Incipient grain boundary melting

被引：9

作者：

Campbell, J. ^{[1
]}

机构：

[1] Univ Birmingham, Dept Met & Mat, Birmingham B15 2TT, W Midlands, England

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2009年 / 25卷 / 01期

关键词：

Incipient melting; Heat affected zone porosity; Bifilms; Defects; Casting; Welding;

D O I：

10.1179/174328408X311080

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The porosity and loss of properties that usually follows incipient melting of grain boundary phases during heat treatment or welding is suggested to be the result of the expansion accompanying melting, which is not reversed on resolidification because of the opening of extrinsic defects introduced during casting that the author has called bifilms. The asymmetry of melted phases, and techniques that can avoid the degradation of properties are consistent with this hypothesis.

引用

页码：125 / 126

页数：2

共 6 条

[1] Entrainment defects [J].

Campbell, J .

MATERIALS SCIENCE AND TECHNOLOGY, 2006, 22 (02) :127-145

[2] Entrainment defects [J].

Campbell, J .

MATERIALS SCIENCE AND TECHNOLOGY, 2006, 22 (02) :127-145

[3]

Gauthier J., 1995, AFS Transactions, V103, P849

[4] Use of modelling to optimise homogenisation of high Mn heavy section ductile iron castings using partial melting [J].

Nili-Ahmadabadi, M. ;

Feghahati, S. .

INTERNATIONAL JOURNAL OF CAST METALS RESEARCH, 2007, 20 (02) :53-57

[5] Intergranular liquation cracking in heat affected zone of a welded nickel based superalloy in as cast condition [J].

Ojo, O. A. .

MATERIALS SCIENCE AND TECHNOLOGY, 2007, 23 (10) :1149-1155

[6]

Shivkumar S., 1990, AFS Transactions, V98, P913

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