Zr-Sn-Nb合金焊接薄板低周疲劳试验方法研究  

Study on Low-cycle Fatigue Test Method for Zr-Sn-Nb Alloy Welded Sheets

作　　者：戚彦强 李顺平[2,3] 彭倩 闫萌[2] 陈乐[2] 戴训[2] Qi Yanqiang;Li Shunping;Peng Qian;Yan Meng;Chen Le;Dai Xun(Chinese People’s Liberation Army,Unit 92375,China;Science and Technology on Reactor Fuel and Materials Laboratory,Nuclear Power Institute of China,Chengdu,610213,China;School of Materials Science and Engineering,Southwest Jiaotong University,Chengdu,610031,China)

机构地区：[1]中国人民解放军92375部队 [2]中国核动力研究设计院反应堆燃料及材料重点实验室,成都610213 [3]西南交通大学材料科学与工程学院,成都610031

出　　处：《核动力工程》2023年第S01期188-193,共6页Nuclear Power Engineering

摘　　要：为研究锆合金焊接薄板的低周疲劳(LCF)性能,基于锆合金薄板的LCF试验方法,结合组织模拟和有限元方法,从显微组织、显微硬度和单轴拉伸性能等方面对比评估,证实采用组织模拟方法简化焊接接头漏斗试样复杂组织结构基本可行,最终基于耦合建立了焊接薄板漏斗试样的应力应变转换,并采用该方法对焊接薄板LCF性能进行评价。研究结果表明,本研究建立的锆合金焊接薄板的LCF试验方法能够用于评价焊接薄板的LCF性能。In order to study the low cycle fatigue(LCF) properties of Zr-Sn-Nb alloy welded sheets,microstructure simulation and finite element method were combined based on the LCF test method of Zr-Sn-Nb alloy sheets in this study.The microstructure,microhardness and uniaxial tensile properties were compared and evaluated,and it turned out that it was basically feasible to simplify the complex microstructure of welded joint funnel sample by microstructure simulation.Finally,the stress-strain transformation of welded sheet funnel sample was established based on coupling,and the LCF properties of welded sheets were evaluated by this method.The results show that the LCF test method established in this study for Zr-Sn-Nb alloy welded sheets can be used to evaluate the LCF properties of the welded sheets.

关 键 词：锆合金 焊接薄板 焊接接头 有限元 低周疲劳(LCF) 

分 类 号：TL34[核科学技术—核技术及应用]