基于蒙特卡罗方法的铝/钢熔钎焊界面金属间化合物层生长分析  

Growth analysis of intermetallic compounds on aluminumsteel MIG-brazing interface based on Monte Carlo method

作　　者：刘宁[1,2] 黄健康[1] 陈满骄 石玗[1] 曹睿[1] 陈剑虹[3] 

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州730050 [2]宝钢集团新疆八一钢铁股份有限公司,乌鲁木齐830022 [3]兰州理工大学

出　　处：《焊接学报》2016年第2期55-58,62,共5页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(51165023)

摘　　要：针对铝/钢熔钎焊界面金属间化合物在SEM,EDS,XRD界面测试研究的基础上,确立了界面由Fe_2Al_5、FeAl_3等金属间化合物组成.在此基础上采用蒙特卡罗方法(monte carlo method,MC),建立了铝/钢界面铝、铁原子的扩散及Al-Fe金属间化合物生长模型,并进行了数值分析和对比研究进一步分析了金属间化合物的生长过程.结果表明,所建立的模型能够很好地反映钢侧Fe_2Al_5的生长,铝侧FeAl_3离散存在,且金属间化合物层的厚度接近试验测量结果.Measurements and analysis with SEM,EDS,XRD confirmed that the intermetallic compounds in aluminum /steel MIG-brazed interface consisted of Fe2Al5 and FeA l3 phases.Based on Monte Carlo method,the diffusion of Al and Fe in aluminum / steel interface and growth model for Al-Fe intermetallic compounds were established,and numerical analysis and comparative study were conducted. The results show that the proposed model could well reflect the growth of Fe2Al5 phase on steel side,and FeA l3 discretely existed on aluminum side,and the thickness of the intermetallic compound was close to the experimentally measured results.

关 键 词：铝钢界面 金属间化合物 蒙特卡罗 生长分析 

分 类 号：TG457[金属学及工艺—焊接]