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http://dx.doi.org/10.3744/SNAK.2004.41.6.065

Developed Inherent Strain Method Considering Phase Transformation of Mild Steel in Line Heating  

Ha, Yun-Sok (Seoul National University, Graduate School)
Jang, Chang-Doo (Seoul National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.41, no.6, 2004 , pp. 65-74 More about this Journal
Abstract
The inherent strain method is known to be very efficient in predicting the deformation of steel plate by line heating. However, in the actual line heating process in shipyard, the rapid quenching changes the phase of steel. In this study, In order to consider additional effects under phase transformation, inherent strain regions were assumed to expand. Also, when calculating inherent strain, material properties of steel in heating and cooling are applied differently considering phase transformation. In this process, a new method which can reflect thermal volume expansion of martensite is suggested.8y the suggested method, it was possible to predict the plate deformations by line heating more precisely.
Keywords
Inherent strain; Line heating; Phase transformation; Water cooling; Coefficient of thermal expansion; Weaving heating;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 고대은, 장창두, 서승일, 이해우, 1999, '곡가공 자동화 시스템을 위한 선상가열에 의한 변형의 실시간 시뮬레이션,' 대한조선학회 논문집, 제36권, 제 4호, pp. 116-127
2 장경복, 2001, 마르텐사이트 변태를 고려한 용접 잔류응력 및 아크-스폿 용접 구조물의 정밀용접 열변형 해석, 부산대학교 공학박사 학위논문
3 장창두, 고대은, 김병일, 박정웅, 2001(a), '열간가공에 의한 판의 변형특성에 관한 실험적 연구,' 대한조선학회 논문집, 제 38권, 제 2호, pp. 62-70   과학기술학회마을
4 ASTM Designation, 1963, Estimating the Average Grain Size of Metals, American Society for testing and Materials, Philadelphia, E 112-63
5 Itsuo O. and Takao A., 1987, Fusion and Solidification/ Removal Processing, Corona Publishing
6 Koistinen, D. P. and Marburger, R. E., 1959, 'A General Equation Prescribing the Extent of the Austenite-Martensite Transformation in Pure Iron-Carbon Alloys and Plain Carbon Steels,' Acta Met, Vol 7, pp. 59-60
7 Marder AR and Krauss G., 1967, 'The Morphology of Martensite in Iron Carbon Alloys' Trans ASM 60:651-660
8 Marder AR and Krauss G., 1970, 'The Effects of Morphology on the strength of Lath Martensite', Proc of Second Int Conf on the Strength of Metals and Alloys, Vol III, American Society for Metals, Metals Park, Oh pp 822-823
9 Melloy, G. F., 1968, Austenite Grain Size Its Control and Effects, Metals Engineering Institute, American Society for Metals, Metals Park, Oh
10 Payson, P. and Savage, C. H., 1944, 'Martensite Reactions in Alloy Steels,' Trans ASM, Vol 33, pp. 261-275
11 장창두, 하윤석, 고대은, 문성춘, 2002, '선상가열 판변형 해석을 위한 고유변형도 영역의 결정법,' 대한조선학회 논문집, 제 39권, 제 1호, pp. 82-89   과학기술학회마을
12 장창두, 고대은, 문성춘, 서용록, 2001(b), '삼각가열에 의한 판 변형의 시뮬레이션,' 대한조선학회 논문집, 제 38권, 제 4호, pp. 66-74   과학기술학회마을
13 장창두, 서승일, 고대은, 1997, '간이 열탄소성 해석을 이용한 선상가열에 의한 판의 변형 예측에 관한 연구,' 대한조선학회 논문집, 제 34권, 제 3호, pp. 104-112
14 장창두, 이창현, 2000, '선체 블록의 용접변형예측 및 제어를 위한 연구,' 대한조선학회 논문집, 제 37권, 제 2호, pp. 127-136
15 Andrews, K. W., 1965, 'Empirical Formulae for the Calculation of Some transformation Temperatures,' JISI, Vol. 203, pp. 721-727
16 ASM International, 1993, ASM Handbook (v.4. Heat treating), The Materials Information Society
17 Wayman, C. M., 1964, Introduction to the Crystallography of Martensite Transformations, Macmillan, New York
18 Satoh, K., Matsui, S., Terai, K. and Iwamura, Y., 1969, 'Water-cooling Effect on Angular Distortion caused by the Process of Line Heating in Steel Plates,' J. of the Society of Naval Architects of Japan, Vol. 126, pp. 445-458
19 Satoh, K. and Terasaki, T., 1976, 'Effect of Welding Conditions on Welding Deformations in Welded Structure Materials,' J. of the Japanese Welding Society, Vol. 45, No. 4. pp. 302-308   DOI   ScienceOn
20 Swarr, T. E. and Krauss, G., 1976, 'The Effect of Structure on the Deformation of As-Quenched and Tempered Martensite in an Fe-O.2% C Alloy,' Met Trans A, Vol 7A, pp. 41-48