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Analysis of diffusion bond interface of TiAl base alloy with Ti, TC4 alloy and 40Cr steel

Peng He

2000哈尔滨工业大学学报：英文版Engineering被引 2

摘要

TiAl is diffusion bonded with Ti, TC4 Alloy and 40Cr Steel by heating in vacuum, and analysis of interfaces shows stratified Ti 3Al forms in TiAl/Ti interface closest to TiAl base, and the α phase and the α+β phase arise closest to Ti base at lower temperature and higher temperature respectively; Structure of TiAl/TC4 interface is TiAl/γ+α 2/Ti 3Al/α-Ti/TC4 at lower temperature and TiAl/γ+β+α 2/TC4 at high temperature; in TiAl/40Cr steel interface, obvious decarbonised layer on steel side while TiC and reaction phase with Fe Al Ti system form on TiAl side.

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