Use of Friction Stir Processing for Improving Heat-Affected Zone Liquation Cracking Resistance of a Cast Magnesium Alloy AZ91D

被引:0
作者
G. M. Karthik
G. D. Janaki Ram
Ravi Sankar Kottada
机构
[1] Indian Institute of Technology Madras,Department of Metallurgical and Materials Engineering, Materials Joining Laboratory
来源
Metallurgical and Materials Transactions B | 2017年 / 48卷
关键词
Friction Stir Processing (FSP); HAZ Liquation Cracking; Cast Magnesium Alloy AZ91D; Fusion Welding; Detailed Microstructural Studies;
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摘要
In this work, a cast magnesium alloy AZ91D was friction stir processed. Detailed microstructural studies and Gleeble hot ductility tests were conducted on the as-cast and the FSPed samples to comparatively assess their heat-affected zone liquation cracking behavior. The results show that the use of FSP as a pretreatment to fusion welding can strikingly improve the heat-affected zone liquation cracking resistance of alloy AZ91D by reducing the amount and size of the low-melting eutectic β (Mg17Al12) as well as by refining the matrix grain size.
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页码:3270 / 3280
页数:10
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