Microstructure and mechanical properties of laser additive manufactured novel titanium alloy after heat treatment
نویسندگان
چکیده
A novel ?+? titanium alloy with multi-alloying addition was designed based on the cluster formula 12[Al-Ti12](AlTi2)+5[Al-Ti14](AlV12Mo06Nb02) which derived from Ti-6Al-4V. The nominal composition of this determined as Ti-6.83Al-2.28V-2.14Mo-0.69Nb-6.79Zr. In study, and Ti-6Al-4V samples were prepared by laser additive manufacturing. microstructure, micro-hardness, room/high temperature tensile properties as-deposited investigated. Compared to Ti-6Al-4V, has much higher room high (600 °C) strengths, are 1,427.5 MPa 642.2 MPa, respectively; however, it a lower elongation (3.2%) at because finer microstructure. To improve alloy, heat treatment used. After solution 960 °C or 970 for 1 h followed air cooling aging 550 4 cooling, unique bi-modal microstructure contains crab-like primary ? residual ? phase is obtained, improving compression 80.9% compared samples. can be used high-temperature high-strength candidate
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ژورنال
عنوان ژورنال: China Foundry
سال: 2021
ISSN: ['1672-6421', '2365-9459']
DOI: https://doi.org/10.1007/s41230-021-1089-4