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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
- 2011.1
- 수록면
- 115 - 122 (8page)
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초록· 키워드
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The size of hydrogen molecule is not so small as to invade into the lattice of material, and therefore,hydrogen invades into the material as atom. Hydrogen movement is done by diffusion or dislocation movement in the near crack tip or plastic deformation. Hydrogen appeared to have many effects on the mechanical properties of the Cr-Mo steel alloys. The materials for this study are 1.25Cr-0.5Mo and 2.25Cr-1Mo steels used at high temperature and pressure. The hydrogen amount obtained by theoretical calculation was almost same with the result solved by finite element analysis. The distribution of hydrogen concentration and average concentration was calculated for a flat specimen. Also, finite element analysis was employed to simulate the redistribution of hydrogen due to stress gradient. The calculation of hydrogen concentration diffused into the material by finite element method will provide the basis for the prediction of delayed fracture of notched specimen. The distribution of hydrogen concentration invaded into the smooth and notched specimen was obtained by finite element analysis. The hydrogen amount is much in smooth specimen and tends to concentrate in the vicinity of surface. Hydrogen embrittlement susceptibility of notched specimen after hydrogen charging is more remarkable than that of smooth specimen.
목차
등록된 정보가 없습니다.
참고문헌 (13)
참고문헌 신청
/ 1995 / Standard Test Methods for Tension Testing of Metallic Materials [Metric] / ASTM E8M-95a : 77 ~ 97
De Vries / 2007 / Safe operation of natural gas appliances fueled with hydrogen/natural gas mixtures(progress obtained in the naturally-project) / Int. conference on Hydrogen
J. T. Kim / 1995 / Microstructures and Mechanical Properties of Heavy Wall 2¼Cr-1Mo Forging Steel for Hydrogenation Vessel / Proc. of the Ninth Conference on Mechanical Behaviors
J. Toribio / 2000 / Numerical Modelling of Hydrogen Embrittlement of Cylindrical Bars with Residual Stress Fields / Journal of Strain Analysis 35 (3) : 189 ~ 203
Kota Murakami / 2006 / Substitution of high-pressure charge by electrolysis charge and hydrogen environment embrittlement susceptibilities for Inconel 625 and sus 316L / 2006 ASME
De Vries / 2007 / Safe operation of natural gas appliances fueled with hydrogen/natural gas mixtures(progress obtained in the naturally-project) / Int. conference on Hydrogen
J. T. Kim / 1995 / Microstructures and Mechanical Properties of Heavy Wall 2¼Cr-1Mo Forging Steel for Hydrogenation Vessel / Proc. of the Ninth Conference on Mechanical Behaviors
J. Toribio / 2000 / Numerical Modelling of Hydrogen Embrittlement of Cylindrical Bars with Residual Stress Fields / Journal of Strain Analysis 35 (3) : 189 ~ 203
Kota Murakami / 2006 / Substitution of high-pressure charge by electrolysis charge and hydrogen environment embrittlement susceptibilities for Inconel 625 and sus 316L / 2006 ASME
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