Laser metal deposition (LMD) with wire as the filler material has demonstrated to be a potential method in addictive manufacturing due to its higher material deposition efficiency, improved surface quality, reduced material wastage and cleaner process environment without metal dust pollution. In this study, single beads samples and block samples of 316L stainless wire were successfully deposited on the surface of 316L stainless steel under optimized depositing conditions using a YLR-4000 S2 CW Fiber Laser, a Fronius MAG arc welding machine and an ABB industrial robot. The macro morphologies, geometric characteristics and microstructures were examined. The influence of process parameters to macro morphologies and geometric characteristics of different samples were carefully studied. A 5*5 block sample was finally deposited with appropriate parameters based on the single bead experiments. The results showed that satisfied single bead samples with smooth surface and high aspect ratio (height-width ratio) can be deposited under appropriate process conditions and parameters during the stable deposit process. Uniform structures of fine equiaxed austenite grains with good metallurgical bonding to the substrate were also obtained. Uniform bond-like microstructures of block samples was also obtained and investigated. All these results will provide guidance for further study of laser metal-wire deposition with large structures.
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ICALEO 2017: 36th International Congress on Applications of Lasers & Electro-Optics
October 22–26, 2017
Atlanta, Georgia, USA
ISBN:
978-1-940168-14-2
PROCEEDINGS PAPER
Laser metal deposition with 316L stainless wire: Macro morphologies and microstructures
Xiang Xu;
Xiang Xu
1
Huazhong University of Science and Technology
, WuHan City, Hubei Province, China
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Gaoyang Mi;
Gaoyang Mi
1
Huazhong University of Science and Technology
, WuHan City, Hubei Province, China
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Chunming Wang
Chunming Wang
1
Huazhong University of Science and Technology
, WuHan City, Hubei Province, China
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Published Online:
October 01 2017
Citation
Xiang Xu, Gaoyang Mi, Chunming Wang; October 22–26, 2017. "Laser metal deposition with 316L stainless wire: Macro morphologies and microstructures." Proceedings of the ICALEO 2017: 36th International Congress on Applications of Lasers & Electro-Optics. ICALEO 2017: 36th International Congress on Applications of Lasers & Electro-Optics. Atlanta, Georgia, USA. (pp. 503). ASME. https://doi.org/10.2351/1.5138148
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