Micro-Defects-Related Low Cycle Fatigue Mechanical Model of the Nuclear-Grade S30408 Stainless Steel
Continuous and interrupted low cycle fatigue tests were conducted on nuclear-grade S30408 stainless steel under different stress conditions at room temperature. Vickers hardness testing and microstructure characterization were performed on the fatigue samples with different fatigue states. The evolu...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/15/1/71 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841549110235103232 |
|---|---|
| author | Huiping Liu Mingkun Xiao Jiannan Hao Xinjie Ma Ni Jiang Qing Peng Chao Ye |
| author_facet | Huiping Liu Mingkun Xiao Jiannan Hao Xinjie Ma Ni Jiang Qing Peng Chao Ye |
| author_sort | Huiping Liu |
| collection | DOAJ |
| description | Continuous and interrupted low cycle fatigue tests were conducted on nuclear-grade S30408 stainless steel under different stress conditions at room temperature. Vickers hardness testing and microstructure characterization were performed on the fatigue samples with different fatigue states. The evolutionary mechanism of the microstructure defects in materials under fatigue cyclic loading was discussed. The traditional Basquin formula was used to predict the fatigue life of these fatigue samples. At the same time, a quantitative mechanical model related to the characteristic micro-defects parameter KAM and the Vickers hardness (H<sub>v</sub>) was established for the S30408 stainless steel during the low cycle fatigue damage process, and the prediction accuracy of the Vickers hardness is greater than 90%, which is significant and useful for the fatigue life prediction of the 304 stainless steels used in nuclear systems and the safe operation of the reactors. |
| format | Article |
| id | doaj-art-e7ad59f17a4148dc91d38a0c0480af7e |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-e7ad59f17a4148dc91d38a0c0480af7e2025-01-10T13:19:25ZengMDPI AGNanomaterials2079-49912025-01-011517110.3390/nano15010071Micro-Defects-Related Low Cycle Fatigue Mechanical Model of the Nuclear-Grade S30408 Stainless SteelHuiping Liu0Mingkun Xiao1Jiannan Hao2Xinjie Ma3Ni Jiang4Qing Peng5Chao Ye6Institute of Clean Energy, Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang 215400, ChinaInstitute of Clean Energy, Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang 215400, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Clean Energy, Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang 215400, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Clean Energy, Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang 215400, ChinaContinuous and interrupted low cycle fatigue tests were conducted on nuclear-grade S30408 stainless steel under different stress conditions at room temperature. Vickers hardness testing and microstructure characterization were performed on the fatigue samples with different fatigue states. The evolutionary mechanism of the microstructure defects in materials under fatigue cyclic loading was discussed. The traditional Basquin formula was used to predict the fatigue life of these fatigue samples. At the same time, a quantitative mechanical model related to the characteristic micro-defects parameter KAM and the Vickers hardness (H<sub>v</sub>) was established for the S30408 stainless steel during the low cycle fatigue damage process, and the prediction accuracy of the Vickers hardness is greater than 90%, which is significant and useful for the fatigue life prediction of the 304 stainless steels used in nuclear systems and the safe operation of the reactors.https://www.mdpi.com/2079-4991/15/1/71S304 stainless steellow cycle fatiguemechanical modelcharacteristic defects |
| spellingShingle | Huiping Liu Mingkun Xiao Jiannan Hao Xinjie Ma Ni Jiang Qing Peng Chao Ye Micro-Defects-Related Low Cycle Fatigue Mechanical Model of the Nuclear-Grade S30408 Stainless Steel Nanomaterials S304 stainless steel low cycle fatigue mechanical model characteristic defects |
| title | Micro-Defects-Related Low Cycle Fatigue Mechanical Model of the Nuclear-Grade S30408 Stainless Steel |
| title_full | Micro-Defects-Related Low Cycle Fatigue Mechanical Model of the Nuclear-Grade S30408 Stainless Steel |
| title_fullStr | Micro-Defects-Related Low Cycle Fatigue Mechanical Model of the Nuclear-Grade S30408 Stainless Steel |
| title_full_unstemmed | Micro-Defects-Related Low Cycle Fatigue Mechanical Model of the Nuclear-Grade S30408 Stainless Steel |
| title_short | Micro-Defects-Related Low Cycle Fatigue Mechanical Model of the Nuclear-Grade S30408 Stainless Steel |
| title_sort | micro defects related low cycle fatigue mechanical model of the nuclear grade s30408 stainless steel |
| topic | S304 stainless steel low cycle fatigue mechanical model characteristic defects |
| url | https://www.mdpi.com/2079-4991/15/1/71 |
| work_keys_str_mv | AT huipingliu microdefectsrelatedlowcyclefatiguemechanicalmodelofthenucleargrades30408stainlesssteel AT mingkunxiao microdefectsrelatedlowcyclefatiguemechanicalmodelofthenucleargrades30408stainlesssteel AT jiannanhao microdefectsrelatedlowcyclefatiguemechanicalmodelofthenucleargrades30408stainlesssteel AT xinjiema microdefectsrelatedlowcyclefatiguemechanicalmodelofthenucleargrades30408stainlesssteel AT nijiang microdefectsrelatedlowcyclefatiguemechanicalmodelofthenucleargrades30408stainlesssteel AT qingpeng microdefectsrelatedlowcyclefatiguemechanicalmodelofthenucleargrades30408stainlesssteel AT chaoye microdefectsrelatedlowcyclefatiguemechanicalmodelofthenucleargrades30408stainlesssteel |