Microstructure and micro-mechanical properties of Cu based amorphous composites with shape-memory crystals

	Microstructure and micro-mechanical properties of Cu based amorphous composites with shape-memory crystals
	Yuan Xiaopeng 1,2; Zhao Yanchun1,2 ; Kou Shengzhong1,2 ; Zhao Zhiping 1,2; Li Chun-yan1,2 ; Yuan Zizhou1,2
	2017
发表期刊	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
ISSN	1002185X
卷号	46 期号:1 页码:35-38
摘要	Tapered Cu50Zr42Al8 alloy with good glass-forming ability was fabricated by copper mould suction casting. Cubic AlCu2Zr and B2-ZrCu, thermal-induced martensitic B19'-ZrCu phases form on the glass matrix along the radial direction structure. Size effects on micro-mechanical properties and a unique crack healing behavior were studied. Micro-hardness of monolithic bulk metallic glass (BMG) displays "smaller is softer" trend, that is, the softer surface and the harder center. Whereas the lager size composites possess a softer center and a harder surface, due to the integrative action of the secondary phases. Amorphous matrix is toughened by TRIP (transition induced plasticity) effect of shape-memory phase as well as weakened and embrittled by AlCu2Zr crystal. After annealing, self-healing of Vickers indentation crack occurs as the thermoelastic transformation of shape-memory crystals. As loading, stress-induced martensites transform from B2 to B19', along with volume expansion. Annealed upon the reverse transformation temperature, B19' to B2 transform accompanied by a volume shrinkage, and a restoring force from the structure stress is set up to drive the crack closure. Copyright © 2017, Northwest Institute for Nonferrous Metal Research. Published by Elsevier BV. All rights reserved.
关键词	Aluminum alloys Casting Crack closure Glass Martensitic transformations Metallic glass Microhardness Self-healing materials Shrinkage Stress analysis Ternary alloys Zircaloy Bulk metallic glass composites Micromechanical behavior Micromechanical property Reverse transformation temperature Self-healing Shape memory Stress-induced martensite Vickers indentation cracks
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000393538900007
出版者	Rare Metals Materials and Engineering Press
EI入藏号	20171203457272
EI主题词	Copper alloys
来源库	Compendex
分类代码	415 Metals, Plastics, Wood and Other Structural Materials - 531 Metallurgy and Metallography - 531.2 Metallography - 534.2 Foundry Practice - 541.2 Aluminum Alloys - 544.2 Copper Alloys - 812.3 Glass - 951 Materials Science
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114389
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
通讯作者	Zhao Yanchun
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Wenzhou Res Inst Pump & Valve Engn, Wenzhou 325105, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 兰州理工大学
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 兰州理工大学
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Yuan Xiaopeng,Zhao Yanchun,Kou Shengzhong,et al. Microstructure and micro-mechanical properties of Cu based amorphous composites with shape-memory crystals[J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,2017,46(1):35-38.
APA	Yuan Xiaopeng,Zhao Yanchun,Kou Shengzhong,Zhao Zhiping,Li Chun-yan,&Yuan Zizhou.(2017).Microstructure and micro-mechanical properties of Cu based amorphous composites with shape-memory crystals.Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,46(1),35-38.
MLA	Yuan Xiaopeng,et al."Microstructure and micro-mechanical properties of Cu based amorphous composites with shape-memory crystals".Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 46.1(2017):35-38.