Microstructure and mechanical properties of extruded Mg-6.5Gd-1.3Nd-0.7Y-0.3Zn alloy

侯秀丽; 曹占义; 张蕾蕾; 房大庆; 徐世伟; S.KAMADO; 王立民

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Microstructure and mechanical properties of extruded Mg-6.5Gd-1.3Nd-0.7Y-0.3Zn alloy

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摘要

The Mg-6.5Gd-1.3Nd-0.7Y-0.3Zn alloy ingot and sheet were prepared by casting and hot extrusion techniques,and the microstructure,age hardening behavior and mechanical properties were investigated.The results show that the as-cast alloy mainly containsα-Mg solid solution and compounds of Mg5RE and Mg24RE5（RE=Gd,Y and Nd）phases.The grain size is refined after hot extrusion,and the Mg5RE and Mg24RE5 compounds are broken during the extrusion process.The extruded alloy exhibits remarkable age hardening response and excellent mechanical properties in the peak-aging state.The ultimate tensile strength,yield strength and elongation are 310 MPa,201 MPa and 5.8%at room temperature,and 173 MPa,133 MPa and 25.0%at 300℃,respectively.

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《中国有色金属学报：英文版》 |2010年第s2期|508-512|共5页
作者
侯秀丽; 曹占义; 张蕾蕾; 房大庆; 徐世伟; S.KAMADO; 王立民;
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作者单位

1. Key Laboratory of Automobile Materials;

Ministry of Education;

Jilin University 2. State Key Laboratory of Rare Earth Resource Utilization;

Changchun Institute of Applied Chemistry;

Chinese Academy of Sciences 3. Department of Mechanical Engineering;

Nagao;

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原文格式 PDF
正文语种 chi
中图分类 TG146.22;
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Microstructure and mechanical properties of extruded Mg-6.5Gd-1.3Nd-0.7Y-0.3Zn alloy

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