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| Damage Behaviour of 0Cr16Ni5Mo1 Stainless Steel under Alternating Corrosion and Fatigue Environment |
| Received:November 01, 2023 Revised:November 30, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2023.12.007 |
| KeyWord:fatigue life alternating corrosion and fatigue stainless steel alternation frequency passivation corrosion products |
| Author | Institution |
| ZHANG Tian-yu |
Air Force Engineering University, Xi'an , China |
| ZHANG Teng |
Air Force Engineering University, Xi'an , China |
| WANG Chang-kai |
Air Force Engineering University, Xi'an , China |
| HE Yu-ting |
Air Force Engineering University, Xi'an , China |
| DING Ran |
Unit 94303, Shandong Weifang , China |
| DU Xin |
Unit 94456, Shandong Weihai , China |
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| Abstract: |
| The work aims to study the damage behavior of 0Cr16Ni5Mo1 stainless steel under alternating corrosion and fatigue environment. By carrying out the tests of 0Cr16Ni5Mo1 stainless steel for different times of alternating corrosion and fatigue, the effect the corrosion and fatigue alternation frequency on the fatigue life, surface morphology, etc. was analyzed and the damage mechanism of alternating corrosion and fatigue was clarified. When the corrosion time was constant, the fatigue life of 0Cr16Ni5Mo1 stainless steel specimen increased with the increase of corrosion and fatigue alternation frequency. When the alternation frequency was low, the fatigue fracture site mainly occurred at the corrosion damage on the surface or side of the specimen, and when the alternation frequency was high, the fatigue fracture site also began to appear at the internal defects. The corrosion products attached to the surface of the specimen decreased with the alternation cycle, but with the increase of the alternation frequency, the corrosion products appeared deep in the matrix section. The fatigue life of 0Cr16Ni5Mo1 stainless steel specimen shows an exponential function law growth trend with the increase in the alternation frequency. Under the action of corrosion-fatigue alternation, the surface corrosion damage of 0Cr16Ni5Mo1 stainless steel is mainly in the form of pitting corrosion, cracks mainly occur in the specimen surface defects and corrosion accelerates the process of crack initiation. The increase in the alternation frequency promotes the generation of surface and defects in the passivation film, and corrosion products in the defects of the internal accumulation, so that the specimen life increases. |
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