지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.12
- 수록면
- 599 - 605 (7page)
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초록· 키워드
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In this work, we investigate the microstructure and mechanical properties in friction welded joint of V-micro- alloyed non-quenched and tempered steel. To this end, NQT steel was bonded with S45C high carbon steel by friction welding. The microstructures of welded joint were observed by optical microscopy (OM) and scanning electron microscopy (SEM) analyses, and their effective grain size were measured by electron backscattered diffraction (EBSD) analyses. Welded joint consists of bond line, thermomechanically affected zone (TMAZ), and heat-affected zone (HAZ). The TMAZ and HAZ of S45C high carbon steel are composed of grain boundary ferrite and pearlite microstructure, and the TMAZ then has larger grain size and higher fraction of pearlite compared to the HAZ. The TMAZ and HAZ of NQT steel are composed of grain boundary ferrite, acicular ferrite, and bainite microstructure, and the grain size of the HAZ is then smaller than the TMAZ. The mechanical properties of welded joint were evaluated by tensile, Charpy U-notch impact, and Vickers hardness tests. In both NQT steel and S45C high carbon steel, the hardness decreases with increase in the distance from the bond line by increasing the fraction of ferrite.
목차
Abstract
1. 서론
2. 실험 방법
3. 실험 결과 및 고찰
4. 결론
References
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