Effect of heat treatment on microstructure and mechanical property of Ti–steel explosive-rolling clad plate

Autor: Ji-Xiong Liu, Xiao-ge Duan, Haitao Jiang, Xiao-Qian Yan
Rok vydání: 2014
Předmět:
Zdroj: Transactions of Nonferrous Metals Society of China. 24:697-704
ISSN: 1003-6326
DOI: 10.1016/s1003-6326(14)63113-7
Popis: The effect of heat treatment on microstructure and mechanical properties of the Ti–steel explosive-rolling clad plate was elaborated by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), micro-hardness test and shear test. The composites were subjected to heat treatment at temperature of 650–950 °C for 60 min. The results show that the heat treatment process results in a great enhancement of diffusion and microstructural transformation. The shear strength decreases as the treatment temperature increases. Heated at 850 °C or below, their shear strength decreases slowly as a result of the formation of TiC in the diffusion interaction layer; while at the temperature of 850 °C or above, the shear strength decreases obviously, which is the consequence of a large amount of Ti–Fe intermetallics (Fe 2 Ti/FeTi) along with some TiC distributing continuously at diffusion reaction layer.
Databáze: OpenAIRE