| LI Bin,DONG Li-hong,WANG Hai-dou,ZHOU Yong-xin,GAO Chong.Research Progress on Corrosion Fatigue of Aerospace Aluminum Alloy[J],50(7):106-118 |
| Research Progress on Corrosion Fatigue of Aerospace Aluminum Alloy |
| Received:July 13, 2020 Revised:December 05, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.07.010 |
| KeyWord:aerospace aluminum alloy corrosion fatigue corrosion mechanism environmental simulation pre-corrosion fatigue alternating corrosion fatigue collaborative/alternating test |
| Author | Institution |
| LI Bin |
School of Materials Sciences and Engineering, Xi’an University of Technology, Xi’an , China;National Key Lab for Remanufacturing, Army Academy of Armored Forces, Beijing , China |
| DONG Li-hong |
National Key Lab for Remanufacturing, Army Academy of Armored Forces, Beijing , China |
| WANG Hai-dou |
National Key Lab for Remanufacturing, Army Academy of Armored Forces, Beijing , China |
| ZHOU Yong-xin |
School of Materials Sciences and Engineering, Xi’an University of Technology, Xi’an , China |
| GAO Chong |
School of Mechanical Engineering, Shenyang University of Technology, Shenyang , China |
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| Abstract: |
| Aluminum alloys are widely used in the aerospace field due to their high specific strength, specific modulus, good workability and welding performance. Corrosion fatigue is one of the important reasons for the failure of aerospace materials. It has attracted wide attention because of its high harmfulness, strong destructiveness and difficulty in predicting in advance. The corrosion fatigue of aluminum alloy has always been a key issue in the study of aircraft calendar life. With the concept of reusable spacecraft, multiple air-to-air round trips and ground repair processes have made corrosion fatigue problems on reusable spacecraft not to be ignored. Overviews the research status of corrosion fatigue of aerospace aluminum alloys in recent years, summarize the mechanism of corrosion fatigue crack initiation and propagation from the perspective of corrosion fatigue mechanism of aviation aluminum alloys, introduces the main laboratory corrosion fatigue test technology from two aspects of corrosion fatigue environment simulation and corrosion environment equivalent. It analyze the effects of material factors, environmental factors and mechanical factors on corrosion fatigue crack growth and life, focusing on the characteristics of fatigue life under the alternate form of corrosion fatigue. It is proposed that corrosion fatigue crack growth, damage evolution and life prediction under the combined influence of multiple factors, as well as the equivalent equivalent of accelerated corrosion environment, and the organic combination of test and simulation are important development directions for aluminum alloy corrosion fatigue in the future. |
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