Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/93149

Title

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

Author(s)

Chino, Yasumasa;  Kishihara, Ryuji;  Shimojima, Koji;  Hosokawa, Hiroyuki;  Yamada, Yasuo;  Wen, Cui'e;  Iwasaki, Hajime;  Mabuchi, Mamoru

Abstract

Superplastic behavior and cavitation have been investigated for the solid recycled AZ31 magnesium alloy made of machined chips. The elongation to failure of the solid recycled specimen was lower than that for the extruded specimen from a virgin block (virgin extruded specimen) at elevated temperature, although the strain rate sensitivity for the solid recycled specimen was the same as that for the virgin extruded specimen. The volume fraction of cavities and the total number of cavities for the solid recycled specimen were larger than those for the virgin extruded specimen. Moreover, cavity nucleation occurred not only at grain boundaries, but also in the grains for the solid recycled specimen. It is suggested that contamination of oxide particles at grain boundaries and in grains promotes cavity nucleation in the solid recycled specimen and adversely affects the elongation to failure.

Publication type

Journal article

Source

Materials Transactions, Vol. 43, no. 10 (2002), pp. 2437-2442

Publication year

2002

FOR Code(s)

0912 Materials Engineering

Keyword(s)

Cavitation;  Grain boundary sliding;  Grain refinement;  Hot extrusion;  Magnesium alloy;  Recycling;  Superplasticity

Publisher

Japan Institute of Metals

ISSN

1345-9678

Publisher URL

http://www.jim.or.jp/journal/e/43/10/2437.html

Copyright

Copyright © 2002.

Peer reviewed