国产508-3钢不同温度下非比例多轴循环变形行为研究  

Study of Non-proportionally Multiaxial Cyclic Deformation Behavior of Domestic 508-3 Steel at Different Temperatures

作　　者：田俊 唐妍婕 张丽屏[1] 傅孝龙[1] 邝临源 张瀛[1] 姜露 李辉 刘贞谷 Tian Jun;Tang Yanjie;Zhang Liping;Fu Xiaolong;Kuang Linyuan;Zhang Ying;Jiang Lu;Li Hui;Liu Zhenyu(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《核动力工程》2021年第S02期89-92,共4页Nuclear Power Engineering

摘　　要：国产508-3钢是压水反应堆压力容器的关键材料,为了研究国产508-3钢不同温度下的非比例多轴循环变形行为,本文在25、200和350℃下,对国产508-3钢开展了多轴非比例路径下应变控制和应力控制的全寿命疲劳试验。试验中采用了沙漏形和蝶形的非比例路径,揭示了材料在不同加载路径和不同加载条件下的循环变形特征和棘轮变形行为。研究表明,国产508-3钢的非比例多轴循环变形行为具有明显的温度相关性,由于动态应变时效效应影响,在350℃时材料表现出循环硬化或稳定的特征。Domestic 508-3 steel is the key material for the pressure vessel of pressurized water reactor.To study the non-proportionally multiaxial cyclic deformation behavior of domestic 508-3 steel at different temperatures,whole-life fatigue tests under multiaxial non-proportionally path with strain and stress controlled were performed on domestic 508-3 steel.Hourglass type and butterfly type non-proportionally paths were chosen in the tests,which revealed cyclic deformation characteristics and ratcheting behavior under different loading paths and different loading conditions.Results show that notable temperature dependent non-proportionally multiaxial cyclic deformation behavior of domestic 508-3 steel can be observed,and due to the effect of dynamic strain aging,the material exhibits cyclic hardening or stable characteristic at 350℃.

关 键 词：508-3钢 非比例 不同温度 循环变形 

分 类 号：O344[理学—固体力学]