| On the microstructure, mechanical properties and wear resistance of an additively manufactured Ti64/metallic glass composite | |
| Shen, Xiao-Jun1,2; Zhang, Cheng1,2; Yang, Yan-Ge3; Liu, Lin1,2 | |
| Corresponding Author | Zhang, Cheng(czhang@hust.edu.cn) ; Liu, Lin(lliu2000@mail.hust.edu.cn) |
| 2019 | |
| Source Publication | ADDITIVE MANUFACTURING
 |
| ISSN | 2214-8604 |
| Volume | 25Pages:499-510 |
| Abstract | 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. |
| Keyword | Selective laser melting Titanium alloys Metallic glass Mechanical properties Wear resistance |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Manufacturing ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000456378800047 |
| Publisher | ELSEVIER SCIENCE BV |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/131372 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Cheng; Liu, Lin |
| Affiliation | 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 |
| Recommended Citation 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. |
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