Nonequilibrium segregation in an Fe-Ni-Ti alloy and a ductile-brittle-ductile transition

被引：24

作者：

Heo, NH

机构：

[1] Dept. of Mat. Sci. and Engineering, Massachusetts Inst. of Technology, Cambridge

来源：

ACTA MATERIALIA | 1996年 / 44卷 / 04期

关键词：

D O I：

10.1016/1359-6454(95)00283-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Brittleness in an Fe-19.8Ni-2.71Ti ternary alloy has been investigated and a theoretical calculation performed based on a regular solution model. The alloy showed a ductile-brittle-ductile transition with aging time. This was due to the grain boundary segregation of titanium and its subsequent desegregation into the matrix, deeply related to a precipitation reaction in the matrix. The calculated results of the nonequilibrium segregation of the elements were semiquantitatively in agreement with the experimental.

引用

页码：1581 / 1589

页数：9

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