과공석강의 구상화처리에 미치는 Si 첨가의 영향

• Published in: 열처리공학회지 Vol. 26; no. 3; pp. 126 - 131
• Main Authors: 도영수, Young Su Do, 손지하, Je Ha Shon, 박노진, No Jin Park, 박용일, Yong Il Park, 최환, Hwan Choi, 오명훈, Myung Hoon Oh
• Format: Journal Article
• Language: Korean; English
• Published: 한국열처리공학회 30.05.2013
• Subjects: Cementite; Hyper-eutectoid steel; Silicon addition; Spheroidizing annealing; 금속공학; Silicon addition; Spheroidizing annealing; Cementite; Hyper-eutectoid steel
• ISSN: 1225-1070; 2508-4046
• DOI: 10.12656/jksht.2013.26.3.126

In this study, effects of silicon addition on the spheroidizing annealing of hyper-eutectoid steel was investi-gated,Heat treatment at various temperatures in they +θ region was also conducted in order to systematically control the kinetics of undissolved cementite. It was found that amount of Si addition could increase both A1 and Acm transformation temperature by both the JMat Pro evaluation and dilatometric measurement. It was also revealed by the microstrural observation that the volume fraction of retained cementite during heat treatment increased with decreasing temperature as well as increasing Si content. Based on the results obtained, it could be suggested that sphe-roidization at relatively higher temperature above 950℃ could be achieved by small addition of Si. (Receivied March 19, 2013, Revised April 25, 2013; Accepted May 19, 2013)