Creep and Hot Tensile Behavior of AISI 201LN Austenitic Stainless Steel

Author(s)

Pelissari, Gustavo Henrique ^[1] ; Braga, Diogo Pedrino ^[1] ; Fernandes Oliveira, Pedro Henrique ^[1] ; Camilo Magalhaes, Danielle Cristina ^[2] ; Ferrante, Maurizio ^[3] ; Della Rovere, Carlos Alberto ^[2] ; Kliauga, Andrea Madeira ^[2] ; Bueno, Levi de Oliveira ^[4] ; Sordi, Vitor Luiz ^[2]

Affiliation

^[1] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, Rodovia Washington Luiz, Km 235 SP 310, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Mat Engn, Rodovia Washington Luiz, Km 235 SP-310, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Fed Sao Carlos, Dept Mech Engn, Rodovia Washington Luiz, Km 235 SP-310, BR-13565905 Sao Carlos, SP - Brazil

^[4] STM Sistemas Teste Mat Ltda, Rua Argentina 390-400, BR-13566600 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE; v. 52, n. 10 AUG 2021.
• Web of Science Citations: 0

Abstract

AISI 200LN is a low nickel austenitic stainless steel (SS) in which nitrogen and manganese are used for nickel substitution. It shows excellent mechanical properties at room and cryogenic temperatures, with a lower production cost, if compared to the traditional 300 series SS. In spite of that, the performance of AISI 200 series SS under creep conditions remains largely underexplored in the literature. This study aims to assess the mechanical response of the AISI 201LN alloy when subjected to hot tensile and creep tests. The tensile tests were conducted at room temperature and in the range of 500 degrees C to 800 degrees C, whereas the creep tests were performed under constant load and within the temperature range 600 degrees C to 800 degrees C. Correlations among stress, temperature, secondary creep rate, rupture time, and creep ductility were obtained and results were compared to the literature data for the 300 series of traditional stainless steels. Based on the Zener-Hollomon parameter, constitutive equations were applied to describe the creep behavior of AISI 201LN within the range of stresses and temperatures used. (AU)

• FAPESP's process: 19/07178-6 - Study of the microstructural parameters controlling the twin Induced Plasticity (TWIP) effect in austenitic steels
• Grantee: Andrea Madeira Kliauga
• Support Opportunities: Regular Research Grants