Achieving ultra-high strength rapidly in Ti-3Al-8V-6Cr-4Mo-4Zr alloy processed by directed energy deposition

doi:10.1016/j.matdes.2022.111325

IMR OpenIR

	Achieving ultra-high strength rapidly in Ti-3Al-8V-6Cr-4Mo-4Zr alloy processed by directed energy deposition
	Zhang, Kun 1,2; Kan, Wen Hao 1,2; Zhu, Yuman 1,2; Lim, Samuel Chao Voon 1,2; Gao, Xiang 1,2; Sit, Chun Kit 1,2; Bai, Chunguang 3; Huang, Aijun 1,2
通讯作者	Kan, Wen Hao(wenhao.kan@monash.edu) ; Huang, Aijun(aijun.huang@monash.edu)
	2022-12-01
发表期刊	MATERIALS & DESIGN
ISSN	0264-1275
卷号	224 页码:12
摘要	This work investigates the viability of fabricating Ti-3Al-8V-6Cr-4Mo-4Zr (Beta-C (TM)) using laser-based and powder-fed directed energy deposition. To determine an appropriate ageing strategy, heat treatments were conducted at 440 degrees C and 480 degrees C over different periods of time and their effectiveness were determined through hardness testing. After identifying an optimal ageing treatment, tensile properties were investigated on the samples in the as-built and aged conditions. The microstructure, hardness and tensile properties of the as-built sample was found to resemble that of a conventionallymanufactured and solution-treated alloy. However, as compared to conventionally-manufactured Ti3Al-8V-6Cr-4Mo-4Zr subjected to the same ageing temperature, the ageing process was much quicker with the DED-processed alloy because of its high dislocation density. Furthermore, the latter can also achieve much higher strength while also having comparable ductility. To achieve a similar ageing response and tensile behavior, conventionally-manufactured Ti-3Al-8V-6Cr-4Mo-4Zr would require cold-working prior to ageing. Carbon additions were also investigated to further accelerate the ageing response and to refine the beta grain size. While the ageing response was much quicker and a much harder alloy can be produced, the carbon amount added was insufficient for b grain refinement, which resulted in reduced ductility without a change in strength. (c) 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
关键词	Direct energy deposition Titanium Beta-C Tensile properties Ageing
DOI	10.1016/j.matdes.2022.111325
收录类别	SCI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001011341500005
出版者	ELSEVIER SCI LTD
引用统计	被引频次：6[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/321006/178337
专题	中国科学院金属研究所
通讯作者	Kan, Wen Hao; Huang, Aijun
作者单位	1.Monash Univ, Monash Ctr Addit Mfg, 15-17 Normanby Rd, Notting Hill, Vic 3168, Australia 2.Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia 3.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Kun,Kan, Wen Hao,Zhu, Yuman,et al. Achieving ultra-high strength rapidly in Ti-3Al-8V-6Cr-4Mo-4Zr alloy processed by directed energy deposition[J]. MATERIALS & DESIGN,2022,224:12.
APA	Zhang, Kun.,Kan, Wen Hao.,Zhu, Yuman.,Lim, Samuel Chao Voon.,Gao, Xiang.,...&Huang, Aijun.(2022).Achieving ultra-high strength rapidly in Ti-3Al-8V-6Cr-4Mo-4Zr alloy processed by directed energy deposition.MATERIALS & DESIGN,224,12.
MLA	Zhang, Kun,et al."Achieving ultra-high strength rapidly in Ti-3Al-8V-6Cr-4Mo-4Zr alloy processed by directed energy deposition".MATERIALS & DESIGN 224(2022):12.