刘德义,尹青学,刘世程

• 1:大连交通大学材料科学与工程学院

摘要(Abstract)：

利用真空扩散焊方法制备了铁中间层钛-钢扩散焊接头,并采用OM、SEM、EDS、XRD、显微硬度和拉伸试验方法,研究了铁中间层钛-钢扩散复合界面组织和性能。结果表明,在900～1050℃、30 min扩散条件下,Fe、Ti原子在界面处发生了互扩散;钛侧形成βTi+α-βTi+αTi组织,钢侧发生脱碳,铁中间层形成柱状晶组织;拉伸强度随扩散温度升高呈现先增加后减小的趋势,900℃、30 min扩散试样拉伸强度最高,达到260 MPa;拉伸断口具有粗糙断裂区、脆性断裂区及二次断裂区特征,并在断口上检测出TiC、FeTi和Fe2Ti相。

关键词(KeyWords)： 钛-钢;扩散复合;铁中间层;组织与性能

Abstract:

Keywords:

基金项目(Foundation): 辽宁省教育厅高等学校科学研究计划资助项目(2008104)

作者(Author): 刘德义,尹青学,刘世程

DOI: 10.13289/j.issn.1009-6264.2012.07.011

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