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首页> 外文期刊>Materials Science and Engineering >Mechanisms of tensile strengthening and oxygen solid solution in single β-phase Ti-35 at.%Ta+O alloys
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Mechanisms of tensile strengthening and oxygen solid solution in single β-phase Ti-35 at.%Ta+O alloys

机译：单β相Ti-35中的拉伸强化和氧固溶体的机理。％TA + O合金

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Single β phase titanium alloys are used for fabricating biomedical devices, and it is desirable to improve the strength of these alloys. In this study, the tensile strength of Ti-35 at.% Ta alloys with a single β phase was improved using oxygen solid solution and the strengthening mechanism was also investigated. The lattice constants of these alloys calculated from X-ray diffraction data increased with an increase in the oxygen content. This result suggests that oxygen atoms formed solutes in the alloys, which was supported by results obtained from first-principles calculations. Microstructural analyses of the alloys indicate that Ti, Ta, and O were homogeneously distributed. Tensile tests were conducted for the alloys, and the 0.2%YS increased with the increase in the O content of the alloy. The increments of 0.2%YS which was determined experimentally correspond well with the theoretically determined trend, and this observation is a result of the effect of the change in grain size and O solid solution. The contribution of the grain refinement was negligibly small compared with that of the O solid solution, and the latter is the major reason for the observed increase in the 0.2%YS of the Ti-35 at.% Ta alloys.
机译：单β相钛合金用于制造生物医学装置，并且希望提高这些合金的强度。在该研究中，使用氧固溶溶液改善了Ti-35的拉伸强度。％Ta合金的单β相改善，还研究了强化机理。根据X射线衍射数据计算的这些合金的晶格常数随着氧含量的增加而增加。该结果表明氧原子在合金中形成的溶质，其通过从第一原理计算获得的结果支持。合金的微观结构分析表明Ti，Ta和O是均匀分布的。对合金进行拉伸试验，随着合金的O含量的增加，0.2％Y增加。在实验确定的0.2％y的增量与理论上确定的趋势实验相当，并且该观察是晶粒尺寸和O固溶体变化的影响的结果。与O固溶体相比，晶粒细化的贡献与O固溶体相比，后者是观察到的Ti-35的0.2％Ys升高的主要原因。％Ta合金。

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