无氧铜弯头开裂分析  

CRACKING ANALYSIS OF ELBOW OF OXYGEN-FREE COPPER

作　　者：刘淑凤[1] 王永兰[1] 张智慧[1] 刘安生[1] 王书明[1] 

机构地区：[1]北京有色金属研究总院分析测试所,北京100088

出　　处：《理化检验（物理分册）》2008年第9期504-506,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：无氧铜基器件在后期冷加工过程中在弯头处出现裂纹。对该失效件进行扫描电镜、金相和氧含量分析,并与未出现裂纹的正常件进行对比。结果表明,氧含量超标,存在大量的脆性相氧化亚铜,且材料内部仍留有部分残余应力,是失效的主要原因。The crack of TU2 brazed elbow appeared during the hard-drawn process. It was investigated by means of SEM, metallography and oxygen content analysis. Results showed that the fracture was caused by higher content of O2, a large amount of Cu2 O and residual stress.

关 键 词：无氧铜 弯头 开裂 氧含量 氧化亚铜 残余应力 

分 类 号：TG146.11[一般工业技术—材料科学与工程]