Microstructures and Mechanical Properties of H13 Tool Steel Fabricated by Selective Laser Melting

doi:10.3390/ma15072686

	Microstructures and Mechanical Properties of H13 Tool Steel Fabricated by Selective Laser Melting
	Lei, Fei 1; Wen, Tao 1; Yang, Feipeng 1; Wang, Jianying 1; Fu, Junwei 2; Yang, Hailin 1; Wang, Jiong 1; Ruan, Jianming 1; Ji, Shouxun 3
	2022-04-01
发表期刊	MATERIALS
卷号	15 期号:7 页码:15
通讯作者	Yang, Hailin(y-hailin@csu.edu.cn) ; Wang, Jiong(wangjionga@csu.edu.cn)
摘要	H13 stool steel processed by selective laser melting (SLM) suffered from severe brittleness and scatter distribution of mechanical properties. We optimized the mechanical response of as-SLMed H13 by tailoring the optimisation of process parameters and established the correlation between microstructure and mechanical properties in this work. Microstructures were examined using XRD, SEM, EBSD and TEM. The results showed that the microstructures were predominantly featured by cellular structures and columnar grains, which consisted of lath martensite and retained austenite with numerous nanoscale carbides being distributed at and within sub-grain boundaries. The average size of cellular structure was similar to 500 nm and Cr and Mo element were enriched toward the cell wall of each cellular structure. The as-SLMed H13 offered the yield strength (YS) of 1468 MPa, the ultimate tensile strength (UTS) of 1837 MPa and the fracture strain of 8.48%. The excellent strength-ductility synergy can be attributed to the refined hierarchical microstructures with fine grains, the unique cellular structures and the presence of dislocations. In addition, the enrichment of solute elements along cellular walls and carbides at sub-grain boundaries improve the grain boundary strengthening.
关键词	H13 tool steel selective laser melting microstructure mechanical properties
DOI	10.3390/ma15072686
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2020YFB0311300ZL] ; National Natural Science Foundation of China[52071343]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000780541800001
出版者	MDPI
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/178718
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Yang, Hailin; Wang, Jiong
作者单位	1.Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 3.Brunel Univ London, Brunel Ctr Adv Solidificat Technol BCAST, Uxbridge UB8 3PH, Middx, England
推荐引用方式 GB/T 7714	Lei, Fei,Wen, Tao,Yang, Feipeng,et al. Microstructures and Mechanical Properties of H13 Tool Steel Fabricated by Selective Laser Melting[J]. MATERIALS,2022,15(7):15.
APA	Lei, Fei.,Wen, Tao.,Yang, Feipeng.,Wang, Jianying.,Fu, Junwei.,...&Ji, Shouxun.(2022).Microstructures and Mechanical Properties of H13 Tool Steel Fabricated by Selective Laser Melting.MATERIALS,15(7),15.
MLA	Lei, Fei,et al."Microstructures and Mechanical Properties of H13 Tool Steel Fabricated by Selective Laser Melting".MATERIALS 15.7(2022):15.

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