摘要
某核电机组按RCC-M(2000版+2002补遗)采购的X6CrNiCu17-04阀杆在安装试验过程中,阀杆均发生了断裂。对断裂阀杆,进行化学成分、室温拉伸、0℃冲击试验和硬度复试、断口形貌和金相组织分析,结果表明断裂呈沿晶脆性断裂模式,室温拉伸和冲击试验结果均不满足规定要求。产生该问题的根本原因是由于RCC-M英文版的M5110在2000版至2007版及期间的补遗,均将该合金中的化学元素"铌"错写为"钒",直至2012版才进行了修正;由于化学成分错误,导致各项力学性能均不能满足设计要求。
The stem of X6CrNiCu17-04purchased by a nuclear power plant according to RCC-M(Addendum of2000edition+2002)has been fractured during the installation test.The fracture stem,chemical composition,tensile at room temperature,0℃impact test and hardness retest,fracture morphology and microstructure analysis showed that the fracture was along the crystal brittle fracture mode,room temperature tensile and impact test results are not satisfied Prescribed requirements.The root cause of this problem is that the RCC-M English version of the M5110in the2000edition to the2007edition and during the addendum,the alloy of the chemical element“niobium”is wrongly written as“vanadium”until2012version was carried out Due to the chemical composition error,resulting in the mechanical properties can not meet the design requirements.
作者
雷欣
焦少阳
王晰
LEI Xin ;JIAO Shao-yang ;WANG Xi(China Nuclear Power Engineering Co., Ltd., Beijing 100840, China)
出处
《科技视界》
2018年第3期150-152,共3页
Science & Technology Vision
