Abstract:
A mechanism is proposed to explain the autoignition of titanium alloys with formation of a juvenile surface of the metal in oxygen at elevated pressure. It is based on the assumption that the self-heating of failed sample fragments to the melting point of the alloy is due to the heat released during oxygen adsorption on the juvenile surface and its dissolution in the solid metal. In this case, the rate-determining stage of the interaction is the adsorption process, whose rate depends on the oxygen pressure.
Keywords:titanium alloys, autoignition, adsorption, oxygen dissolution in metal.
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