On the microstructure, mechanical properties and wear resistance of an additively manufactured Ti64/metallic glass composite

doi:10.1016/j.addma.2018.12.006

IMR OpenIR

	On the microstructure, mechanical properties and wear resistance of an additively manufactured Ti64/metallic glass composite
	Shen, Xiao-Jun 1,2; Zhang, Cheng 1,2; Yang, Yan-Ge 3; Liu, Lin 1,2
通讯作者	Zhang, Cheng(czhang@hust.edu.cn) ; Liu, Lin(lliu2000@mail.hust.edu.cn)
	2019
发表期刊	ADDITIVE MANUFACTURING
ISSN	2214-8604
卷号	25 页码:499-510
摘要	Selective laser melting (SLM) provides flexibility in creating novel metal-matrix composites (MMCs) with unique microstructures and enhanced mechanical properties over conventionally manufactured MMGs. In this study, a Zr-based metallic glass (MG) decorated Ti6Al4V (Ti64) composite with a unique hybrid nanostructure and enhanced mechanical properties and wear resistance was fabricated using SLM. The results revealed that a near-full dense and crack-free Ti-based composite was produced, with its reinforcements consisting of ultrafine beta dendrites set with partially crystallized MG nanobands uniformly distributed along the boundaries of the melt pool. The addition of MG significantly affected the solidification behavior of the Ti-liquid because of its higher dynamic viscosity and density as well as compositional effect on the phase stability. With such a unique nanostructured reinforcement, the Ti64/MG composite exhibited an enhanced yield strength (> 1 GPa) with reasonable ductility and fracture toughness. On the basis of the result of a theoretical analysis, we attributed the main strengthening mechanism to Orowan strengthening. The wear resistance was also much improved in the Ti64/MG composite, arising from the higher hardness of the nanostructured reinforcement and the formation of a more protective tribo-oxide layer during sliding. The confinement of the 3D distributed reinforcement phase played a crucial role in preventing the delamination of the tribo-layer on the matrix. This work opens a pathway to the design of novel additively manufactured MMCs with outstanding mechanical properties.
关键词	Selective laser melting Titanium alloys Metallic glass Mechanical properties Wear resistance
资助者	National Key R&D Program of China ; National Nature Science Foundation of China ; Hubei Provincial Natural Science Foundation of China
DOI	10.1016/j.addma.2018.12.006
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2016YFB1100101] ; National Nature Science Foundation of China[51531003] ; National Nature Science Foundation of China[51771077] ; Hubei Provincial Natural Science Foundation of China[2018CFA003]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Manufacturing ; Materials Science, Multidisciplinary
WOS记录号	WOS:000456378800047
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：39[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/321006/131372
专题	中国科学院金属研究所
通讯作者	Zhang, Cheng; Liu, Lin
作者单位	1.Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China 2.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Hubei, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Shen, Xiao-Jun,Zhang, Cheng,Yang, Yan-Ge,et al. On the microstructure, mechanical properties and wear resistance of an additively manufactured Ti64/metallic glass composite[J]. ADDITIVE MANUFACTURING,2019,25:499-510.
APA	Shen, Xiao-Jun,Zhang, Cheng,Yang, Yan-Ge,&Liu, Lin.(2019).On the microstructure, mechanical properties and wear resistance of an additively manufactured Ti64/metallic glass composite.ADDITIVE MANUFACTURING,25,499-510.
MLA	Shen, Xiao-Jun,et al."On the microstructure, mechanical properties and wear resistance of an additively manufactured Ti64/metallic glass composite".ADDITIVE MANUFACTURING 25(2019):499-510.