Abstract Reactive metals including titanium readily oxidise and should be protected from the atmosphere during Additive Manufacturing processes. This work explores the sensitivity of Ti-6Al-4V components to oxidation contamination during out of chamber Wire + Arc Additive Manufacturing when using inert gas trailing shields. Five Ti-6Al-4V components were produced with varying argon trailing shield configurations that range from ideal inert gas shielding (resulting in no surface contamination) through to very poor inert gas shielding that results in substantial surface oxidation. Despite significant changes in the degree of surface oxide contamination between each component, the overall increase in oxygen concentration in the bulk alloys was minimal and had negligible influence on the tensile strength and ductility.

中文翻译：

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Ti-6Al-4V 组件在腔外焊丝 + 电弧增材制造过程中对氧化的敏感性

摘要 包括钛在内的活性金属容易氧化，因此在增材制造过程中应避免接触大气。这项工作探讨了使用惰性气体尾随屏蔽时，Ti-6Al-4V 组件在室外线 + 电弧增材制造过程中对氧化污染的敏感性。五个 Ti-6Al-4V 组件采用不同的氩气尾随屏蔽配置生产，范围从理想的惰性气体屏蔽（导致无表面污染）到非常差的惰性气体屏蔽，导致大量表面氧化。尽管每个组件之间的表面氧化物污染程度发生了显着变化，但块状合金中氧浓度的总体增加很小，并且对拉伸强度和延展性的影响可以忽略不计。