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为了优化热静压扩散连接工艺参数,应用有限元法对Be/HR-1不锈钢扩散连接界面附近铁和铍元素的分布进行了计算机模拟,并通过俄歇电子能谱(AES)进行实验测定。结合计算机模拟结果和实验数据探讨了扩散连接界面附近铁和铍元素的分布、扩散宽度与温度、压力和时间的关系。结果表明:在1050℃/60 MPa/2 h和750℃/60 MPa/2 h热静压下,扩散连接界面附近Be,Fe元素分布的实测数据与计算机模拟结果基本吻合;在60 MPa/2 h热静压下,加热温度分别为1050和750℃时对扩散宽度影响的实测数据与计算机模拟结果基本吻合,1050℃时的扩散宽度是750℃时的2.5倍;在750℃/2 h热静压下,压力分别为30,40,50,60 MPa时对扩散宽度影响的实测数据与计算机模拟结果基本吻合,扩散宽度与压力成抛物线关系;在750℃/60 MPa热静压下,扩散宽度与扩散时间的模拟曲线也成抛物线关系。
In order to optimize the hydrostatic pressure diffusion bonding process parameters, the distribution of iron and beryllium in the vicinity of the diffusion bonding interface of Be / HR-1 stainless steel was simulated by finite element method and measured by Auger electron spectroscopy (AES). The distribution of iron and beryllium in the vicinity of the diffusion bonding interface was discussed based on computer simulation results and experimental data. The relationship between diffusion width and temperature, pressure and time was discussed. The results show that the measured data of Be and Fe distributions near the interface of diffusion bonding agree well with the results of computer simulation at 1050 ℃ / 60 MPa / 2 h and 750 ℃ / 60 MPa / 2 h thermal hydrostatic pressure. At 60 MPa / 2 h The experimental data of the effects of thermal hydrostatic pressure and heating temperature on diffusion width at 1050 and 750 ℃ are basically consistent with the computer simulation results. The diffusion width at 1050 ℃ is 2.5 times that of 750 ℃; at 750 ℃ / 2h heat The measured data of the influence of diffusion width under static pressure and pressure of 30, 40, 50 and 60 MPa are basically consistent with the results of computer simulation. The diffusion width and pressure are parabolic. Under the condition of 750 ℃ / 60 MPa hydrostatic pressure, The simulation curve of width and diffusion time also has a parabolic relationship.