Effects of processing parameters on liquation cracking of 6005A alloy weldments

被引:2
|
作者
Choi, JH
Lee, DH
Kim, J
Shin, DH
Kim, YS
机构
[1] Hongik Univ, Dept Met & Mat Sci, Seoul 121791, South Korea
[2] Dongyang Gangchul, R&D Ctr, Taejon 306020, South Korea
[3] Hanyang Univ, Dept Met & Mat Engn, Ansam 425791, South Korea
来源
METALS AND MATERIALS-KOREA | 2000年 / 6卷 / 04期
关键词
6005A aluminum alloy; extrusion; weldment; liquation cracking;
D O I
10.1007/BF03028088
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The effects of the characteristic microstructure developed in extruded 6005A alloys on tensile properties, fatigue strength, and liquation cracking in the heat affected zone of weldments were investigated, An insitu observation of the grain growth occurring in the sample was made with an optical microscope with a hot stage to determine the temperature of the excessive grain growth during extrusion. The extruded samples were heat heated under various conditions and welded using a gas metal arc welding process. The results indicated that liquation occurred mainly at coarse grain boundaries and significantly influencing the mechanical properties of the joint.
引用
收藏
页码:395 / 399
页数:5
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