扫描速度引起的表面粗糙度变化及其对激光粉末床熔合IN718耐蚀性的影响

IF 2 Q3 ENGINEERING, MANUFACTURING

Manufacturing Letters Pub Date : 2025-08-01 DOI:10.1016/j.mfglet.2025.06.090

Bo Zhao , Kateland Hutt , Zilong Zhao , Pai Wang , Hitomi Yamaguchi , Shuaihang Pan

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引用次数: 0

摘要

研究了扫描速度对激光粉末床熔敷（LPBF）制备的IN718表面粗糙度的影响及其对耐蚀性的影响。采用760 mm/s、800 mm/s和840 mm/s三种扫描速度，分析了表面粗糙度、显微硬度和电化学性能。结果表明，获得优异力学性能的最佳扫描速度与最大化lpbf制备合金耐腐蚀性能所需的最佳扫描速度之间存在显著差异。更具体地说，本研究强调了扫描速度对LPBF IN718腐蚀行为的关键作用，为通过优化LPBF制造材料的打印参数来实现机械性能和耐腐蚀性的同时增强提供了实践指导和见解。

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Scanning speed-induced surface roughness change and its impact on the corrosion resistance of IN718 fabricated by laser powder bed fusion

This study investigates the influence of scanning speed on surface roughness and its impact on the corrosion resistance of IN718 fabricated using Laser Powder Bed Fusion (LPBF). Three scanning speeds (760 mm/s, 800 mm/s, and 840 mm/s) were applied, and the surface roughness, microhardness, and electrochemical properties were analyzed. The results reveal a significant discrepancy between the optimal scanning speed for achieving superior mechanical properties and that required for maximizing the LPBF-fabricated alloy’s corrosion resistance performance. More specifically, this study highlights the critical role of scanning speed on the corrosion behavior of LPBF IN718, providing practical guidance and insights for achieving the simultaneous enhancement of both mechanical properties and corrosion resistance by printing parameter optimization in LPBF-fabricated materials.

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