Mechanical properties of Zr-based bulk metallic glasses with different Al contents

doi:10.13373/j.cnki.cjrm.2015.04.002

	Mechanical properties of Zr-based bulk metallic glasses with different Al contents
	Li, Chunyan 1,2; Kou, Shengzhong 1,2; Zhao, Yanchun 1,2; Yuan, Xiaopeng 1; Yuan, Zizhou 1,2
刊名	Xiyou Jinshu/Chinese Journal of Rare Metals
	2015-04-01
卷号	39 期号:4 页码:300-307
关键词	Aluminum alloys Compressive strength Copper alloys Crystalline materials Glass ceramics Mechanical properties Metals Microhardness Plastic deformation Scanning electron microscopy Strain Strain hardening Stress-strain curves Zircaloy Alloy compositions Amorphous structures Compressive plastic strain Compressive plasticity Copper mold casting methods Microhardness tester Universal testing machines Zr based bulk metallic glass
ISSN号	02587076
DOI	10.13373/j.cnki.cjrm.2015.04.002
英文摘要	(Zr64.8/90Cu14.85/90Ni10.35/90)90+xAl10-x bulk alloys with x=-4, -3, -2, 0, 2, 4 and 6 were prepared with copper mold casting method. The effects of Al contents on mechanical properties of Zr-based bulk metallic glasses were studied by X-ray diffraction(XRD), universal testing machine, microhardness tester and scanning electron microscope(SEM). The results showed that with the decrease of the content of Al, the structure of alloys changed from amorphous/crystal composite materials with mainly amorphous phase into completely amorphous materials, and then into amorphous/crystal materials with mainly crystalline phase, and finally into fully crystalline materials. It meant that Zr-based bulk metallic glasses with completely amorphous structure could be fabricated by adjusting Al content. The structure of the alloy was completely amorphous when x=-2, with alloy composition of Zr63.36Cu14.52Ni10.12Al12, and the compressive plastic strain (Εp) of the alloy was up to 20.6%. The yield strength (σs), maximum strength (σm) and facture strength (σf) were 1740.6, 2030.7 and 1510.5 MPa, respectively, and the "work-hardening" characteristic could be seen from the stress-strain curve. It demonstrated that Zr-based bulk metallic glasses with excellent compressive plasticity and high compressive strength could be fabricated by adjusting Al content. With the decrease of the Al content, the microhardness of alloy samples firstly increased and then decreased. When x=2, the structure of the alloy was amorphous/crystal composite material, and the hardness reached HV719.8, which indicated that higher microhardness was obtained in the alloy. ©, 2015, Editorial Office of Chinese Journal of Rare Metals. All right reserved.
语种	中文
出版者	Editorial Office of Chinese Journal of Rare Metals
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112816]
专题	材料科学与工程学院
作者单位	1.College of Material Science and Technology, Lanzhou University of Technology, Lanzhou; 730050, China; 2.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	Li, Chunyan,Kou, Shengzhong,Zhao, Yanchun,et al. Mechanical properties of Zr-based bulk metallic glasses with different Al contents[J]. Xiyou Jinshu/Chinese Journal of Rare Metals,2015,39(4):300-307.
APA	Li, Chunyan,Kou, Shengzhong,Zhao, Yanchun,Yuan, Xiaopeng,&Yuan, Zizhou.(2015).Mechanical properties of Zr-based bulk metallic glasses with different Al contents.Xiyou Jinshu/Chinese Journal of Rare Metals,39(4),300-307.
MLA	Li, Chunyan,et al."Mechanical properties of Zr-based bulk metallic glasses with different Al contents".Xiyou Jinshu/Chinese Journal of Rare Metals 39.4(2015):300-307.