Simultaneously enhancing strength and toughness of Zr-based bulk metallic glasses via minor Hf addition

doi:10.1016/j.intermet.2019.106685

CORC > 金属研究所 > 中国科学院金属研究所

	Simultaneously enhancing strength and toughness of Zr-based bulk metallic glasses via minor Hf addition
	Zhu, Y. H.1,2; Zhu, Z. W.1; Chen, S.1; Fu, H. M.1; Zhang, H. W.1; Li, H.1; Wang, A. M.1; Zhang, H. F.1
刊名	INTERMETALLICS
	2020-03-01
卷号	118 页码:7
关键词	Bulk metallic glass Minor addition Compressive properties impact toughness Fracture mechanisms Free volume
ISSN号	0966-9795
DOI	10.1016/j.intermet.2019.106685
通讯作者	Zhu, Z. W.(zwzhu@imr.ac.cn)
英文摘要	Zr65.5-xHfxNb3Cu13Ni11Al7.5 = 0.0, 0.5, 1.0, 1.5 and 2.0 at.%) bulk metallic glasses (BMGs) were successfully prepared by copper mold casting. The effects of minor Hf addition on the mechanical properties and fracture mechanisms were investigated. The quasi-static compressive mechanical properties of Zr65.5-.HfxNb3Cu13-Ni 11Al(7.5) alloys were significantly improved by Hf addition. The optimum compressive fracture strength (at) and fracture strain (et) are 1516 MPa and 2.6%, respectively, for the Zr-64.5Hf(1),oNb(3)Cu(13)Ni(1) 1Al(7.5) alloy. The impact toughness of the Zr64Hf1.5Nb3Cu13Ni11Al7.5 alloy (At = 127 kJ/m(2)) is nearly four times than that of the Zr(65.5)Nb(3)Cu(13)Ni(11)Al(7.)5 alloy (Ak = 33 kJ/m2). The increase of the fracture surface area and the ratio of vein-like patterns regions caused by Hf addition play an important role in fracture energy dissipation under dynamic loading. The dependence of mechanical properties on the Hf content is closely related to the variation of free volume in the current alloys. The relationship between the Hf addition and the free volume change is discussed in detail. These results may provide new insights into simultaneously enhancing the plasticity and toughness of BMGs with minor alloying.
资助项目	National Key Research and Development Program[2018YFB0703402] ; National Natural Science Foundation of China[51790484] ; National Natural Science Foundation of China[51531005] ; Liao Ning Revitalization Program[XLYC1807062] ; Liao Ning Revitalization Program[XLYC1802078] ; Shenyang Amorphous Metal Manufacturing Co.
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000517854000005
资助机构	National Key Research and Development Program ; National Natural Science Foundation of China ; Liao Ning Revitalization Program ; Shenyang Amorphous Metal Manufacturing Co.
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137540]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhu, Z. W.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Y. H.,Zhu, Z. W.,Chen, S.,et al. Simultaneously enhancing strength and toughness of Zr-based bulk metallic glasses via minor Hf addition[J]. INTERMETALLICS,2020,118:7.
APA	Zhu, Y. H..,Zhu, Z. W..,Chen, S..,Fu, H. M..,Zhang, H. W..,...&Zhang, H. F..(2020).Simultaneously enhancing strength and toughness of Zr-based bulk metallic glasses via minor Hf addition.INTERMETALLICS,118,7.
MLA	Zhu, Y. H.,et al."Simultaneously enhancing strength and toughness of Zr-based bulk metallic glasses via minor Hf addition".INTERMETALLICS 118(2020):7.