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

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. Th...

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Veröffentlicht in:Transactions of Nonferrous Metals Society of China 2014-03, Vol.24 (3), p.697-704
Hauptverfasser: JIANG, Hai-tao, YAN, Xiao-qian, LIU, Ji-xiong, DUAN, Xiao-ge
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Sprache:eng
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Zusammenfassung: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 (Fe2Ti/FeTi) along with some TiC distributing continuously at diffusion reaction layer.
ISSN:1003-6326
DOI:10.1016/S1003-6326(14)63113-7