Reciprocating extrusion of rapidly solidified Mg–6Zn–1Y–0.6Ce–0.6Zr alloy

Mg–6.0%Zn–1.0%Y–0.6%Ce–0.6%Zr alloy was prepared by reciprocating extrusion (RE) from rapidly solidified (RS) comminuted ribbons. Tensile tests were performed at a strain rate of 4.0 × 10 −4 s −1 and the engineering stress–strain curve contained two distinct yield regions. The first yield region had...

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Bibliographic Details
Published in:	Journal of materials processing technology Vol. 187; pp. 640 - 644
Main Authors:	Guo, X.F., Shechtman, D.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 12-06-2007
Subjects:	Rapid solidification Reciprocating extrusion Wrought magnesium alloy Reciprocating extrusion Rapid solidification Wrought magnesium alloy
Online Access:	Get full text
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Summary:	Mg–6.0%Zn–1.0%Y–0.6%Ce–0.6%Zr alloy was prepared by reciprocating extrusion (RE) from rapidly solidified (RS) comminuted ribbons. Tensile tests were performed at a strain rate of 4.0 × 10 −4 s −1 and the engineering stress–strain curve contained two distinct yield regions. The first yield region had an upper and a lower yield point. Tensile yield strength of 336 MPa and elongation of 27% were achieved. The microstructures were analyzed with optical microscope, SEM and TEM. The average grain size of the matrix was ∼1.2 μm, and the dimension of the strengthening particles, homogeneously dispersed within the matrix, was ∼50 nm. The dimpled tensile fractures observed are characteristic of ductile fracture.
ISSN:	0924-0136
DOI:	10.1016/j.jmatprotec.2006.11.056