Superplastic behavior during warm deformation of martensite in medium carbon steel

作者：Zhang, H.^*; Zhang, L.; Cheng, X.; Xu, L.; Bai, B.

来源：Scripta Materialia, 2010, 62(10): 798-801.

DOI：10.1016/j.scriptamat.2009.12.001

• Superplasticity
• Martensite
• Dynamic recrystallization
• Ultrafine-grained microstructure
• Flow stress

A (ferrite + carbide) microduplex structure formed by dynamic recrystallization of ferrite during warm deformation of martensite was found to exhibit superplastic characteristics. The value of m = 0.4 was obtained at 973 K and a strain rate of 10(-4) s(-1). Microstructural analysis shows that submicron carbides are located at the ferrite grain boundary, while nanometer ones are dispersed inside ferrite grains. This kind of carbide distributi

• 出版日期2010-5
• 单位清华大学