Investigation on Hot Deformation Behavior of 430 Ferritic Stainless Steel

Abstract:

The hot deformation behavior and microstructure evolution of 430 ferritic stainless steel (430 FSS) were investigated within the temperature range of 950°C~1150°C at the strain rate of 0.01 s^-1, 0.1 s^-1, and 1.0 s^-1 using a thermo-mechanical simulator. The effects of temperature and strain rate on the flow behavior and microstructures of 430 ferritic stainless steel at reduction ratio 50 % were analyzed. Results indicated that the apparent stress exponent and the apparent activation energy of the steel were about 1.08 and 344 kJ/mol, respectively. The hot deformation equation of 430 was considered as. There was a relationship between the softening mechanism and Zener-Hollomon parameter (abbreviated Z). With the Z value increasing from 4.30×10¹⁰ to 5.00×10¹⁴, the hot deformation peak stress correspondingly increased from 10.74 MPa to 76.02MPa.

• Periodical: Advanced Materials Research (Volume 721)
• Pages: 82-85
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.721.82
• Online since: July 2013
• Authors: Jian Bin Zhang, Dong Mei Yu, Shao Rui Niu, Gen Shun Ji
• Keywords: Activation Energy, Compression, Constitute Equation, Ferritic Stainless Steel (FSS)

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