Laser-CMT (Cold Metal Transfer) arc hybrid additive manufacturing (LHAM) of 316L austenitic stainless steel (316SS) was studied. Surface roughness (R) and the minimum processing margin (dmin) of deposited thin-wall were calculated by the data measured via laser displacement sensor. Microstructure and fracture surface were observed by optical microscope and scanning electron microscope. The scanning speed of LHAM could be increased to 1.2 m/min, 3 times higher than that of wire arc additive manufacturing (WAAM). The R and dmin of LHAMed 316SS were reduced to 40% and 60% of the WAAM, respectively. The microstructure of LHAMed 316SS was composed of columnar or equiaxed grains, which were characterized by δ-ferrite and austenite. The tensile strength of LHAMed sample was higher, but the elongation is lower than that of WAAMed sample because of the formation of the porosity.
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International Congress on Applications of Lasers & Electro-Optics
October 14–18, 2018
Orlando, FL, USA
ISBN:
978-1-940168-14-2
PROCEEDINGS PAPER
Preliminary study on laser-arc hybrid additive manufacturing of austenite stainless steel
Mengcheng Gong;
Mengcheng Gong
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST)
, Wuhan 430074, China
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Ming Gao;
Ming Gao
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST)
, Wuhan 430074, China
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Xiaoyan Zeng
Xiaoyan Zeng
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST)
, Wuhan 430074, China
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Published Online:
October 01 2017
Citation
Mengcheng Gong, Ming Gao, Xiaoyan Zeng; October 14–18, 2018. "Preliminary study on laser-arc hybrid additive manufacturing of austenite stainless steel." Proceedings of the International Congress on Applications of Lasers & Electro-Optics. ICALEO® 2017: 36th International Congress on Applications of Lasers & Electro-Optics. Orlando, FL, USA. (pp. 1103). ASME. https://doi.org/10.2351/1.5138140
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