TC18钛合金增材制造材料超声检测特征的试验研究

摘要

针对TC18激光、电子束增材制造钛合金及变形钛合金3种不同制造工艺的材料开展超声检测特征试验研究.结果表明,TC18钛合金增材制造材料不同成形方向的超声波声速、材料衰减及检测灵敏度均存在较大差异,与变形钛合金相比具有明显的方向性.本研究结果对于增材制造制件的超声检测方法研究具有重要参考价值.%The experimental research was carried out on the ultrasonic characteristics of 3 kinds of TC 18 titanium alloys,which were manufactured by laser additive manufacturing,electron-beam additive manufacturing and forging,respectively.The research reveals that,in contrast with forged titanium alloy,additive manufacturing titanium alloy has obvious directivity,which is manifested in the difference in velocity,attenuation and ultrasonic sensitivity of different directions.The results are of great value to the ultrasonic testing method research of additive manufacturing products.