高导热W-金刚石复合材料钨靶模块热应力分析  

Thermal Stress Analysis of Tungsten Monoblck of W-diamond Composite with High Thermal Conductivity

作　　者：孙嘉隆 曹振亚 姜志忠[1,2] 陈浩 刘慧渊[3] SUN Jialong;CAO Zhenya;JIANG Zhizhong;CHEN Hao;LIU Huiyuan(Institute of Nuclear Energy Safety Technology,Hefei Institute of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Science Island Branch,Graduate School of USTC,Hefei 230026,China;Falcontect Rapid Manufacturing Technology Co.,Ltd.,Wuxi 214028,China)

机构地区：[1]中国科学院合肥物质科学研究院核能安全技术研究所,安徽合肥230031 [2]中国科学技术大学研究生院科学岛分院,安徽合肥230026 [3]飞而康快速制造科技有限责任公司,江苏无锡214028

出　　处：《热加工工艺》2024年第18期69-73,共5页Hot Working Technology

基　　金：国家磁约束核聚变能发展研究专项项目(2018YFE0312200)。

摘　　要：核聚变堆中偏滤器在高热通量条件下服役将产生高温及高热应力导致钨靶模块开裂失效。探究了自主研发的新型W-金刚石复合材料不同热导率对偏滤器钨靶模块温度及热应力的预期影响。首先通过理论公式计算了W-金刚石复合材料的理论物性,并利用ANSYS软件模拟对比了以不同热导率的W-金刚石复合材料和纯W材料作为面向等离子体材料(PFM)的钨靶模块在20 MW/m^(2)热通量下的温度分布及热应力。结果表明,采用W-金刚石复合材料作为PFM能够极大程度地降低模块表面的最高温度,改善模块温度梯度,降低模块等效应变,但由于复合材料弹性模量较高,模块的等效应力并未得到缓解。该结果将对材料的设计及偏滤器结构优化提供重要的技术支持。The tungsten monoblock of divertor in nuclear reactor cracks and fails as a result of high temperature and thermal stress under the working condition of high heat flux.The effects of self-developed W-diamond composites with different thermal conductivities on the temperature and thermal stress of the tungsten monoblock of divertor were investigated.Firstly,the theoretical physical properties of W-diamond composites at different temperatures were calculated by theoretical formulas.The thermal stress and temperature distribution of tungsten monoblock with W-diamond composites with different thermal conductivities and pure tungsten material as plasma-facing materials(PFM)at 20 MW/m^(2) heat flux were simulated and compared by ANSYS software.The result shows that,using W-diamond composite as PFM can greatly reduce the maximum module surface temperature,improve the module temperature gradient,reduce the effects of modules.However,due to high elastic modulus of the composite material,the effective stress of the module is not relieved.The result can provide important technical support for the design of W-diamond composite and structure optimization of divertor.

关 键 词：W-金刚石 偏滤器 钨靶模块 热应力 有限元分析 

分 类 号：TB333.1[一般工业技术—材料科学与工程]