| Ductilizing Ti19Zr19Hf19Nb19TM5Be19 (TM = Fe, Co, Ni and Cu) high-entropy bulk metallic glass composites via in-situ precipitated refractory high-entropy alloy dendrites | |
| Liu, M. L.1,2; Li, W.2,3; Zeng, S.2; Li, Y. F.2; Fu, H. M.2,3; Li, H.2,3; Wang, A. M.2,3; Lin, X. P.1; Zhang, H. F.2,3; Zhu, Z. W.2,3 | |
| Corresponding Author | Zhu, Z. W.(zwzhu@imr.ac.cn) |
| 2023 | |
| Source Publication | INTERMETALLICS
 |
| ISSN | 0966-9795 |
| Volume | 152Pages:10 |
| Abstract | In this work, a series of Ti19Zr19Hf19Nb19TM5Be19 (at.%, TM = Fe, Co, Ni and Cu) high-entropy bulk metallic glass composites (HE-BMGCs) were successfully developed to address the absence of tensile ductility in high -entropy bulk metallic glasses (HE-BMGs). It is shown that the mechanical properties of HE-BMGCs are jointly affected by the two constituent phases of refractory high-entropy alloy (RHEA) dendrites and HE-BMG matrix. The present composites show that the good tensile ductility as well as excellent work-hardening capability at ambient temperature. Based on the post-deformation microstructure and theoretical analyses, cross slips dominate the deformation mechanism of HE-BMGCs, and it is found that the dislocation multiplication mech-anism composed of dislocation pinning and double cross-slip is very prevalent in current composites. Therein, the dislocation multiplication of RHEA dendrites facilitates the inhibition and retardation to the propagation of shear bands in the HE-BMG matrix, which is responsible for the good tensile ductility of HE-BMGCs. Additionally, the excellent work-hardening capability of composites is attribute to severe dislocation interactions caused by intrinsic local-regional multicomponent fluctuations and dislocation cross-slips in RHEA dendrites. Our research results not only aid in understanding the underlying deformation mechanism of HE-BMGCs, but also offer a novel perspective for designing the ductile high-entropy dual-phase alloys. |
| Keyword | High -entropy bulk metallic glasses High -entropy alloys Cross slip Dislocation multiplication Tensile ductility |
| Funding Organization | National Natural Science Foundation of China ; Chinese Academy of Sciences ; Qingdao city |
| DOI | 10.1016/j.intermet.2022.107755 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[52074257] ; National Natural Science Foundation of China[51790484] ; Chinese Academy of Sciences[ZDBS-LY- JSC023] ; Qingdao city[19-9-2-1-wz] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000886724900003 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/176837 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhu, Z. W. |
| Affiliation | 1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, M. L.,Li, W.,Zeng, S.,et al. Ductilizing Ti19Zr19Hf19Nb19TM5Be19 (TM = Fe, Co, Ni and Cu) high-entropy bulk metallic glass composites via in-situ precipitated refractory high-entropy alloy dendrites[J]. INTERMETALLICS,2023,152:10. |
| APA | Liu, M. L..,Li, W..,Zeng, S..,Li, Y. F..,Fu, H. M..,...&Zhu, Z. W..(2023).Ductilizing Ti19Zr19Hf19Nb19TM5Be19 (TM = Fe, Co, Ni and Cu) high-entropy bulk metallic glass composites via in-situ precipitated refractory high-entropy alloy dendrites.INTERMETALLICS,152,10. |
| MLA | Liu, M. L.,et al."Ductilizing Ti19Zr19Hf19Nb19TM5Be19 (TM = Fe, Co, Ni and Cu) high-entropy bulk metallic glass composites via in-situ precipitated refractory high-entropy alloy dendrites".INTERMETALLICS 152(2023):10. |
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