Effects of Temperature and Oxygen Concentration on the Characteristics of Decarburization of 55SiCr Spring Steel
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چکیده
Effects of temperature and oxygen concentration on decarburization of 55SiCr spring steel were investigated at the temperature range of 500°C–1 200°C by using a Muffle furnace (an atmosphere of ambient air) and a Simultaneous Thermal Analyzer (low oxygen concentration with 2% O2 and 98% N2). In ambient air, the decarburization behavior can be divided roughly into five temperature ranges: T≥1 200°C, no decarburization; TG (A3 for 55SiCr when its carbon concentration equals to zero)700°C, only partial decarburization. Lower oxygen concentration results in decrease in a growth rate of the oxide scale and leads to different characteristics of decarburization.
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تاریخ انتشار 2010