Abstract In this study, the crystallographic orientation relationship between bcc precipitates and a Ti5Si3 matrix in Mo–50Ti–14Si–6C–6B (at.%) alloy was established. The alloy microstructure consisted of the bcc solid solution, Ti5Si3, Mo5SiB2, and TiC phases. The metal-rich Ti5Si3 phase was formed during a solidification stage, followed by the precipitation of the bcc phase within the Ti5Si3 matrix in the subsequent annealing process. The orientation relationship between the two phases was described by the expression: 112 bcc / / 01 1 ‾ 0 Ti 5 Si 3 and 3 ‾ 11 bcc / / 0001 Ti 5 Si 3 . The formation of a low-energy interface between the two phases was explained by the edge-to-edge matching of their corresponding lattice planes at the faceted interface.

中文翻译：

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Mo-Si-B-Ti-C五元合金中bcc析出物与Ti5Si3基体的取向关系

摘要 在这项研究中，建立了 Mo-50Ti-14Si-6C-6B (at.%) 合金中 bcc 析出物和 Ti5Si3 基体之间的晶体取向关系。合金显微组织由 bcc 固溶体、Ti5Si3、Mo5SiB2 和 TiC 相组成。在凝固阶段形成富含金属的 Ti5Si3 相，随后在随后的退火过程中在 Ti5Si3 基体中析出 bcc 相。两相之间的取向关系由以下表达式描述：112 bcc // 01 1 ‾ 0 Ti 5 Si 3 和 3 ‾ 11 bcc // 0001 Ti 5 Si 3 。两相之间低能界面的形成是通过在刻面界面处相应晶格平面的边对边匹配来解释的。