Oxygen Embrittlement Kinetics at 500–600 °C of the Ti–6Al–4V Alloy Fabricated by Laser and Electron Powder Bed Fusion

IF 2.1 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Oxidation of Metals Pub Date : 2024-05-24 DOI:10.1007/s11085-024-10249-8

Antoine Casadebaigt, Daniel Monceau, Jonathan Hugues

引用次数: 0

Abstract

Ti–6Al–4V alloys manufactured by laser or electron powder bed fusion (L-PBF and E-PBF) with or without hipping treatment have different microstructures from foundry alloys. Their oxidation kinetics at high temperatures between 500 and 600 °C for durations up to 2,000 h were compared. The effect of oxidation on their room temperature tensile embrittlement was quantified. It was shown that the growth kinetics of the brittle fracture zone, of the zone with cracks at 1% strain, and of the oxygen diffusion zone were perfectly correlated. Therefore, the embrittlement was confirmed to be due to oxygen ingress below the oxide scale and the kinetics were independent of the microstructure.

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激光和电子粉末床熔融法制造的 Ti-6Al-4V 合金在 500-600 °C 时的氧脆化动力学特性

通过激光或电子粉末床熔化（L-PBF 和 E-PBF）制造的钛-6Al-4V合金，无论是否经过热处理，都具有不同于铸造合金的微观结构。比较了它们在 500 至 600 °C 高温下持续 2,000 小时的氧化动力学。对氧化对室温拉伸脆性的影响进行了量化。结果表明，脆性断裂区、1% 应变裂纹区和氧扩散区的生长动力学完全相关。因此，脆化被证实是由于氧化层以下的氧气侵入造成的，其动力学与微观结构无关。

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

Oxidation of Metals 工程技术-冶金工程

CiteScore

5.10

自引率

9.10%

发文量

审稿时长

2.2 months

期刊介绍： Oxidation of Metals is the premier source for the rapid dissemination of current research on all aspects of the science of gas-solid reactions at temperatures greater than about 400˚C, with primary focus on the high-temperature corrosion of bulk and coated systems. This authoritative bi-monthly publishes original scientific papers on kinetics, mechanisms, studies of scales from structural and morphological viewpoints, transport properties in scales, phase-boundary reactions, and much more. Articles may discuss both theoretical and experimental work related to gas-solid reactions at the surface or near-surface of a material exposed to elevated temperatures, including reactions with oxygen, nitrogen, sulfur, carbon and halogens. In addition, Oxidation of Metals publishes the results of frontier research concerned with deposit-induced attack. Review papers and short technical notes are encouraged.

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