工艺参数对L-DED AISI 316L不锈钢尺寸及力学性能的影响

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Korean Journal of Metals and Materials Pub Date : 2023-10-05 DOI:10.3365/kjmm.2023.61.10.760

Jiyoung Park, Hyunji Nam, Qing-Ye Jin, Wookjin Lee

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引用次数: 0

摘要

本研究以aisi316l不锈钢为研究对象，在不同的激光扫描速度和激光功率下，采用L-DED工艺制备aisi316l不锈钢，分析体积能量密度(VED)对其最终形状、微观结构和力学性能的影响。在不同的切削速度条件下发现，当粉末进给量足够时，较高的切削速度可以减少熔合不足的形成，并且切削速度与粉末进给量的比例影响尺寸精度。此外，在相同的激光扫描速度下，激光扫描速度对L-DED加工的AISI 316L的组织和力学性能没有显著影响，表明凝固速率和凝固细胞尺寸主要由激光扫描速度决定。

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Effects of Process Parameters on the Dimensions and Mechanical Properties of L-DED AISI 316L Stainless Steel

In this study, AISI 316L stainless steels were manufactured by the L-DED process with various laser scanning speeds and laser powers, in order to analyze how volumetric energy density (VED) can affect their final shape, microstructure and mechanical properties. Under various VED conditions, it was found that a higher VED decreases the formation of lack of fusion when the powder feed rate is adequate, and the ratio of VED and powder feed rate affect the dimensional accuracy. Furthermore, the microstructure and mechanical properties of the L-DED processed AISI 316L were not significantly influenced by the laser scanning speed when the same VED was used, indicating that the solidification rate and solidification cell size are mainly determined by the VED.

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来源期刊

Korean Journal of Metals and Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

1.80

自引率

58.30%

发文量

100

审稿时长

4-8 weeks

期刊介绍： The Korean Journal of Metals and Materials is a representative Korean-language journal of the Korean Institute of Metals and Materials (KIM); it publishes domestic and foreign academic papers related to metals and materials, in abroad range of fields from metals and materials to nano-materials, biomaterials, functional materials, energy materials, and new materials, and its official ISO designation is Korean J. Met. Mater.