Interface structure and mechanical properties of the TiAl/42CrMo steel joint vacuum brazed with Ag¿Cu/Ti/Ag¿Cu filler metal
Interface structure and mechanical properties of the TiAl/42CrMo steel joint vacuum brazed with Ag¿Cu/Ti/Ag¿Cu filler metal
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DOI：
10.1016/j.scriptamat.2006.03.055
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发表时间：
2006-07
影响因子：
6
通讯作者：
Yulong Li;P. He;Jicai Feng
中科院分区：
文献类型：
--
作者：
Yulong Li;P. He;Jicai Feng
采用Ag-Cu/Ti/Ag-Cu钎料真空钎焊TiAl和42 CrMo钢。接头界面分为三个不同的区域，包括TiAl附近的反应层，中心区，和TiC反应层邻近钢。在钎焊过程中，随着钎焊温度的升高或钎焊时间的延长，AlCu 2 Ti、AlCuTi和TiC相快速形成。通过对钎焊工艺条件和接头强度的比较，确定了最佳的钎焊工艺参数。钎焊温度为900°C，钎焊时间为5 min时，接头的室温抗拉强度和剪切强度分别为347 MPa和229 MPa。
TiAl and 42CrMo steel were vacuum brazed with Ag–Cu/Ti/Ag–Cu filler metal. The joint interface was divided into three distinct zones, including the reaction layer near TiAl, the central zone, and the TiC reaction layer adjacent to the steel. During brazing, AlCu2Ti, AlCuTi and TiC phase formed quickly with an increase in brazing temperature or brazing time. By comparing the brazing conditions and joint strengths, the optimum brazing parameters were obtained. When brazed at 900°C for 5min, the room temperature tensile strength and shear strength of the joint were 347MPa and 229MPa, respectively.