A comparative study of low cycle fatigue behavior and microstructure of Cr-based steel at room and high temperatures
The effect of temperature on tensile behavior, low cycle fatigue, and microstructure evolution considering the damage mechanisms of Cr-based heat-resisting steel was investigated. The results present that significant monotonic and cyclic softening was observed at both room temperature and 630 °C. Ho...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-10-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127520305347 |
| _version_ | 1819150410450993152 |
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| author | Quanyi Wang Qingyuan Wang Xiufang Gong Tianjian Wang Wei Zhang Lang Li Yongjie Liu Chao He Chong Wang Hong Zhang |
| author_facet | Quanyi Wang Qingyuan Wang Xiufang Gong Tianjian Wang Wei Zhang Lang Li Yongjie Liu Chao He Chong Wang Hong Zhang |
| author_sort | Quanyi Wang |
| collection | DOAJ |
| description | The effect of temperature on tensile behavior, low cycle fatigue, and microstructure evolution considering the damage mechanisms of Cr-based heat-resisting steel was investigated. The results present that significant monotonic and cyclic softening was observed at both room temperature and 630 °C. However, the cyclic softening factor is independent of the strain amplitudes and temperatures. At room temperature, the steady fatigue behavior until 80% fatigue life was presented, by contrast, great changes were offered below 80% fatigue life at 630 °C. this is directly related to the microstructure properties during fatigue tests, where dislocation network, wall, and dynamic recovery were formed, resulting from the dislocation movement, interaction, and annihilation. The density of dislocation and intensity of slip is inversely proportional to the temperature. Besides, a prediction fatigue life model fitted by the quadratic function was established through the hysteresis energy, which can consider the effect of temperature on the different fitting parameters and offer the method to optimize the fatigue behavior of Cr-based steel at different temperatures |
| first_indexed | 2024-12-22T14:17:04Z |
| format | Article |
| id | doaj.art-a4812fa76f5e4cea90ff6a0521e86140 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-22T14:17:04Z |
| publishDate | 2020-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-a4812fa76f5e4cea90ff6a0521e861402022-12-21T18:23:04ZengElsevierMaterials & Design0264-12752020-10-01195109000A comparative study of low cycle fatigue behavior and microstructure of Cr-based steel at room and high temperaturesQuanyi Wang0Qingyuan Wang1Xiufang Gong2Tianjian Wang3Wei Zhang4Lang Li5Yongjie Liu6Chao He7Chong Wang8Hong Zhang9School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, ChinaSchool of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China; Failure Mechanics and Engineering Disaster Prevention, Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Key Laboratory of Deep Underground Science and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, China; School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, ChinaState Key Laboratory of Long-Life High Temperature Materials, DongFang Turbine Co., LTD, Deyang 618000, ChinaState Key Laboratory of Long-Life High Temperature Materials, DongFang Turbine Co., LTD, Deyang 618000, ChinaDongFang Boiler Group Co., Ltd, ZiGong 643001, ChinaFailure Mechanics and Engineering Disaster Prevention, Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Key Laboratory of Deep Underground Science and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention, Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Key Laboratory of Deep Underground Science and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention, Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Key Laboratory of Deep Underground Science and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention, Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Key Laboratory of Deep Underground Science and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention, Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Key Laboratory of Deep Underground Science and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, China; Corresponding author at: Failure Mechanics and Engineering Disaster Prevention, Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, China.The effect of temperature on tensile behavior, low cycle fatigue, and microstructure evolution considering the damage mechanisms of Cr-based heat-resisting steel was investigated. The results present that significant monotonic and cyclic softening was observed at both room temperature and 630 °C. However, the cyclic softening factor is independent of the strain amplitudes and temperatures. At room temperature, the steady fatigue behavior until 80% fatigue life was presented, by contrast, great changes were offered below 80% fatigue life at 630 °C. this is directly related to the microstructure properties during fatigue tests, where dislocation network, wall, and dynamic recovery were formed, resulting from the dislocation movement, interaction, and annihilation. The density of dislocation and intensity of slip is inversely proportional to the temperature. Besides, a prediction fatigue life model fitted by the quadratic function was established through the hysteresis energy, which can consider the effect of temperature on the different fitting parameters and offer the method to optimize the fatigue behavior of Cr-based steel at different temperatureshttp://www.sciencedirect.com/science/article/pii/S0264127520305347Low cycle fatigueCyclic behaviorHysteresis loopsFatigue lifeCr-based heat-resisting steelMicrostructure |
| spellingShingle | Quanyi Wang Qingyuan Wang Xiufang Gong Tianjian Wang Wei Zhang Lang Li Yongjie Liu Chao He Chong Wang Hong Zhang A comparative study of low cycle fatigue behavior and microstructure of Cr-based steel at room and high temperatures Materials & Design Low cycle fatigue Cyclic behavior Hysteresis loops Fatigue life Cr-based heat-resisting steel Microstructure |
| title | A comparative study of low cycle fatigue behavior and microstructure of Cr-based steel at room and high temperatures |
| title_full | A comparative study of low cycle fatigue behavior and microstructure of Cr-based steel at room and high temperatures |
| title_fullStr | A comparative study of low cycle fatigue behavior and microstructure of Cr-based steel at room and high temperatures |
| title_full_unstemmed | A comparative study of low cycle fatigue behavior and microstructure of Cr-based steel at room and high temperatures |
| title_short | A comparative study of low cycle fatigue behavior and microstructure of Cr-based steel at room and high temperatures |
| title_sort | comparative study of low cycle fatigue behavior and microstructure of cr based steel at room and high temperatures |
| topic | Low cycle fatigue Cyclic behavior Hysteresis loops Fatigue life Cr-based heat-resisting steel Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S0264127520305347 |
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