Effect of Y concentration on the microstructure and mechanical properties of as-cast Mg-Zn-Y-Zr alloys

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	Effect of Y concentration on the microstructure and mechanical properties of as-cast Mg-Zn-Y-Zr alloys; Effect of Y concentration on the microstructure and mechanical properties of as-cast Mg-Zn-Y-Zr alloys
	D. K. Xu; W. N. Tang; L. Liu; Y. B. Xu; E. H. Han
	2007 ; 2007
发表期刊	Journal of Alloys and Compounds ; Journal of Alloys and Compounds
ISSN	0925-8388 ; 0925-8388
卷号	432 期号:1-2 页码:129-134
摘要	In this work, the influence of element Y on the mechanical properties of the as-cast Mg-5.5Zn-xY-0.8Zr alloys (with element Y content of 0, 1.08, 1.97 and 3.08 wt.%) has been investigated and compared. The results showed that the alloy with Y content of 1.08 wt.% had the superior tensile strength, but its ductility was the lowest. When Y content reached 1.97 or 3.08 wt.%, the tensile strength of the alloys decreased obviously, but the ductility had a little improvement. X-ray phase analysis showed that when Y content was 1.08 wt.%, the alloy mainly contained I-phase and alpha-Mg matrix, whereas when Y content was 1.97 or 3.08 wt.%, besides I-phase and alpha-Mg matrix, W-phase would be formed. And the diffraction peak of W-phase intensified with the increase of element Y content. Based on fracture observations, the influence of I-phase and W-phase on the mechanical properties of the alloys has been explained, respectively. It revealed that I-phase was closely bonded with the Mg matrix and could effectively retard the basal slip, and then strengthened the alloy greatly. However, W-phase was easily cracked during the tensile process, which degraded the mechanical properties. (c) 2006 Elsevier B.V. All rights reserved.; In this work, the influence of element Y on the mechanical properties of the as-cast Mg-5.5Zn-xY-0.8Zr alloys (with element Y content of 0, 1.08, 1.97 and 3.08 wt.%) has been investigated and compared. The results showed that the alloy with Y content of 1.08 wt.% had the superior tensile strength, but its ductility was the lowest. When Y content reached 1.97 or 3.08 wt.%, the tensile strength of the alloys decreased obviously, but the ductility had a little improvement. X-ray phase analysis showed that when Y content was 1.08 wt.%, the alloy mainly contained I-phase and alpha-Mg matrix, whereas when Y content was 1.97 or 3.08 wt.%, besides I-phase and alpha-Mg matrix, W-phase would be formed. And the diffraction peak of W-phase intensified with the increase of element Y content. Based on fracture observations, the influence of I-phase and W-phase on the mechanical properties of the alloys has been explained, respectively. It revealed that I-phase was closely bonded with the Mg matrix and could effectively retard the basal slip, and then strengthened the alloy greatly. However, W-phase was easily cracked during the tensile process, which degraded the mechanical properties. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. chinese acad sci, met res inst, environm corros ctr, shenyang 110016, peoples r china.;xu, dk (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china;dkxu@imr.ac.cn ; chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. chinese acad sci, met res inst, environm corros ctr, shenyang 110016, peoples r china.;xu, dk (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china;dkxu@imr.ac.cn
关键词	As-cast Mg Alloys As-cast Mg Alloys Mechanical Properties Mechanical Properties I-phase And W-phase I-phase And W-phase Mg-zn-y-zr Alloy Mg-zn-y-zr Alloy Behavior Behavior Phase Phase
URL	查看原文 ; 查看原文
WOS记录号	WOS:000245486300029 ; WOS:000245486300029
引用统计	被引频次：180[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33951
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. K. Xu,W. N. Tang,L. Liu,et al. Effect of Y concentration on the microstructure and mechanical properties of as-cast Mg-Zn-Y-Zr alloys, Effect of Y concentration on the microstructure and mechanical properties of as-cast Mg-Zn-Y-Zr alloys[J]. Journal of Alloys and Compounds, Journal of Alloys and Compounds,2007, 2007,432, 432(1-2):129-134, 129-134.
APA	D. K. Xu,W. N. Tang,L. Liu,Y. B. Xu,&E. H. Han.(2007).Effect of Y concentration on the microstructure and mechanical properties of as-cast Mg-Zn-Y-Zr alloys.Journal of Alloys and Compounds,432(1-2),129-134.
MLA	D. K. Xu,et al."Effect of Y concentration on the microstructure and mechanical properties of as-cast Mg-Zn-Y-Zr alloys".Journal of Alloys and Compounds 432.1-2(2007):129-134.