Effect of grain refinement on sensitization of high manganese austenitic stainless steel. (2021)

• Record Type: Journal Article
• Authors: Shukla, Sourabh; Patil, Awanikumar P.; Kawale, Ashlesha P.; Haldkar, Rakesh Kumar; Dahiwale, Ashish; Bansod, Ankur
• Is Part Of: Materials today. Volume 44:Part 1(2021)
• Page Start: 2802
• Page End: 2807
• Publication Date: 2021
• Subjects: Deformation -- Thermal ageing -- Grain size -- Microstructure; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.12.833
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Effect of grain size on degree of sensitization (DOS) was been evaluated in Nickel free steel. Manganese and nitrogen contained alloy is a Ni free austenitic stainless steel (ASS) having type 202 grade. In the present investigation, the deformation of 202 grade analyzed using XRD and microstructural testing. Optical Microstructure of Ni free austenitic stainless steel (ASS) has been done for cold worked samples with thermally aged at 900 °C_6 Hrs. Ni free austenitic stainless steel (ASS) appears to be deformed more rapidly due to its higher stacking fault energy which gave results in rapid transformation from strain induced martensite to austenite in form of recrystallized grains, i.e., it concluded that as cold work percentage increases more rapidly recrystallization occurs. XRD results also indicate that more fraction of martensite formed as percentage of CW increases but as thermal ageing reverted those all martensite to austenite. Double Loop Electro-potentio Reactivation Method (DLEPR) test used for findings of degree of sensitization. So investigation gives the conclusion which suggest that with high deformation at higher temperature and duration gives very less degree of sensitization (DOS).