Effects of Nd or Zr addition on microstructure and mechanical properties of as-cast Mg-Zn-Y alloy

doi:10.2320/matertrans.M2016035

	Effects of Nd or Zr addition on microstructure and mechanical properties of as-cast Mg-Zn-Y alloy
	Chen, Ti Jun; Zhang, Da Hua; Wang, Wei; Ma, Ying; Hao, Yuan
刊名	Materials Transactions
	2016
卷号	57 期号:8 页码:1287-1295
关键词	Diffusion bonding Magnesium castings Mechanical properties Microstructure Neodymium Shrinkage Tensile testing Ternary alloys Textures Yttrium alloys Zinc alloys Zinc castings Zircaloy Intergranular modes Mg-Zn-RE alloy Microstructure and mechanical properties Shrinkage porosity Strengthening phase Ternary phase Ternary phasis Transgranular modes
ISSN号	13459678
DOI	10.2320/matertrans.M2016035
英文摘要	The effects of Nd or Zr addition on microstructure and mechanical properties of casting Mg-Zn-RE alloy have been investigated. The results indicate that the optimum contents of Nd and Zr are 0.5% and 0.3% respectively. The less or higher contents all increase grain size and accelerate the formation of shrinkage porosity, and thus decrease tensile properties and change fracture regime from transgranular mode to intergranular mode during tensile tests. The Mg-Zn-RE ternary phases transform from W (Mg3Zn3(Nd, Y)2) in turn into W + Z (Mg12Zn(Nd, Y)) and Z as the Nd content increases and their distribution gradually changes from small discontinuous lath form to continuous network form. The grain bonding strength of an alloy with a certain amount of W phase that distributes in a discontinuous form is high than that of the alloy with the Z phase, and thus the W phase is an ideal strengthening phase. The alloy with 0.5 Nd and 0.3% Zr, named ZW21 alloy, has the smallest grains and highest grain bonding strength, and so has the highest comprehensive mechanical properties. ©2016 The Japan Institute of Metals and Materials.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	Japan Institute of Metals (JIM)
WOS记录号	WOS:000383451200012
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112499]
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Chen, Ti Jun,Zhang, Da Hua,Wang, Wei,et al. Effects of Nd or Zr addition on microstructure and mechanical properties of as-cast Mg-Zn-Y alloy[J]. Materials Transactions,2016,57(8):1287-1295.
APA	Chen, Ti Jun,Zhang, Da Hua,Wang, Wei,Ma, Ying,&Hao, Yuan.(2016).Effects of Nd or Zr addition on microstructure and mechanical properties of as-cast Mg-Zn-Y alloy.Materials Transactions,57(8),1287-1295.
MLA	Chen, Ti Jun,et al."Effects of Nd or Zr addition on microstructure and mechanical properties of as-cast Mg-Zn-Y alloy".Materials Transactions 57.8(2016):1287-1295.