* 본 문서는 배포용으로 복사 및 편집이 불가합니다.
서지정보
ㆍ발행기관 : 한국재료학회
ㆍ수록지정보 : 한국재료학회지 / 27권 / 12호
ㆍ저자명 : 최욱진, 조희재, 이수열, 윤경민, 민경환, 임남형
ㆍ저자명 : 최욱진, 조희재, 이수열, 윤경민, 민경환, 임남형
목차
1. 서 론2. 실험 방법
2.1 실험 재료
2.2 미세조직 분석
2.3 기계적 물성 분석
3. 결 과
3.1 미세조직 및 결정구조
3.2 기계적 물성
4. 고 찰
5. 결 론
Acknowledgement
References
영어 초록
The use of continuous welded rail is increasing because of its many advantages, including vibration reduction, enhanced driving stability, and maintenance cost savings. In this work, two different types of continuous welded rails were examined to determine the influence of repeated wheel-rail contact on the crystal structure, microstructure and mechanical properties of the rails. The crystal structure was determined by x-ray diffraction, and the microstructure was examined using optical microscopy and scanning electron microscopy. Tensile and microhardness tests were conducted to examine the mechanical behaviors of prepared specimens taken from different positions in the cross section of both newly manufactured rail and worn rail. Analysis revealed that both the new and worn rail had a mixed microstructure consisting of ferrite and pearlite. The specimens from the top position of each rail exhibited decreased lamella spacing of the pearlite and increased yield strength, ultimate tensile strength and hardness, as compared with those from other positions of the rail. It is thought that the enhanced mechanical property on the top position of the worn rail might be explained by a mixed effect resulting from a directional microstructure, the decreased lamella spacing of pearlite, and work hardening by the repeated wheel-rail contact stress.참고 자료
없음"한국재료학회지"의 다른 논문
- SiAlON 원료분말제조를 위한 분무건조 과립분말의 형상과 크기에 미치는 공정변수효과6페이지
- Yttirum Oxyfluoride 원료의 고상합성 및 서스펜션 플라즈마 스프레이 코팅 응용6페이지
- Reliable and High Spatial Resolution Method to Identify..5페이지
- Surface Analysis of Plasma Pretreated Sapphire Substrat..6페이지
- Characterization of Highly Conducting ZnMgBeGaO/Ag/ZnMg..4페이지
- 단결정 압축 변형 거동의 변형구배 결정소성 유한요소해석9페이지
- 일축 압축하중 하 다공성 폴리우레탄폼의 재료비선형 거동 및 미세구조 변화7페이지
- 인산형 연료전지 분리판용 천연흑연-불소수지계 복합재료의 흑연입도에 따른 전기비저항 변화8페이지
- Electrorefining of CuZr Alloy Using Ba2ZrF8-LiF Electro..7페이지
- Polystyrene 입자 정렬을 이용한 성게 구조 ZnO 나노막대 가스 센서의 특성6페이지