Study of the Crack and Porosity Regulation of a Non-weldable Ni-Based Superalloy Fabricated by Laser Powder Bed Fusion

doi:10.1007/s11665-024-10362-4

IMR OpenIR

	Study of the Crack and Porosity Regulation of a Non-weldable Ni-Based Superalloy Fabricated by Laser Powder Bed Fusion
	Li, Shuijin 1; Gao, Shuang 1; Zhang, Weiguang 1; Lu, Guoxin 2; Cui, Luqing 3; Li, Linzi 4; Ma, Yinghui 5; Wang, Sai 6
通讯作者	Gao, Shuang(gaoshuang_alloy@163.com) ; Wang, Sai(ws@zhejianglab.com)
	2024-11-18
发表期刊	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN	1059-9495
页码	12
摘要	It is very challenging to prepare non-weldable Ni-based superalloys without defects by laser powder bed fusion (LPBF) technology since they are prone to cracking due to the comparatively high content of Al and Ti. This paper studied the reduction of the crack and porosity of a non-weldable superalloy, IN939 Ni-based alloy, by preheating substrate and refining laser volume energy density of LPBF process. The results showed that the crack density increased with the laser volume energy density increasing; while, the porosity decreased. The range of laser volume energy density suitable for IN939 Ni-based superalloy was very narrow, which was from 37.5 to 58.3 J/mm3 considering the synchronized reduction of crack and porosity. The alloying element segregation and the high residual stress were two essential reasons for forming cracks. Further, the substrate preheating at 180 degrees C inhibited the formation of cracks; and hence, the mechanical property was slightly improved. This study will provide a reference for the preparation of LPBF non-weldable Ni-based superalloys.
关键词	crack finite element modeling laser powder bed fusion non-weldable Ni-based superalloy porosity
资助者	Class III Peak Discipline of Shanghai-Materials Science and Engineering (High-Energy Beam Intelligent Processing and Green Manufacturing)
DOI	10.1007/s11665-024-10362-4
收录类别	SCI
语种	英语
资助项目	Class III Peak Discipline of Shanghai-Materials Science and Engineering (High-Energy Beam Intelligent Processing and Green Manufacturing)
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001357702400001
出版者	SPRINGER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191626
专题	中国科学院金属研究所
通讯作者	Gao, Shuang; Wang, Sai
作者单位	1.Shanghai Univ Engn Sci, Sch Mat Engn, Shanghai 201620, Peoples R China 2.Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China 3.Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 5.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 6.Zhejiang Lab, Hangzhou 311121, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuijin,Gao, Shuang,Zhang, Weiguang,et al. Study of the Crack and Porosity Regulation of a Non-weldable Ni-Based Superalloy Fabricated by Laser Powder Bed Fusion[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2024:12.
APA	Li, Shuijin.,Gao, Shuang.,Zhang, Weiguang.,Lu, Guoxin.,Cui, Luqing.,...&Wang, Sai.(2024).Study of the Crack and Porosity Regulation of a Non-weldable Ni-Based Superalloy Fabricated by Laser Powder Bed Fusion.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,12.
MLA	Li, Shuijin,et al."Study of the Crack and Porosity Regulation of a Non-weldable Ni-Based Superalloy Fabricated by Laser Powder Bed Fusion".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2024):12.