摘要
由于镍基合金焊缝晶间组织是以奥氏体形态存在,声学特征与奥氏体不锈钢类似,从而导致超声检测在缺陷定量、定位、定性方面存在一定难度。文章主要介绍我所在中石化高含硫井站UNS N08825镍基合金管道(管径DN100-DN150,厚度8.5-15mm)对接焊缝检测中使用的超声检测的具体方法,以供参考。
Because the intergranular microstructure of nickel-based alloy weld exists in Austenite morphology and its acoustic characteristics are similar to those of austenitic stainless steel, it is difficult to detect defects quantitatively, locatively and qualitative-ly. This paper mainly introduces the UNS N08825 nickel-based alloy pipeline of the high sulfur well station of Sinopec Group （diam-eter is DN100-DN150 and the thickness 8.5-15mm） and the specific method of ultrasonic detection used in welded seam inspection.
出处
《科技创新与应用》
2018年第9期161-162,共2页
Technology Innovation and Application
关键词
镍基合金
超声检测
焊缝
nickel-based alloy
ultrasonic testing
welded seam
