Abstract
Aging treatments in the temperature range of 1000 to 1200 °C for different time intervals ( 10, 30, and 60 min) in a solution-treated 2205 duplex stainless steel (DSS) are carried out respectively. The migration of γ/α interface boundary after different aging treatments is measured by optical metallograph and calculated by DICTRA software. The experimental results are in agreement with calculated ones. The migration of γ/α interface boundary with increased keeping time depends on the chemical potential of chromium in each phase. At aging temperature of 1100 °C, the back diffusion effect of chromium results in the opposite direction migration of γ/α interface. Therefore, the ferrite volume fraction is lower at first and then it is higher after 1800 s diffusion.
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Foundation Item: Item Sponsored by National Natural Science Foundation of China (50671061; 50971137)
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Liu, X., Ding, Xp., He, Yl. et al. Experimental Study and Kinetic Calculation on Migration of γ/α Interface Boundary During High Temperature Aging for 2205 Duplex Stainless Steel. J. Iron Steel Res. Int. 17, 45–49 (2010). https://doi.org/10.1016/S1006-706X(10)60127-6
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DOI: https://doi.org/10.1016/S1006-706X(10)60127-6