Abstract
Ti-6Al-4V powder compacts were prepared using hot isostatic pressing (HIP), and the effect of powder size on microstructure and fatigue properties of HIPed powder compacts was investigated. The results show that the microstructure of powder compacts is fine and homogeneous. The volume fraction of equiaxed α phase in the powder compact decreases with the increase of powder size. The powder compact HIPed from powder with a full size range (5–250 μm) achieves excellent tensile properties and the best fatigue strength compared with the HIPed fine and coarse powders. The relevant mechanisms are discussed based on the powder surface quality and as-HIPed microstructure.
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This work was supported by the Natural Science Foundation of China (Grant No. 51801132).
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Guo, R., Yu, B., Shi, X. et al. Effect of Powder Size on Fatigue Properties of Ti-6Al-4V Powder Compact Using Hot Isostatic Pressing. JOM 71, 3614–3620 (2019). https://doi.org/10.1007/s11837-019-03612-7
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DOI: https://doi.org/10.1007/s11837-019-03612-7