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Get Free AccessPowder bed fusion (PBF) additive manufacturing has the potential for significant impact on the construction industry due to its ability to produce complex and free-form components with high-precision. However, the size of components is limited by the build envelope of PBF machines. Laser welding offers a means of joining small individual PBF parts together to create larger-scale parts. This paper investigates the microstructure and material properties of stainless steel coupons with and without laser-welded joints, in conjunction with the structural performance of stainless steel circular hollow sections (CHS) at the cross-sectional level, with all specimens printed by PBF. The PBF base material exhibited a typical cellular microstructure, while the weld material consisted of equiaxed, columnar and cellular dendrite microstructures. The proof strengths of the weld were lower than those of the base metal, and the strengths of the PBF base metal were dependent on the build direction – the vertically built coupons showed lower proof strengths than the horizontal coupons. The axial resistances of the PBF CHS are safely predicted by the EN 1993-1-4 design provisions and the deformation-based continuous strength method (CSM).
Lei Wang, Haozhe Liu, H Dong, X Liu High, W Wang, A Sharhan, Erdeng Du, Xinyu Hu, Zhijun Zhou, Jidong Lu, Yang Tang, A. Abdelrahman, M Ghannam, S Lotfy, Mohammad AlHamaydeh, Xi Xiong, F Nkuichou, Ting Wang, M Ma, K Du Corrosion, N Wang, Jian Hua, Xin Xue, Qindan Huang, F Wang, Haidong Huang, Lingbao Ren, Ke Chen, X Li, Bo Yang, Ming Zhang, Weiwei Liu, Z Lei, Dangxiao Wang, Jiabin Wang, Lijun Zhou, Xueming Shu, Cross-Sections Zhang, Leroy Gardner, C Buchanan, Dave Chan, Wei Sun, Yujiang Wang, Fang Lu, Bin Luo, Zeyu Zhang, D Ye, Guoqiang Li, Rui Li, Zhigao Yang, Shell Reticulated, Yiyi Chen, Fang Huang, X Zhang, Zhiping Yu, Rui Guo, Yang Du, L Zhong, Chengyun Miao, Y. Ping, Cheng Fang, Yiyi Chen, Yi Ding, Mehmet Soy, Min Tang, Zhang We, Xiaocong Yang, Fen Lin, Chao Liu, Ruizhi Zhang (2022). TESTING OF ADDITIVELY MANUFACTURED STAINLESS STEEL MATERIAL AND CROSS-SECTIONS. , DOI: https://doi.org/10.18057/icass2020.p.175.
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Type
Report
Year
2022
Authors
70
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.18057/icass2020.p.175
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