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

doi:10.1186/s10033-022-00712-5

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	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,Zhuoming3 ; Fang,Qianfeng3 ; Wen,Shifeng 1; Yan,Chunze 1
	2022-05-04
发表期刊	Chinese Journal of Mechanical Engineering
ISSN	1000-9345
通讯作者	Zhou,Yan(zhouyan@cug.edu.cn) ; Wen,Shifeng(roya_wen@hust.edu.cn)
摘要	AbstractA 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.
关键词	Tungsten (W) Selective laser melting (SLM) Hot rolling Microstructure Thermal conductivity Mechanical property
DOI	10.1186/s10033-022-00712-5
语种	英语
WOS记录号	BMC:10.1186/s10033-022-00712-5
出版者	Springer Nature Singapore
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/128732
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 University of Science and Technology; State Key Laboratory of Material Processing and Die & Mold Technology, School of Materials Science and Engineering 2.China University of Geosciences; Faculty of Engineering 3.Chinese Academy of Sciences; Key Laboratory of Materials Physics, Institute of Solid State Physics
推荐引用方式 GB/T 7714	Wang,Chong,Chen,Daobing,Zhou,Yan,等. 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).