CAJ | 학술논문

为了优化热静压扩散连接的工艺参数，应用有限元计算法建立了数学模型，对1083K热静压条件下，不同冷却方式的铍／不锈钢扩散连接的温度场进行了计算机模拟。结果说明冷却介质对温度场有较大影响：水冷、空冷时界面的冷速与时间成抛物线关系，炉冷时界面的温度与时间成线性关系，其热应力较小；扩散连接温度场呈现非对称性，水冷和空冷时高温区出现在不锈钢心部，炉冷时移向铍心部；当传热系数h取80时，结合面两侧温度梯度减小，降低了界面热应力，可提高接头性能，此结果与实验测定基本吻合。
위료우화열정압확산련접적공예삼수，응용유한원계산법건립료수학모형，대1083K열정압조건하，불동냉각방식적피／불수강확산련접적온도장진행료계산궤모의。결과설명냉각개질대온도장유교대영향：수랭、공랭시계면적랭속여시간성포물선관계，로랭시계면적온도여시간성선성관계，기열응력교소；확산련접온도장정현비대칭성，수랭화공랭시고온구출현재불수강심부，로랭시이향피심부；당전열계수h취80시，결합면량측온도제도감소，강저료계면열응력，가제고접두성능，차결과여실험측정기본문합。
In order to provide the best technic parameter for hot pressing, the diffusion bonding temperature field of Be/HR-1 Stainless Steel under different cooling methods was simulated by the finite element method.The results show that there is a parabola relationship between the interlace cooling speed and time,and high temperature area appear in stainless steel center zone,while Be/HR-1 Stainless Steel cooled in water or air;There is a linear relationship between the interface temperature and time,and high temperature area move to beryllium center zone, while Be/HR-1 Stainless Steel cooled in funace;When combined heat transfer coefficient （h） take 80, as this can reduce the both sides temperature gradient on interface ,the hot stress on tinterface are reduced effectively to improve the diffusion bonding strength,this results fit with the experience ones well.