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| Reliability Evaluation of Aluminum Alloy under High Temperature Based on Low CycleFatigue Crack Growth |
| Received:April 26, 2013 Revised:September 01, 2013 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2013.05.030 |
| KeyWord:aluminum alloy high temperature reliability fatigue crack growth |
| Author | Institution |
| LI Xu-dong |
Reliability Evaluation of Aluminum Alloy under High Temperature Based on Low CycleFatigue Crack GrowthQingdao Campus of Naval Aeronautical Academy，Qingdao，China |
| ZHANG Lian-feng |
Reliability Evaluation of Aluminum Alloy under High Temperature Based on Low CycleFatigue Crack GrowthQingdao Campus of Naval Aeronautical Academy，Qingdao，China |
| ZHU Wu-feng |
Reliability Evaluation of Aluminum Alloy under High Temperature Based on Low CycleFatigue Crack GrowthQingdao Campus of Naval Aeronautical Academy，Qingdao，China |
| DING Wen-yong |
Reliability Evaluation of Aluminum Alloy under High Temperature Based on Low CycleFatigue Crack GrowthQingdao Campus of Naval Aeronautical Academy，Qingdao，China |
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| Abstract: |
| Fatigue crack growth rate of AA6151-T6in high temperature was tested. The fatigue crack growth rate formula was obtained based on reliability theory. The result showed that fatigue crack growth of AA6151-T6exists threshold value in high temperature, which decreases with temperature increasing. The purpose was to provide reference for safe life prediction of AA 6151-T6component.The present thesis made a research on the fatigue crack growth rate of AA6151-T6subjected to various elevated, and proposed a reliability based formula to evaluate FCG, which provided the basis of 6151-T6 aluminum alloy component safe life prediction. The method demonstrates the existence of fatigue crack growth threshold value of 6151-T6 aluminum alloy subjected to elevated temperature, which decreases with temperature increasing. |
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