| 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 | |
| Corresponding Author | Zhu, Z. W.(zwzhu@imr.ac.cn) |
| 2020-03-01 | |
| Source Publication | INTERMETALLICS
 |
| ISSN | 0966-9795 |
| Volume | 118Pages:7 |
| Abstract | 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. |
| Keyword | Bulk metallic glass Minor addition Compressive properties impact toughness Fracture mechanisms Free volume |
| Funding Organization | National Key Research and Development Program ; National Natural Science Foundation of China ; Liao Ning Revitalization Program ; Shenyang Amorphous Metal Manufacturing Co. |
| DOI | 10.1016/j.intermet.2019.106685 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000517854000005 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/137541 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhu, Z. W. |
| Affiliation | 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 |
| Recommended Citation 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. |
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