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Microstructure and mechanical properties of a sand-cast Mg-Nd-Zn alloy
D. Wu; R. S. Chen; W. Ke
2014
Source PublicationMaterials & Design
ISSN0261-3069
Volume58Pages:324-331
AbstractThe microstructures and mechanical properties of a sand-cast Mg-Nd-Zn alloy in the as-cast, solution-treated and peak-aged conditions were investigated. The as-cast alloy was comprised of alpha magnesium matrix and Mg12Nd eutectic compounds. The eutectic compounds dissolved into the matrix and small Zr-containing particles precipitated at grain interiors, due to the solution treatment. After the solution treatment, two kinds of cooling manner, either cooling in air or quenching in water, were employed. It was worth noting that some basal precipitates formed in the matrix during the in-air cooling process after solution treatment, which led to the succedent weak ageing hardening response and low strength in peak-aged condition. The hardness, yield strength, ultimate tensile strength and elongation at room temperature, of the samples in the T61 condition, were HV81, 191 MPa, 258 MPa and 4.2%, respectively. When tensile tested at high temperature, they exhibited serrated flow. Moreover, the casting surface of the tensile testing bar also had a great influence on its mechanical properties. (C) 2014 Elsevier Ltd. All rights reserved.
description.department[wu, d. ; chen, r. s. ; ke, w.] chinese acad sci, grp magnesium & their applicat, inst met res, shenyang 110016, peoples r china. ; chen, rs (reprint author), chinese acad sci, grp magnesium & their applicat, inst met res, 62 wencui rd, shenyang 110016, peoples r china. ; rschen@imr.ac.cn
KeywordMg-nd-zn Alloy Sand-cast Heat Treatment Microstructure Mechanical Property Tensile Properties Serrated Flow Precipitate Magnesium Zr
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72932
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
D. Wu,R. S. Chen,W. Ke. Microstructure and mechanical properties of a sand-cast Mg-Nd-Zn alloy[J]. Materials & Design,2014,58:324-331.
APA D. Wu,R. S. Chen,&W. Ke.(2014).Microstructure and mechanical properties of a sand-cast Mg-Nd-Zn alloy.Materials & Design,58,324-331.
MLA D. Wu,et al."Microstructure and mechanical properties of a sand-cast Mg-Nd-Zn alloy".Materials & Design 58(2014):324-331.
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