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Strength and structure of furnace-brazed joints between titanium and steel using silver-based braze alloy

机译:使用银基钎焊合金钛和钢材炉钎焊接头的强度与结构

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The lap joint of a commercially pure titanium plate to a low carbon steel plate was produced by vacuum brazed furnace using Ag-Cu34-Ti2 filler alloy at various temperatures and lap widths to investigate the effects of the brazing parameters on the joint strength and structure. It is found that the shear strength of brazed joints depended strongly on the lap width. Within investigating parameters, it became obvious that with decreases the lap width the shear strength of the joints increases. The maximum shear strength of the joints was 54 MPa for the specimens brazed at 850°C for 15 min. According to experimental observations, intermetallic compound layers of CuTi and Cu{sub}2Ti were formed at the interface area. Increasing the brazing temperature led to an increase and growth of these layers. The fracture path after shear test occurred mainly at CuTi layer since this layer was hard and brittle.
机译:在各种温度下使用Ag-Cu34-Ti2填充合金真空钎焊炉通过真空钎焊炉制造在低碳钢板上的搭接接头,并在各种温度下,横向宽度,以研究钎焊参数对关节强度和结构的影响。发现钎焊接头的剪切强度依赖于圈宽度。在调查参数范围内,显而易见的是,随着膝盖宽度的降低,关节的剪切强度增加。接头的最大剪切强度为54MPa,用于在850℃下钎焊15分钟。根据实验观察,在界面区域形成切割和Cu} 2Ti的金属间化合物层。增加钎焊温度导致这些层的增加和生长。剪切试验后的断裂路径主要发生在Cuti层,因为该层很硬而脆。

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