Welding of single crystal superalloy CMSX-4: Experiments and modeling

被引:0
|
作者
Dye, D [1 ]
Conlon, KT [1 ]
Lee, PD [1 ]
Rogge, RB [1 ]
Reed, RC [1 ]
机构
[1] Univ London Imperial Coll Sci Technol & Med, Royal Sch Mines, Dept Mat, London SW7 2BP, England
来源
关键词
CMSX-4; welding; residual stress; finite element method; neutron diffraction;
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中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The residual stresses in a gas tungsten arc weld of the single crystal superalloy CMSX-4 have been examined using neutron diffraction techniques. The longitudinal component of the residual stress field was found to be dominant, reaching a value of 650 MPa in the weld zone. In order to rationalise the results, finite element modeling was carried out. Strategies are suggested for the manufacture of a single crystal weld that is not subject to strain-induced recrystallization during heat treatment.
引用
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页码:485 / 491
页数:7
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