Specifications

Title: Superplastic behavior of reciprocating extruded Mg-6Zn-1Y-0.6Ce-0.6Zr from rapidly
solidified ribbons
Authors: Guo, Xuefeng1 ; Yang, Wenpeng1, 2 ; Ren, Fang3/郭学峰;杨文鹏;
Author affiliation: 1 School of Materials Science and Engineering, Henan Polytechnic
University, Jiaozuo 454000, China
2 School of Materials Science and Engineering, Xi'An University of Technology, Xi'an 710048,
China
3 School of Economics and Management, Henan Polytechnic University, Jiaozuo 454000, China
Corresponding author: Guo, X. ([e-mail])
Source title: Journal Wuhan University of Technology, Materials Science Edition
Abbreviated source title: J Wuhan Univ Technol Mater Sci Ed
Volume: 27
Issue: 6
Issue date: December 2012
Publication year: 2012
Pages: 1033-1037
Language: English
ISSN: 10002413
CODEN: JWUTE8
Document type: Journal article (JA)
Publisher: Wuhan Ligong Daxue, 122, Luoshi Road Wuhan Hubei, 430070, China
Abstract: RRE-Mg66 alloy with a composition of Mg-6.0%Zn-1.0%Y-0.6%Ce-0.6Zr was prepared
by combinatorial processes of rapid solidification, reciprocating extrusion and extrusion.
Microstructure was evaluated on SEM and TEM. The average grain size of the alloy is 0.7 μm, the
size of the second phase at grain boundary is 0.15 μm, and the size of the intragranular
precipitates in round shape is less than 20 nm. Superplastic behavior of the material was
investigated in a temperature range of 150 to 250 C and initial strain rate range of 3.3×10-4 to
3.3×10-2 s-1 in air. The highest elongation of 270% was obtained at 250 C and 3.3× 10-3 s-1.
High-strain-rate superplasticity and low-temperature superplasticity were achieved. The
superplasticity results from intragranular sliding (IGS) at temperatures from 170 to < 200 C and
grain boundaries sliding (GBS) at 250 C. At 200 C a combination of IGS and GBS contributes to the
superplastic flow. © 2012 Wuhan University of Technology and Springer-Verlag Berlin Heidelberg.
Number of references: 18
Main heading: Rapid solidification
Controlled terms: Extrusion - Grain boundaries - Strain rate - Superplasticity -
Zinc - Zirconium
Uncontrolled terms: Average grain size - Grain boundaries sliding - High-strain-rate
superplasticity - Intragranular precipitates - Low temperature superplasticity - Rapidly
solidified - Reciprocating extrusion - Superplastic behavior
Classification code: 933.1 Crystalline Solids - 933 Solid State Physics - 549.3 Nonferrous
Metals and Alloys excluding Alkali and Alkaline Earth Metals - 546.3 Zinc and Alloys -
535.2.2 Metal Forming Practice - 531.2 Metallography - 531 Metallurgy and
Metallography - 422 Strength of Building Materials; Test Equipment and Methods - 421
Strength of Building Materials; Mechanical Properties