Abstract
Ti-6A1-4V alloy and Ti-6Al-2Sn-4Zr-2Mo/10TiB particulate composites were synthesized using a hlended elemental powder metallurgy processing route. Microstructures and mechanical properties, such as tensile, creep, Young’s modulus and high-cycle fatigue-strength were evaluated. Special attention was paid to improve the high-cycle fatigue-strength of these two materials by modifying the matrix microstructure or process innovation. The fatiguecrackinitiation mechanism, relationship between α-phase morphology and high-cycle fatigue-strength, and other factors contributing to the increase in fatigue strength were analyzed.
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