2005•Heat treatment of metalsRequires access

Effect of Quenching and High Temperature Tempering Process on Microstructure and Mechanical Properties of ZG17Ni4.5CrMoV

Zhao Lu-yu

Abstract

The effects of austentizing temperature and tempering temperature and holding time on microstructure and properties of 17Ni4.5CrMoV cast steel were investigated.The results show that the optimal process of this cast steel is quenching after austenitizing at 900℃ and tempering at 620～630℃ for 6～9min/mm.The distribution uniformity of alloying elements and fine dispersive precipitant of carbide particles from tempered structure and the optimal combination of comprehensive mechanical properties are obtained for the test steel after above mentioned quenching and tempering process.

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Key concepts: Tempering, Materials science, Quenching (fluorescence), Microstructure, Metallurgy, Austenite, Carbide, Composite material