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SS304的低周疲劳行为、微观结构演变及寿命预测：温度的影响

The Low-Cycle Fatigue Behavior, Microstructure Evolution, and Life Prediction of SS304: Influence of Temperature.

作者信息

Mei Ting, Wang Quanyi, Liu Meng, Jiang Yunqing, Zou Tongfei, Cai Yifan

机构信息

AVIC Guizhou Honglin Aerodynamic Control Technology Co., Ltd., Guiyang 550000, China.

Failure Mechanics and Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, China.

出版信息

Materials (Basel). 2023 Sep 21;16(18):6326. doi: 10.3390/ma16186326.

DOI:10.3390/ma16186326
PMID:37763604
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10532933/
Abstract

To study the fatigue failure and microstructure evolution behavior of SS304, low-cycle fatigue tests are conducted at room temperature (RT), 300 °C, and 650 °C. The results indicate that, because of the influence of the dislocation walls, carbon-containing precipitates, and deformation twins, the cyclic hardening behavior is presented at RT. However, different from the cyclic hardening behavior at RT, the cyclic softening behavior of SS304 can be observed due to the dynamic recovery and recrystallization containing dislocation rearrangement and annihilation at 300 °C and 650 °C. In addition, two fatigue crack initiation modes are observed. At RT, the single fatigue crack initiation mode is observed. At high temperatures, multiple crack initiation modes are presented, resulting from the degradation of material properties. Furthermore, a new fatigue life prediction model considering the temperature is conducted as a reference for industrial applications.

摘要

为研究SS304的疲劳失效及微观结构演变行为，在室温（RT）、300℃和650℃下进行了低周疲劳试验。结果表明，由于位错壁、含碳析出物和形变孪晶的影响，室温下呈现循环硬化行为。然而，与室温下的循环硬化行为不同，由于在300℃和650℃下发生了包含位错重排和湮灭的动态回复与再结晶，SS304在这两个温度下可观察到循环软化行为。此外，观察到两种疲劳裂纹萌生模式。室温下，观察到单一疲劳裂纹萌生模式。在高温下，由于材料性能退化，呈现出多种裂纹萌生模式。此外，建立了一种考虑温度的新疲劳寿命预测模型，为工业应用提供参考。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/b52225d45084/materials-16-06326-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/9bdc55c196c9/materials-16-06326-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/9e183bdd36a7/materials-16-06326-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/4c5fb94ada23/materials-16-06326-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/bfc9fbe711d4/materials-16-06326-g009.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/2d76935abf93/materials-16-06326-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/b52225d45084/materials-16-06326-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/c9c59e212bc3/materials-16-06326-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/8765a4003b4d/materials-16-06326-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/51fa51c77e67/materials-16-06326-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/979c13980aa4/materials-16-06326-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/acdd39ec4e84/materials-16-06326-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/9bdc55c196c9/materials-16-06326-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/9e183bdd36a7/materials-16-06326-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/4c5fb94ada23/materials-16-06326-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/bfc9fbe711d4/materials-16-06326-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/e82e4183a11a/materials-16-06326-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/2d76935abf93/materials-16-06326-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f27/10532933/b52225d45084/materials-16-06326-g012.jpg

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