【摘要】 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。更多还原

【Abstract】 In order to provide the best technical parameter for hot pressing,the distributions of Fe and Be near Be/HR-1 stainless steel diffusion bonding interface under different technical parameter were simulated by the finite element method and measured by means of auger electron spectroscopy(AES).The simulated results were compared with experimental value,and the distributions of Fe and Be near Be/HR-1 stainless steel diffusion bonding interface and the relationship between diffusion width and heating temperature and holding time and pressure were also discussed.The results showed that the simulated contents of Fe and Be near Be/HR-1 stainless steel diffusion bonding interface fitted with the experimental ones at 1050 ℃/60 MPa/2 h and 750 ℃/60 MPa/2 h.The simulated diffusion width at 1050 and 750 ℃ were similar to the measured values under 60 MPa and holding time of 2 h,and the diffusion width at 1050 ℃ was 2.5 times one at 750 ℃.The measured diffusion width at 30,40,50 and 60 MPa were similar to the simulated results under 750 ℃ and holding time of 2 h,and there was a parabola relationship between the diffusion width and the pressure.There was also a parabola relationship between the diffusion width and the holding time of 750 ℃ and hot static pressure of 60 MPa.更多还原