The effect of scanning strategies on the defect distribution and mechanical properties of additive manufactured 316L stainless steel components

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2024-11-10 DOI:10.1016/j.matlet.2024.137703

Haifeng Zhai , Wei Jiang , Haonan Wu , Donghu Li , Yang Wang

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Abstract

The effect of scanning strategies on defect distribution and mechanical properties of additive-manufactured (AM) 316L stainless steel components was investigated. Three scanning strategies (A1-stripe, A2-loop, A3-chessboard) were applied to study the defect characteristics using X-ray microscopy (XRM) and evaluate the resulting mechanical behavior through tensile tests. The results indicate that the chessboard strategy produces fewer, smaller, and more uniform defects, contributing to superior tensile strength and reduced anisotropy. In contrast, the loop strategy results in a higher density of elongated defects near the surface, leading to increased stress concentrations and lower tensile performance. This study provides insights into optimizing scanning strategies to enhance defect control, thereby improving the overall mechanical properties of 316L stainless steel in additive manufacturing. These findings are instrumental in advancing the process design for defect mitigation and structural integrity in AM components.

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扫描策略对添加剂制造的 316L 不锈钢部件的缺陷分布和机械性能的影响

研究了扫描策略对添加剂制造（AM）316L 不锈钢部件的缺陷分布和机械性能的影响。采用三种扫描策略（A1-条纹、A2-环形、A3-棋盘），使用 X 射线显微镜（XRM）研究缺陷特征，并通过拉伸试验评估由此产生的机械性能。结果表明，棋盘式策略产生的缺陷更少、更小、更均匀，因此抗拉强度更高，各向异性更小。相比之下，环形策略会在表面附近产生更高密度的细长缺陷，导致应力集中增加，拉伸性能降低。这项研究为优化扫描策略以加强缺陷控制，从而改善增材制造中 316L 不锈钢的整体机械性能提供了启示。这些发现有助于推进工艺设计，以减少增材制造部件中的缺陷和结构完整性。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive