Hot deformation behavior of Super304H austenitic heat resistant steel

Shu-ping Tan; Zhen-hua Wang; Shi-chang Cheng; Zheng-dong Liu; Jie-cai Han; Wan-tang Fu

doi:10.1007/s12613-010-0208-9

International Journal of Minerals, Metallurgy, and Materials ›› 2010, Vol. 17 ›› Issue (2) : 167 -172. DOI: 10.1007/s12613-010-0208-9

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Hot deformation behavior of Super304H austenitic heat resistant steel

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Abstract

The hot compression tests of Super304H austenitic heat resistant steel were carried out at 800–1200°C and 0.005–5 s⁻¹ using a Gleeble 3500 thermal-mechanical simulator, and its deformation behavior was analyzed. The results show that the flow stress of Super304H steel decreases with the decrease of strain rate and the increase of deformation temperature; the hot deformation activation energy of the steel is 485 kJ/mol. The hot deformation equation and the relationship between the peak stress and the deformation temperature and strain rate is obtained. The softening caused by deformation heating cannot be neglected when both the deformation temperature and strain rate are higher.

Keywords

austenitic steel / heat resistant / hot deformation / flow stress / dynamic recrystallization

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Shu-ping Tan, Zhen-hua Wang, Shi-chang Cheng, Zheng-dong Liu, Jie-cai Han, Wan-tang Fu. Hot deformation behavior of Super304H austenitic heat resistant steel. International Journal of Minerals, Metallurgy, and Materials, 2010, 17(2): 167-172 DOI:10.1007/s12613-010-0208-9

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