MIGRATION OF VACANCIES IN STAINLESS-STEEL MEASURED BY POSITRON-ANNIHILATION

被引：22

作者：

DRYZEK, J ^{[1
]}

WESSELING, C ^{[1
]}

DRYZEK, E ^{[1
]}

CLEFF, B ^{[1
]}

机构：

[1] INST KERNPHYS,W-4400 MUNSTER,GERMANY

来源：

MATERIALS LETTERS | 1994年 / 21卷 / 02期

关键词：

D O I：

10.1016/0167-577X(94)90220-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The results of Doppler broadening studies of annealing processes in the commercial stainless steel are presented. Two stages were established in the temperature dependence of the S-parameter. The first one corresponds to the steep decrease of the S-parameter in the temperature range from room temperature up to 500-degrees-C and reflects annealing of defects introduced during the manufacture process. Three models of vacancy sinking and migration were considered. Taking into account diffusion of vacancies to the surface as well as to the grain boundaries gave the activation energy of vacancy diffusion equal to 1.215 +/- 0.016 eV. The increase and consequent decrease of the S-parameter in the temperature range from 600-degrees-C up to 1060-degrees-C in the second stage is considered as caused by the precipitation of the carbide M23C6.

引用

页码：209 / 214

页数：6

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