Effect of HIP Treatment on Fatigue Notch Sensitivity of Ti-6Al-4V Alloy Fabricated by Electron Beam Melting

• 来源期刊: 金属学报（英文版）
• 年，卷（期）: 2019,（7）
• 页码范围: 869-875
• 页数: 7页
• 语种: 英文

摘要

The effect of hot isostatic pressing (HIP) treatment on the fatigue notch sensitivity of Ti-6Al-4V alloy fabricated by electron beam melting (EBM) was investigated.The results indicate that the fatigue notch sensitivity of the as-fabricated samples is much lower than that of HIPed samples.The variation of α lamella thickness and the distribution of pore defects have an effect on the fatigue strength in smooth and notched EBM Ti-6Al-4V samples,resulting in the divergence of the as-fabricated and HIPed samples on fatigue notch sensitivity.