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

被引：9
作者：
Karthik, G. M. [1 ]
Ram, G. D. Janaki [1 ]
Kottada, Ravi Sankar [1 ]
机构：
[1] Indian Inst Technol Madras, Mat Joining Lab, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2017年 / 48卷 / 06期
关键词：
SEVERE PLASTIC-DEFORMATION; MECHANICAL-PROPERTIES; HOT CRACKING; ZN ALLOY; MICROSTRUCTURE;
D O I：
10.1007/s11663-017-1100-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
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 beta (Mg17Al12) as well as by refining the matrix grain size.
引用
收藏
页码：3270 / 3280
页数：11
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