Abstract Ti and its alloys have a high affinity for hydrogen and are typical hydride formers. Ti-hydride are brittle phases which probably cause premature failure of Ti-alloys. Here, we used atom probe tomography and electron microscopy to investigate the hydrogen distribution in a set of specimens of commercially pure Ti, model and commercial Ti-alloys. Although likely partly introduced during specimen preparation with the focused-ion beam, we show formation of Ti-hydrides along α grain boundaries and α/β phase boundaries in commercial pure Ti and α+β binary model alloys. No hydrides are observed in the α phase in alloys with Al addition or quenched-in Mo supersaturation.

中文翻译：

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在原子尺度上表征纯钛和合金钛中的溶质氢和氢化物

摘要 Ti及其合金对氢具有高亲和力，是典型的氢化物形成剂。氢化钛是脆性相，可能会导致钛合金过早失效。在这里，我们使用原子探针断层扫描和电子显微镜来研究一组商业纯钛、模型和商业钛合金样品中的氢分布。尽管可能在使用聚焦离子束的样品制备过程中部分引入，但我们展示了在商业纯 Ti 和 α+β 二元模型合金中沿 α 晶界和 α/β 相界形成的 Ti 氢化物。在添加 Al 或淬火 Mo 过饱和度的合金的 α 相中没有观察到氢化物。