Microstructures, Thermal and Mechanical Properties of Pure Tungsten-A Comparison Between Selective Laser Melting and Hot Rolling

doi:10.1186/s10033-022-00712-5

	Microstructures, Thermal and Mechanical Properties of Pure Tungsten-A Comparison Between Selective Laser Melting and Hot Rolling
	Wang, Chong 1; Chen, Daobing 1; Zhou, Yan 2; Xie, Zhuoming 3; Fang, Qianfeng 3; Wen, Shifeng 1; Yan, Chunze 1
刊名	CHINESE JOURNAL OF MECHANICAL ENGINEERING
	2022-12-01
卷号	35
关键词	Tungsten (W) Selective laser melting (SLM) Hot rolling Microstructure Thermal conductivity Mechanical property
ISSN号	1000-9345
DOI	10.1186/s10033-022-00712-5
通讯作者	Zhou, Yan(zhouyan@cug.edu.cn) ; Wen, Shifeng(roya_wen@hust.edu.cn)
英文摘要	A comparative study on the influence of different manufacturing methods (selective laser melting and hot rolling) on the microstructure, mechanical and thermal behaviours of tungsten (W) was presented for the first time. The results indicated that the selective laser melting (SLM) W exhibited a finer grain sizes, a lower strength ductility, hardness and thermal conductivity compared to hot-rolled W. The main reason for this result was that the laser underwent rapid heating and cooling when it was used to melt W powder with high energy density, resulting in large internal stress in the sample after manufacturing. Subsequently, the internal stress was released, leading to the generation of micro-cracks at the grain boundaries, thereby affecting the performance of SLM W samples. In addition, the higher fraction of high-angle grain boundaries (HAGBs) of SLM W was found to be the key factor for intrinsic brittleness. Because the HAGBs are the preferred crack paths, which could promote crack propagation and decrease fracture energy.
资助项目	National Natural Science Foundation of China[U1808216] ; Hubei Provincial Natural Science Foundation of China[2020CFB667] ; Hubei Provincial Key Research and Development Program of China[2020BAB045] ; Wuhan Second Ship Design and Research Institute[YT19201903]
WOS关键词	TENSILE PROPERTIES ; SHOCK RESISTANCE ; BEHAVIOR ; PHASE ; DENSIFICATION ; DISLOCATION ; SUPPRESSION ; PERFORMANCE ; COMPOSITE ; EVOLUTION
WOS研究方向	Engineering
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000790790200004
资助机构	National Natural Science Foundation of China ; Hubei Provincial Natural Science Foundation of China ; Hubei Provincial Key Research and Development Program of China ; Wuhan Second Ship Design and Research Institute
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131533]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhou, Yan; Wen, Shifeng
作者单位	1.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mold Technol, Wuhan 430074, Peoples R China 2.China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China 3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chong,Chen, Daobing,Zhou, Yan,et al. Microstructures, Thermal and Mechanical Properties of Pure Tungsten-A Comparison Between Selective Laser Melting and Hot Rolling[J]. CHINESE JOURNAL OF MECHANICAL ENGINEERING,2022,35.
APA	Wang, Chong.,Chen, Daobing.,Zhou, Yan.,Xie, Zhuoming.,Fang, Qianfeng.,...&Yan, Chunze.(2022).Microstructures, Thermal and Mechanical Properties of Pure Tungsten-A Comparison Between Selective Laser Melting and Hot Rolling.CHINESE JOURNAL OF MECHANICAL ENGINEERING,35.
MLA	Wang, Chong,et al."Microstructures, Thermal and Mechanical Properties of Pure Tungsten-A Comparison Between Selective Laser Melting and Hot Rolling".CHINESE JOURNAL OF MECHANICAL ENGINEERING 35(2022).