摘要
初步研究了超声相控阵检测技术在A-100钢电子束熔丝成形制件中的应用。结果表明:超声相控阵检测技术在A-100钢电子束熔丝成形制件微裂纹检测和大厚度制件检测中有较好的应用效果;与成形路径等因素相关的微观组织结构对检测技术的应用有较大影响;超声波入射方向和角度选择对微裂纹的识别非常关键;制件内部微裂纹存在与平行于逐层生长方向的某端面呈现小倾角或近似平行的断续拐弯状的分布趋势。
In this paper,the application of phased array ultrasonic testing（PAUT） on A-100 steel manufactured by electron beam wire deposition（EBWD） is researched.The results show that：PAUT has well application effect in the EBWD A-100 steel micro crack detection and large thickness parts inspection.The microstructure of the EBWD A-100 steel that related to such factors as the forming path has great effects to PAUT application.The ultrasonic wave incident direction and angle are critical to the recognition of micro cracks.The micro-cracks have the tendencies of parallel or with small angle to one of the surface that parallel with the layer by layer growth direction in EBWD A-100 steel.
出处
《航空制造技术》
2016年第8期66-70,共5页
Aeronautical Manufacturing Technology
关键词
A-100钢
电子束熔丝成形
超声相控阵检测
扇形扫查
动态深度聚焦
A-100 steel
Electron beam wire deposition（EBWD）
Phased array ultrasonic testing（PAUT）
Sector scan（Sscan）
Dynamic depth focusing（DDF）
