Ductilizing Ti19Zr19Hf19Nb19TM5Be19 (TM = Fe, Co, Ni and Cu) high-entropy bulk metallic glass composites via in-situ precipitated refractory high-entropy alloy dendrites

doi:10.1016/j.intermet.2022.107755

IMR OpenIR

	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
通讯作者	Zhu, Z. W.(zwzhu@imr.ac.cn)
	2023
发表期刊	INTERMETALLICS
ISSN	0966-9795
卷号	152 页码:10
摘要	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.
关键词	High -entropy bulk metallic glasses High -entropy alloys Cross slip Dislocation multiplication Tensile ductility
资助者	National Natural Science Foundation of China ; Chinese Academy of Sciences ; Qingdao city
DOI	10.1016/j.intermet.2022.107755
收录类别	SCI
语种	英语
资助项目	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研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000886724900003
出版者	ELSEVIER SCI LTD
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/176834
专题	中国科学院金属研究所
通讯作者	Zhu, Z. W.
作者单位	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
推荐引用方式 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.