Analysis of Microstructure and Texture Evolution in Mg-3Al-1Zn Alloy Processed Through Groove Rolling
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The mechanism of grain refinement in a AZ31 Mg alloy subjected to hot groove rolling is investigated up to large strain (εt ~ 2.5). The alloy shows enhanced yield strength without compromising ductility. The change in strain path during rolling has resulted in significant weakening of basal texture. The microstructure analyses show that dynamic recrystallization (DRX) contributed significantly to grain refinement and hence to the observed mechanical properties. The combined effects of DRX and texture evolution on mechanical properties have been addressed.
KeywordsAZ31 alloy dynamic recrystallization groove rolling texture
The authors acknowledge the help extended by Mr. K P Prakash and Mr. S. Manwatkar of Materials and Metallurgy Group, Vikram Sarabhai Space Centre (VSSC), during the alloy processing and metallographic characterization, respectively. The authors are also grateful to Director (VSSC) for encouragement and permission to publish this work.
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