7050铝合金环锻件超声波探伤缺陷分析  

Analysis of defects in ultrasonic flaw detection of 7050 aluminum alloy ring forgings

作　　者：任乾光 张正 杨家典 杨良会 王华东 吴永安 REN Qianguang;ZHANG Zheng;YANG Jiadian;YANG Lianghui;WANG Huadong;WU Yongan(Guizhou Aviation Technology Development Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]贵州航宇科技发展股份有限公司,贵州贵阳550081

出　　处：《物理测试》2021年第4期33-36,共4页Physics Examination and Testing

摘　　要：7050铝合金环锻件内部经超声波探伤发现大量缺陷,缺陷将影响锻件性能,极易在精加工过程中暴露在成品表面,危害性极大。为了分析原因,利用低倍检验、金相显微镜、扫描电镜对7050铝合金环锻件的探伤缺陷进行相关检测,确定缺陷形貌及分布特点,解剖的缺陷特征属于典型的Al-Mg-O的化合物夹杂。A large number of defects were found in the inner part of 7050 aluminum alloy ring forgings during ultrasonic flaw detection. The defects would influence the properties of forgings. They were easily exposed to the surface of finished products in the finishing process with a tremendous harm. In order to analyze the causes,the defects of 7050 aluminum alloy forgings were detected by means of macroscopic examination,metallographic microscope and scanning electron microscope. The morphology and distribution characteristics of the defects were confirmed. It showed that the analytical defects belonged to the typical Al-Mg-O compound inclusions.

关 键 词：锻件 铸锭 夹杂 

分 类 号：TG316.192[金属学及工艺—金属压力加工]