理化检验-物理分册2026，Vol.62Issue(8)：65-71,7.DOI:10.11973/lhjy-wl260194
某核电联轴器膜片断裂原因
Reason for diaphragms fracture of a certain nuclear power coupling
鲁佳昌 1刘艳 1车淑平 1沈剑1
作者信息
- 1. 苏州热工研究院有限公司,苏州 215004
- 折叠
摘要
Abstract
After 4 years of service,it was found that the diaphragms near the coupling side of a certain nuclear power coupling were completely broken,and the diaphragms on the pressure stage pump side were partially broken.The reasons for the fracture of the coupling diaphragms were analyzed using macroscopic observation,scanning electron microscopy and energy spectrum analysis,X-ray diffraction analysis,chemical composition analysis,metallographic examination,mechanical property testing.The results show that the fracture property of the coupling diaphragms was corrosion fatigue fracture.Under the interaction of alternating stress and corrosive medium,the stress concentrated area around the circular hole of some diaphragms first fractured,led to the redistribution of coupling load and accelerated the fatigue fracture process of the remaining diaphragms.关键词
联轴器膜片/301不锈钢/腐蚀疲劳断裂/应力集中/力学性能Key words
coupling diaphragm/301 stainless steel/corrosion fatigue fracture/stress concentration/mechanical property分类
通用工业技术引用本文复制引用
鲁佳昌,刘艳,车淑平,沈剑..某核电联轴器膜片断裂原因[J].理化检验-物理分册,2026,62(8):65-71,7.
