2013•Heat Treatment Technology and EquipmentRequires access

The Effect of Solution Cooling Rate on Microstructure and Property of 17-4PH Stainless Steel

QU De-y

Abstract

The effect of different solution cooling rate on microstructure and mechanical property of 174PH steel was studied by optical microscope and tensile testing machine at the same solid solution temperature and aging temperature.The results showed that 17-4PH stainless steel could obtain good comprehensive mechanical properties using heat treatment with 1040 ℃ × 2 h oil cooling,620 ℃ × 2 h air cooling.The microstructure and mechanical property of 17-4PH stainless steel after oil cooling and aging were better than ones after air cooling and furnace cooling.

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Key concepts: Microstructure, Materials science, Air cooling, Ultimate tensile strength, Metallurgy, Optical microscope, Water cooling, Slow cooling