원문정보
초록
영어
In this paper, a shot peening was conducted to improve fatigue life by increasing resistance to hydrogen embrittlement of STS316 steel, which is widely used in hydrogen environments. First, considering the efficiency of the shot peening process, an effective Almen intensity was selected and applied to the specimen surface. Second, the specimen was hydrogen embrittled at room temperature (25°C) and high temperature (60°C) using electrochemical hydrogen charging. Third, the mechanical property tests (tensile, hardness, roughness) and 4-points rotational bending fatigue tests of the specimen were performed. All mechanical properties decreased, but the fatigue life of the shot peened specimens improved at the both temperature conditions. Ultimately, the fatigue characteristics against hydrogen embrittlement of STS316 steel, which is used in various industrial fields, are improved through an effective shot peening process, and the effect is believed to be very significant.
목차
1. 서론
2. 관련 이론
2.1 숏피닝 강도 측정
2.2 수소 취화
3. 시험편 및 실험 방법
3.1 시험편
3.2 실험 방법
4. 실험결과 및 고찰
4.1 알멘선도 및 유효 피닝강도 선정
4.2 인장시험결과
4.3 경도 측정 결과
4.4 표면조도 측정결과
4.5 피로시험결과
5. 결론
후기
References