Abstract Titanium matrix composites have been attracting great interest from aerospace industry due to favorable properties like thermal stability, high specific strength, corrosion, and wear resistance. Optimal relation between mechanical properties demands complex processing routes and, in this context, the effects of a single-step processing route on microstructure and mechanical properties of β titanium matrix composites was placed on focus in this study. The commercial TIMETAL Beta 21S alloy and its modification with the addition of B4C were developed, allowing in-situ formation of TiB and TiC particles in a β matrix. The composites presented highest values of mechanical strength and hardness, and the addition of 3% of B4C provided a significant reduction in grain size, and compressive yield strength and ultimate compressive strength values of 1205 MPa and 1636 MPa, respectively, with a maximum deformation of 20.5%. An orientation relationship investigation provided information about some unconventional relation between the present phases.

中文翻译：

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用于开发具有原位 TiB 和 TiC 增强的 β 钛复合材料的单步热处理

摘要 钛基复合材料由于具有良好的热稳定性、高比强度、耐腐蚀和耐磨性等优点，引起了航空航天工业的极大兴趣。力学性能之间的最佳关系需要复杂的加工路线，在这种情况下，单步加工路线对 β 钛基复合材料的微观结构和力学性能的影响是本研究的重点。开发了商业 TIMETAL Beta 21S 合金及其添加 B4C 的改性，允许在 β 基体中原位形成 TiB 和 TiC 颗粒。复合材料具有最高的机械强度和硬度值，添加 3% 的 B4C 显着减小了晶粒尺寸，抗压屈服强度和极限抗压强度值分别为 1205 MPa 和 1636 MPa，最大变形量为 20.5%。一项定向关系调查提供了有关当前阶段之间一些非常规关系的信息。