학술논문
316L 스테인리스 강에서 단 범위 규칙화 반응과 규칙화 처리가 미세조직에 미치는 영향
Effect of Short Range Ordering Reaction and Ordering Treatment on Microstructure in 316L Stainless Steel
Effect of Short Range Ordering Reaction and Ordering Treatment on Microstructure in 316L Stainless Steel
Document Type
Article
Author
Source
대한금속재료학회지 / Korean journal of metals and materials. Mar 05, 2016 54(3):154
Subject
Language
Korean
English
English
ISSN
1738-8228
Abstract
The short range ordering (SRO) reaction is investigated in 316L stainless steel through differential scanning calorimeter (DSC) using thermo-mechanically treated specimens. It is interpreted that the exothermic reaction and the endothermic reaction during DSC analysis are due to the ordering and disordering, respectively. The activation energy for the exothermic reaction is determined to be 234 kJ/mol. This suggests that the exothermic reaction is governed by substitutional diffusion. It supports that the nature of the exothermic reaction is the SRO reaction. The cold work affects the kinetics of SRO significantly and shifts the SRO region from 500-570 ℃ to 200-600 ℃. The exothermic energy due to the SRO reaction increases with the amount of cold work. The fact that the SRO is an unavoidable reaction below 570 ℃ is very important.