扫描策略对快速成型零件微观结构和承重特性的影响

IF 3.3 Q2 ENGINEERING, MANUFACTURING
S. S. Sajin Jose, Santosh Kr. Mishra, Ram Krishna Upadhyay
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引用次数: 0

摘要

近年来,快速成型制造技术得到了长足发展,为汽车和航空航天等行业带来了革命性的变化。尽管增材制造可用于制造复杂的几何形状并减少材料消耗,但仍迫切需要提高制造零件的机械性能,以拓宽其工业应用领域。在这项工作中,AISI 316L 不锈钢被用于使用三种不同的增材制造激光粉末床熔融(LPBF)技术策略(即连续、交替和岛式)制造零件。本研究旨在确定优化晶粒取向的方法,以及在载荷作用下为材料提供的压实支撑,这些因素会影响制造零件的摩擦和磨损性能。通过测量摩擦和磨损特性来评估承载能力。此外,还对磨损斑块轨迹进行了研究,以确定表面界面的物理机制,从而实现对载荷的平滑过渡。利用电子反向散射衍射(EBSD)图比较了不同策略下的晶粒取向,还评估了表面粗糙度对滑动行为的影响。结果表明,岛式扫描策略在承载应用中性能最佳,在快速成型零件中表现出优异的晶粒取向和硬度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Scanning Strategy on the Microstructure and Load-Bearing Characteristics of Additive Manufactured Parts
Additive manufacturing has witnessed significant growth in recent years, revolutionizing the automotive and aerospace industries amongst others. Despite the use of additive manufacturing for creating complex geometries and reducing material consumption, there is a critical need to enhance the mechanical properties of manufactured parts to broaden their industrial applications. In this work, AISI 316L stainless steel is used to fabricate parts using three different strategies of the additively manufactured Laser Powder Bed Fusion (LPBF) technique, i.e., continuous, alternate, and island. This study aims to identify methods to optimize grain orientation and compaction support provided to the material under load, which influence the frictional and wear properties of the manufactured parts. The load-bearing capacity is evaluated by measuring the frictional and wear properties. The wear patch track is also examined to establish the physical mechanisms at the surface interface that lead to the smooth transition in response to the load. Grain orientation is compared across different strategies using Electron Backscatter Diffraction (EBSD) maps, and the influence of surface roughness on sliding behavior is also evaluated. The results demonstrate that the island scanning strategy yields the best performance for load-bearing applications, exhibiting superior grain orientation and hardness in the additively manufactured parts.
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来源期刊
Journal of Manufacturing and Materials Processing
Journal of Manufacturing and Materials Processing Engineering-Industrial and Manufacturing Engineering
CiteScore
5.10
自引率
6.20%
发文量
129
审稿时长
11 weeks
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