Low temperature superplasticity in an AZ91 magnesium alloy processed by ECAE

Journal Article · Sat Mar 15 00:00:00 EST 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(96)00444-7· OSTI ID:464806

Mabuchi, M ^[1]; Iwasaki, H; Yanase, K ^[2]; Higashi, K ^[3]

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1. National Industrial Research Inst. of Nagoya (Japan)
2. Himeji Inst. of Tech., Himeji, Hyogo (Japan)
3. Osaka Prefecture Univ., Sakai, Osaka (Japan)

Magnesium alloys are especially suitable for use of the structural components in aerospace and outerspace applications due to their low density. In general, however, magnesium alloys have poor workability because of their h.c.p. structure. Therefore it is desirable to improve the poor workability, and superplastic forming is expected to be put into the processing in practical applications. In the present work, equal channel angular extrusion (ECAE), which allows one to attain high shear strain, has been conducted on an AZ91 magnesium alloy. The alloy processed by ECAE exhibited superplastic behavior at low temperatures of 448 and 473 K, which are about 0.5T{sub m}.

• Sponsoring Organization: Department of the Army, Washington, DC (United States)
• OSTI ID: 464806
• Journal Information: Scripta Materialia, Vol. 36, Issue 6; Other Information: PBD: 15 Mar 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
EXTRUSION
PLASTICITY
MAGNESIUM BASE ALLOYS
ALUMINIUM ALLOYS
ZINC ALLOYS
MANGANESE ADDITIONS
GRAIN SIZE
STRAIN RATE
STRAINS
EXPERIMENTAL DATA