Investigation on Relationship between Defects and Paramaters for Titanium Alloy Fabricated by Selective Laser Melting

IMR OpenIR

	Investigation on Relationship between Defects and Paramaters for Titanium Alloy Fabricated by Selective Laser Melting
	Zhao Chunling 1; Li Wei 1; Wang Qiang 1; Wang Yujia 2; Zhao Yu 1; Di Shixiong 1; Ren Dechun 2; Ji Haibin 2
通讯作者	Zhao Chunling(capi@608.163.net)
	2021-08-01
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	50 期号:8 页码:2841-2849
摘要	Selective laser melting (SLM) technology can realize the direct fabrication of products with complex shape, high dimensional accuracy, and excellent mechanical properties. However, improper selection of fabrication parameters of SLM will introduce defects in the products. For the problem of defects, this investigation studied the influence of the two main fabrication parameters, laser power and scanning speed, on the type, size and quantity of internal defects in fabricated titanium alloy, and explored the evolution of defects with fabrication parameters. The results show that there are mainly irregular shape and regular spherical shape defects in the titanium alloy fabricated by SLM. The area with low laser power (<= 130 W) and high scanning speed (>= 900 mm/s) is mainly irregular shape defects. Insufficient energy is the main reason for the formation of this type defect. The area with high laser power (>= 190 W), low scanning speed (<= 600 mm/s) is mainly regular spherical shape defects. The gasification of alloying elements caused by excessive energy is the main reason for the formation of this type defect. With the increasing of laser energy density, the SLM fabricated titanium alloy processing map was drawn according to the evolution law of defects. The evolution of defects presents three stages for the area of irregular shape defects gradually decreasing, micro-scale irregular defects to micro-scale regular spherical defects, and regular spherical defects gradually growing up.
关键词	selective laser melting defect laser power scanning speed laser energy density
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000695646700025
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：3[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/321006/166924
专题	中国科学院金属研究所
通讯作者	Zhao Chunling
作者单位	1.AECC Hunan Aviat Powerplant Res Inst, Zhuzhou 412002, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhao Chunling,Li Wei,Wang Qiang,et al. Investigation on Relationship between Defects and Paramaters for Titanium Alloy Fabricated by Selective Laser Melting[J]. RARE METAL MATERIALS AND ENGINEERING,2021,50(8):2841-2849.
APA	Zhao Chunling.,Li Wei.,Wang Qiang.,Wang Yujia.,Zhao Yu.,...&Ji Haibin.(2021).Investigation on Relationship between Defects and Paramaters for Titanium Alloy Fabricated by Selective Laser Melting.RARE METAL MATERIALS AND ENGINEERING,50(8),2841-2849.
MLA	Zhao Chunling,et al."Investigation on Relationship between Defects and Paramaters for Titanium Alloy Fabricated by Selective Laser Melting".RARE METAL MATERIALS AND ENGINEERING 50.8(2021):2841-2849.