230合金高温蠕变变形行为与本构模型研究  

Study on creep deformation behavior and constitutive model of Alloy 230 at elevated temperature

作　　者：王弘昶[1] 侯鑫阳 王煦嘉[1] 龙瑶 李玲[1] 石悠[1] 李强[3] 张宇翾 宫建国[2] WANG Hongchang;HOU Xinyang;WANG Xujia;LONG Yao;LI Ling;SHI You;LI Qiang;ZHANG Yuxuan;GONG Jianguo(Shanghai Nuclear Engineering Research and Design Institute,Shanghai 200030,China;School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China;China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]上海核工程研究设计院,上海200030 [2]华东理工大学机械与动力工程学院,上海200237 [3]中国原子能科学研究院,北京102413

出　　处：《压力容器》2025年第1期10-18,共9页Pressure Vessel Technology

基　　金：国家自然科学基金项目(52175139);上海核工程研究设计院股份有限公司内部能力建设课题“高温应用的材料性能研究”(22YW2064)。

摘　　要：为了研究230合金(UNS N06230合金)蠕变变形行为与演化规律,保障热管堆、航空航天等领域中的高温部件的安全运行。开展了230合金在不同温度和应力水平下的单轴蠕变试验,分析了230合金蠕变特性与温度和应力水平的关系,建立了基于Kachanov-Rabotnov模型与θ投影法的蠕变本构模型。结果表明:230合金的蠕变变形特性与温度有很强的相关性,温度为750℃时,存在较明显的蠕变第一阶段;温度为900℃时,蠕变第一阶段基本消失,蠕变变形曲线主要由第二、三阶段主导。Kachanov-Rabotnov蠕变损伤力学本构模型可以较好地描述230合金高温下的蠕变变形行为。研究结果可以为采用230合金的高温设备的长期安全运行提供保障。To investigate the creep deformation behavior and evolution of Alloy 230(UNS N06230)for ensuring the safe operation of high-temperature components in heat pipe reactors and aerospace applications,uniaxial creep tests were conducted under various temperatures and stress levels.The relationship between creep characteristics,temperature,and stress was analyzed,and a creep constitutive model was established based on the Kachanov-Rabotnov model and theθprojection method.Results indicate that the creep deformation behavior of Alloy 230 is strongly temperature-dependent.At 750℃,a distinct primary creep stage is observed,while at 900℃,the primary stage nearly disappears,and the creep curve is dominated by the secondary and tertiary stages.The Kachanov-Rabotnov creep damage constitutive model effectively describes the high-temperature creep behavior of Alloy 230.The results of the study can provide a reliable assurance for the long-term safe operation of elevated temperatures components using Alloy 230.

关 键 词：230合金 蠕变 本构模型 损伤力学 

分 类 号：TH142[一般工业技术—材料科学与工程] O344.6[机械工程—机械制造及自动化] O346.5[理学—固体力学]