determined by Auger electron spectroscopy (AES) have been employed to elucidate the effect of applied stress on grain boundary chemistry of a low alloy 2.6 NiCrMoV steel. A comparison of grain boundary segregation isotherms of low alloy steel isothermally heat treated at 773 K under constant load and unstressed conditions strongly indicates that stress accelerates grain boundary segregation of impurity elements N, P and S. This enhancement of grain boundary coverage of elements N, P and S is explained in terms of structure of grain boundary, described commonly as an array of linked deltahedra containing holes of varying size and shape. © 1990.
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页码：1263 / 1266
页数：4
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