RT journal article
T1 Influence of Alpha/Gamma-Stabilizing Elements on the Hot Deformation Behaviour of Ferritic Stainless Steel
A1 Núñez, A.
A1 COLLADO GARCIA, IRENE
A1 Muratori, M.
A1 Ruiz, A.
A1 Almagro, J.F.
A1 Sales Lérida, David
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 FSS
K1 hot deformation
K1 DRX
K1 DRV
K1 LAGBs
K1 crystallographic texture;
K1 EBSD
K1 Gleeble simulation
AB This study investigates the hot deformation behaviour and microstructural evolution of two AISI 430 ferritic stainless steel variants: 0A (basic) and 1C (modified). These variants primarily differ in chemical composition, with 0A containing higher austenite-stabilizing elements (C, N) compared to 1C, which features lower interstitial content and slightly higher Si and Cr. This research aimed to optimize hot rolling conditions for enhanced forming properties. Uniaxial hot compression tests were conducted using a Gleeble thermo-mechanical system between 850 and 990 °C at a strain rate of 3.3 s−1, simulating industrial finishing mill conditions. Analysis of flow curves, coupled with detailed microstructural characterization using electron backscatter diffraction, revealed distinct dynamic restoration mechanisms influencing each material’s response. Thermodynamic simulations confirmed significant austenite formation in both materials within the tested temperature range, notably affecting their deformation behaviour despite their initial ferritic state. Material 0A consistently exhibited a strong tendency towards dynamic recrystallization (DRX) across a wider temperature range, particularly at 850 °C. DRX led to a microstructure with a high concentration of low-angle grain boundaries and sharp deformation textures, actively reorienting grains towards energetically favourable configurations. However, under this condition, DRX did not fully complete the recrystallization process. In contrast, material 1C showed greater activity of both dynamic recovery and DRX, leading to a much more advanced state of grain refinement and recrystallization compared to 0A. This indicates that the composition of 1C helps mitigate the strong influence of the deformation temperature on the crystallographic texture, leading to a weaker texture overall than 0A.
PB Multidisciplinary Digital Publishing Institute (MDPI)
SN 2504-4494
YR 2025
FD 2025
LK http://hdl.handle.net/10498/37852
UL http://hdl.handle.net/10498/37852
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026