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冯吉才

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Microstructure and Strength of Vacuum-Brazed Joint of TiAl-Based Alloy to 40Cr Steel

冯吉才Huijie LIU and Jicai FENG

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摘要/描述

Vacuum brazing of TiAl-based alloy to 40Cr steel has been carried out at 1173K for 0.5-40min using Ag-Cu-Ti filler metal. The microstructural analyses indicate that three reaction products, Ti(Cu,Al)2, Ag(s.s.) and TiC, are present in the brazing seam, and the interface structure of the brazed joint is TiAl/Ti(Cu,Al)2 +Ag(s.s.)/Ag(s.s.)+Ti(Cu,Al)2/TiC/40Cr. The experimental results show that the shear strength of the brazed TiAl/40Cr joints decreases as the brazing time increases, and it is up to 175MPa when the joint is brazed at 1173K for less than 2min.

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版权说明:以下全部内容由冯吉才上传于   2005年02月22日 17时49分04秒,版权归本人所有。

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