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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.44  No.4 (2003)  >  pp.484-489

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Mechanical Properties and Blow Forming of Rolled AZ31 Mg Alloy Sheet

Hiroyuki Hosokawa1), Yasumasa Chino1), Koji Shimojima1), Yasuo Yamada1), Cui’e Wen1), Mamoru Mabuchi1) and Hajime Iwasaki2)
1) Institute for Structural and Engineering Materials, National Institute of Advanced Industrial Science and Technology
2) Division of Materials Science and Engineering, Graduate School of Himeji Institute of Technology

Rolling was conducted at 373–673 K for AZ31 Mg alloy; mechanical properties of the rolled Mg alloy were investigated by tensile and blow forming tests. The grain sizes of all the rolled specimens were smaller than that of the specimen prior to rolling. At tensile temperatures under 373 K, the rolled specimens showed much higher 0.2% proof stresses than the non-rolled specimens due to their fine-grained microstructure. However, the strength of the rolled specimens decreased significantly at 473 K. Superplastic behavior was obtained at 573–723 K for the specimens rolled at 498 K. Blow forming tests demonstrated that specimens rolled at 498 K exhibited a high degree of formability at 723 K.

magnesium alloy, hot rolling, grain refinement, mechanical properties, superplasticity, blow forming

Received: September 26, 2002
Accepted: December 05, 2002 , Published online: September 06, 2005
Copyright (c) 2005 The Japan Institute of Metals



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