A subsecond and novel approach of electroshock treatment (EST) is used in this study to repair defects in directed-energy-deposited Ti-5Al-5Mo-5V-3Cr-1Zr near-β titanium alloy. After EST, the porosity of the specimen decreased significantly from 0.81 to 0.1 pct. Large cracks observed at the bottom of the above mentioned near-β titanium alloy became intermittent small cracks and the number of voids decreased. The defects in the top and middle regions of the specimens are repaired. The potential defect repair is attributable to energy concentration, which promoted the coalescence of defect tips, and thermal stresses, which compressed the defects inward and closed them.

本研究使用亚秒级新颖的电击处理方法（EST）修复定向能量沉积的Ti-5Al-5Mo-5V-3Cr-1Zr近β钛合金中的缺陷。EST以后，样品的孔隙率从0.81显着下降到0.1 pct。在上述近β-钛合金的底部观察到的大裂纹变为间歇性小裂纹，并且空隙数量减少。修复了样品顶部和中间区域的缺陷。潜在的缺陷修复归因于能量集中，这促进了缺陷尖端的合并，而热应力则使缺陷向内压缩并封闭了缺陷。