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Superplasticity and cavitation of recycled AZ31 magnesium alloy fabricated by solid recycling process

Version 2 2024-06-13, 07:45
Version 1 2014-10-27, 16:42
journal contribution
posted on 2024-06-13, 07:45 authored by Y Chino, R Kishihara, K Shimojima, H Hosokawa, Y Yamada, C Wen, H Iwasaki, M Mabuchi
Superplastic behaviour of Mg-alloy AZ31 was investigated to clarify the possibility of its use for superplastic forming (SPF) and to accurately evaluate material characteristics under a biaxial stress by utilizing a multi-dome test. The material characteristics were evaluated under three different superplastic temperatures , 643, 673, and 703 K in order to determine the most suitable superplastic temperature. Finite Element Method (FEM) simulation of rectangular pan forming was carried out to predict the formability of the material into a complex shape. The superplastic material properties are used for the simulation of a rectangular pan. Finally, the simulation results are compared with the experimental results to determine the accuracy of the superplastic material characteristics. The experimental results revealed that the m values are greater than 0.3 under the three superplastic temperatures, which is indicative of superplasticity. The optimum superplastic temperature is 673 K, at which a maximum m value and no grain growth were observed. The results of the FEM simulation revealed that certain localized thinning occurred at the die entrance of the deformed rectangular pan due to the insufficient ductility of the material. The simulation results also showed that the optimum superplastic temperature of AZ31 is 673 K.

History

Journal

Materials transactions

Volume

43

Pagination

2437-2442

Location

Sendai, Japan

ISSN

1345-9678

eISSN

1347-5320

Language

eng

Notes

Special issue on plasticity and its applications.

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2002, The Japan Institute of Metals

Issue

10

Publisher

Japan Institute of Metals