Evaluation of Fatigue Strength of Similar and Dissimilar Welded Joints of Modified 9Cr–1Mo SteelSource: Journal of Pressure Vessel Technology:;2016:;volume( 138 ):;issue: 001::page 11402Author:Takaya, Shigeru
DOI: 10.1115/1.4030932Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an evaluation method for the fatigue strength of similar and dissimilar welded joints of modified 9Cr–1Mo steel, which is a candidate structural material for demonstration of fastbreeder reactor being developed in Japan. The discontinuity of the mechanical properties across a welded joint causes a nonhomogeneous strain distribution, and this effect should be considered in the evaluation of the fatigue strength of welded joints. In this study, a “twoelement model,†which comprises base metal and welded metal, was employed. First, the strain ranges of each element are calculated, and second, the fatigue lives of each element are evaluated. Finally, the shorter fatigue life is selected as the fatigue life of the welded joint. The failure position can be also estimated by this model. The evaluation results were compared with experimental data obtained at elevated temperature, and the results were in good agreement.
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| contributor author | Takaya, Shigeru | |
| date accessioned | 2017-05-09T01:32:35Z | |
| date available | 2017-05-09T01:32:35Z | |
| date issued | 2016 | |
| identifier issn | 0094-9930 | |
| identifier other | pvt_138_01_011402.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/162310 | |
| description abstract | This paper presents an evaluation method for the fatigue strength of similar and dissimilar welded joints of modified 9Cr–1Mo steel, which is a candidate structural material for demonstration of fastbreeder reactor being developed in Japan. The discontinuity of the mechanical properties across a welded joint causes a nonhomogeneous strain distribution, and this effect should be considered in the evaluation of the fatigue strength of welded joints. In this study, a “twoelement model,†which comprises base metal and welded metal, was employed. First, the strain ranges of each element are calculated, and second, the fatigue lives of each element are evaluated. Finally, the shorter fatigue life is selected as the fatigue life of the welded joint. The failure position can be also estimated by this model. The evaluation results were compared with experimental data obtained at elevated temperature, and the results were in good agreement. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Evaluation of Fatigue Strength of Similar and Dissimilar Welded Joints of Modified 9Cr–1Mo Steel | |
| type | Journal Paper | |
| journal volume | 138 | |
| journal issue | 1 | |
| journal title | Journal of Pressure Vessel Technology | |
| identifier doi | 10.1115/1.4030932 | |
| journal fristpage | 11402 | |
| journal lastpage | 11402 | |
| identifier eissn | 1528-8978 | |
| tree | Journal of Pressure Vessel Technology:;2016:;volume( 138 ):;issue: 001 | |
| contenttype | Fulltext |