Journal info
Select Journal
Journals
Bratislava Medical Journal Endocrine Regulations General Physiology and Biophysics Neoplasma Acta Virologica Studia Psychologica Cardiology Letters Psychológia a patopsych. dieťaťa Kovove Materialy-Metallic Materials 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 Slovenská hudbaWebshop Cart
Your Cart is currently empty.
Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.
Kovove Materialy-Metallic Materials Vol. 58 (2020), no. 4, pp.255–266 |
||
Title: Hot deformation characteristics of Incoloy 926 super-austeniticstainless steel | ||
Author: Q. D. Nie, G. Yang, X. Wang, C. Qin, X. L. Li, N. X. Li | ||
Abstract: The deformation behavior of the Incoloy 926 super-austenitic stainless steel at 1000–1150 °C and 0.001–10 s–1 was investigated. The corrected true stress-true strain curves were obtained by compensating the interfacial friction in the flow stress-strain curves. The interfacial friction increased the flow stress, and this increase was more pronounced at higher strains. According to the constitutive model, the activation energy varied from 328 to 384 kJ mol–1 with respect to strain. The mechanical parameters, peak stress and peak strain, critical stress and critical strain, were described by clearer equations with the temperature and strain rate. Moreover, based on the processing maps and the microstructural observation, the unsafe deformation domain where the localized plastic flow occurred was validated at above 1 s–1, the favorable process at 1100 °C and 0.1 s–1 where fine and homogeneous grains can be obtained was determined simultaneously. |
||
Keywords: super-austenitic stainless steel, hot deformation, constitutive model, processing maps | ||
Published online: 02-Jul-2020 | ||
Year: 2020, Volume: 58, Issue: 4 | Page From: 255, Page To: 266 | |
doi:10.4149/km_2020_4_255 |
||
|
download file |
|