Influence of heat treatment on microstructure, mechanical and corrosion behavior of WE43 alloy fabricated by laser-beam powder bed fusion

IF 16.1 1区工程技术 Q1 ENGINEERING, MANUFACTURING

International Journal of Extreme Manufacturing Pub Date : 2023-10-17 DOI:10.1088/2631-7990/acfad5

chenrong ling, qiang li, zhe zhang, Youwen Yang, wenhao zhou, wenlong chen, zhi dong, chunrong pan, cijun shuai

引用次数: 4

Abstract

Highlights WE43 parts with favorable forming quality are fabricated by laser-beam powder bed fusion and the interaction between laser beam and powder is revealed. After suitable heat treatment, the anisotropic microstructure is eliminated, with nano-scaled Mg 24 Y 5 particles homogeneously precipitated. The yield strength and ultimate tensile strength are improved to (250.2 ± 3.5) MPa and (312 ± 3.7) MPa, respectively, while the elongation still maintains at high level of 15.2%. Homogenized microstructure inhibits the micro galvanic corrosion and promotes the development of passivation film, thus decreasing the degradation rate by an order of magnitude. The porous WE43 scaffolds offer a favorable environment for cell growth.

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热处理对激光粉末床熔合WE43合金组织、力学和腐蚀行为的影响

采用激光粉末床熔接技术制备了具有良好成形质量的WE43零件，并揭示了激光与粉末的相互作用。经过适当热处理后，各向异性组织被消除，纳米级mg24y5颗粒均匀析出。屈服强度和极限抗拉强度分别提高到(250.2±3.5)MPa和(312±3.7)MPa，伸长率仍保持在15.2%的较高水平。均匀化的微观结构抑制了微电偶腐蚀，促进了钝化膜的形成，从而使降解速率降低了一个数量级。多孔WE43支架为细胞生长提供了良好的环境。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Extreme Manufacturing Engineering-Industrial and Manufacturing Engineering

CiteScore

17.70

自引率

6.10%

发文量

审稿时长

12 weeks

期刊介绍： The International Journal of Extreme Manufacturing (IJEM) focuses on publishing original articles and reviews related to the science and technology of manufacturing functional devices and systems with extreme dimensions and/or extreme functionalities. The journal covers a wide range of topics, from fundamental science to cutting-edge technologies that push the boundaries of currently known theories, methods, scales, environments, and performance. Extreme manufacturing encompasses various aspects such as manufacturing with extremely high energy density, ultrahigh precision, extremely small spatial and temporal scales, extremely intensive fields, and giant systems with extreme complexity and several factors. It encompasses multiple disciplines, including machinery, materials, optics, physics, chemistry, mechanics, and mathematics. The journal is interested in theories, processes, metrology, characterization, equipment, conditions, and system integration in extreme manufacturing. Additionally, it covers materials, structures, and devices with extreme functionalities.