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논문 기본 정보

자료유형
학술저널
저자정보
남기우 (부경대학교) 전현 (포항제철공업고등학교) 이기식 (POSCO) 탁영준 (POSCO)
저널정보
한국동력기계공학회 동력시스템공학회지 동력시스템공학회지 제25권 제3호
발행연도
2021.6
수록면
15 - 22 (8page)
DOI
10.9726/kspse.2021.25.3.015

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In this study, high-cost Cr and Ni components of 202 austenitic stainless steel were reduced, low-cost Mn was added, and the amount of martensite and mechanical properties were evaluated according to rolling temperature and rolling degree. In addition, the acoustic wave generated by internal deformation during tension test was detected, and the dominant frequency according to the amount of martensite was investigated by wavelet analysis. Parts of the austenite were transformed into α′ -martensite by rolling. More martensite was generated as the rolling degree was increased, and more martensite was generated as the rolling temperature decreased in the same rolling degree. The amount of martensite rapidly increased up to a rolling degree of 33%, and then gradually increased thereafter. In particular, the amount of martensite at rolling temperature of -196℃ was similar after the rolling degree of 33%. Vickers hardness and tensile (yield) strength increased as the rolling temperature decreased and the rolling degree increased. The elongation decreased rapidly. The dominant frequency decreased after increasing as the rolling degree increased at each rolling temperature, and the highest value was shown at 33% of the rolling degree.

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Abstract
1. 서론
2. 재료 및 실험방법
3. 결과 및 고찰
4. 결론
References

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