Effect of alloying oxygen on the microstructure and mechanical properties of Zr-based bulk metallic glass

doi:10.1016/j.actamat.2021.117345

CORC > 金属研究所 > 中国科学院金属研究所

	Effect of alloying oxygen on the microstructure and mechanical properties of Zr-based bulk metallic glass
	Zhou, W. H.1,2; Duan, F. H.1; Meng, Y. H.1,2; Zheng, C. C.1,3; Chen, H. M.3; Huang, A. G.4; Wang, Y. X.1; Li, Y.1
刊名	ACTA MATERIALIA
	2021-11-01
卷号	220 页码:12
关键词	Bulk metallic glass Alloying oxygen Ductile-brittle transition Shear transformation zone Local ordering
ISSN号	1359-6454
DOI	10.1016/j.actamat.2021.117345
通讯作者	Wang, Y. X.(yinxiaowang@imr.ac.cn) ; Li, Y.(liyi@imr.ac.cn)
英文摘要	Due to the high solubility limit of oxygen in Zr, dissolution of oxygen in the Zr-based alloys is unavoidable. However, as an alloying element, the effect of oxygen on the microstructure and mechanical properties of monolithic Zr-based bulk metallic glasses (BMGs) is rarely reported. Here, we systematically investigated the evolution of microstructure and mechanical properties of monolithic Zr61Cu25Al12Ti2 BMGs with alloying oxygen content ranging from 650 at. ppm to 5600 at. ppm. With increasing oxygen content from 650 at. ppm to 3500 at. ppm, the compressive plasticity only decreased slightly, from 2.00 +/- 0.85% to 1.60 +/- 0.91%; however, it plunged to 0.77 +/- 0.33% when the oxygen content was further increased to 5600 at. ppm. The threshold oxygen content level for the ductile-brittle transition was revealed at 3500 at. ppm, and the embrittlement at high oxygen content is closely related with a number of changes in microstructure: sharply increases in the size of shear transformation zone (STZ) and in the degree of local ordering, including the imperfect ordered packing (IOP) atomic clusters and large medium-range ordering (MRO) domains. The above findings not only advance the understanding of the effect of alloying oxygen on the microstructure and mechanical properties, but also help to design Zr-based BMGs with excellent performance, promoting their wider commercial application. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
资助项目	Shenyang National Laboratory for Materials Science ; National Natural Science Foundation of China[51801208]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000706782800006
资助机构	Shenyang National Laboratory for Materials Science ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/166573]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Y. X.; Li, Y.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China 4.Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Zhou, W. H.,Duan, F. H.,Meng, Y. H.,et al. Effect of alloying oxygen on the microstructure and mechanical properties of Zr-based bulk metallic glass[J]. ACTA MATERIALIA,2021,220:12.
APA	Zhou, W. H..,Duan, F. H..,Meng, Y. H..,Zheng, C. C..,Chen, H. M..,...&Li, Y..(2021).Effect of alloying oxygen on the microstructure and mechanical properties of Zr-based bulk metallic glass.ACTA MATERIALIA,220,12.
MLA	Zhou, W. H.,et al."Effect of alloying oxygen on the microstructure and mechanical properties of Zr-based bulk metallic glass".ACTA MATERIALIA 220(2021):12.