Research on Directional Forming Process of 316L Alloy Laser

Abstract This paper uses 316L stainless steel as the powder and matrix material for laser cladding. The scanning speed is 8.18mm/s, the powder feeding rate is 1.15r/min, and the laser melting is performed with a constant laser power (1002.74W) and a layer-by-layer reduction. The laser cladding exper...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1798; no. 1; p. 12049
Main Authors HaoLu, HuLi, LidaZhu, Su, Jikang
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.02.2021
Subjects
Austenitic stainless steels
Crystals
Laser beam cladding
Laser beam melting
Lasers
Machining
Multilayers
Physics
Process parameters
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Summary:Abstract This paper uses 316L stainless steel as the powder and matrix material for laser cladding. The scanning speed is 8.18mm/s, the powder feeding rate is 1.15r/min, and the laser melting is performed with a constant laser power (1002.74W) and a layer-by-layer reduction. The laser cladding experiment of single channel multilayer straight thin-walled parts is carried out under the above machining parameters. Lower power laser cladding layer by layer can effectively control the molten pool volume and improve the forming quality and precision of straight thin-walled parts. And it can be observed that the microstructure from bottom to top changes from columnar crystals to equiaxed crystals and then to columnar crystals.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1798/1/012049