{"title":"Cr-Mo钢焦炭筒的热疲劳损伤行为及变形机理","authors":"Zhibing Lu, X. Chen, Z. Fan, J. Dong","doi":"10.1080/09603409.2022.2132720","DOIUrl":null,"url":null,"abstract":"ABSTRACT Damage behaviour and deformation mechanism of SA387Gr11CL2 (1.25Cr-0.5Mo) low alloy steel for coke drum in the thermomechanical fatigue regime are investigated. The experimental results indicate that a main macroscopic crack is detected in the gauge section of each testing specimen. Multiple crack initiation sources are observed in the fracture surface. There are a great deal of secondary cracks in the crack propagation region of the fracture surface. Longitudinal-section microcrack initiates on the specimen surface and its propagation path is predominantly transgranular. When the crack propagation arrives at the threshold with the cyclic number increase, crack bifurcation is obviously observed. Fatigue is the dominant damage of SA387Gr11CL2 low alloy steel under the thermomechanical fatigue loading. The dominant deformation mechanism of SA387Gr11CL2 low alloy steel during thermomechanical fatigue cycle is wavy slip of dislocations. The types and morphologies of carbides in SA387Gr11CL2 low alloy steel are not changed after plastic deformation. Graphical abstract","PeriodicalId":49877,"journal":{"name":"Materials at High Temperatures","volume":"44 1","pages":"24 - 35"},"PeriodicalIF":1.0000,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thermomechanical fatigue damage behavior and deformation mechanism of coke drum with Cr-Mo steel\",\"authors\":\"Zhibing Lu, X. Chen, Z. Fan, J. Dong\",\"doi\":\"10.1080/09603409.2022.2132720\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"ABSTRACT Damage behaviour and deformation mechanism of SA387Gr11CL2 (1.25Cr-0.5Mo) low alloy steel for coke drum in the thermomechanical fatigue regime are investigated. The experimental results indicate that a main macroscopic crack is detected in the gauge section of each testing specimen. Multiple crack initiation sources are observed in the fracture surface. There are a great deal of secondary cracks in the crack propagation region of the fracture surface. Longitudinal-section microcrack initiates on the specimen surface and its propagation path is predominantly transgranular. When the crack propagation arrives at the threshold with the cyclic number increase, crack bifurcation is obviously observed. Fatigue is the dominant damage of SA387Gr11CL2 low alloy steel under the thermomechanical fatigue loading. The dominant deformation mechanism of SA387Gr11CL2 low alloy steel during thermomechanical fatigue cycle is wavy slip of dislocations. The types and morphologies of carbides in SA387Gr11CL2 low alloy steel are not changed after plastic deformation. Graphical abstract\",\"PeriodicalId\":49877,\"journal\":{\"name\":\"Materials at High Temperatures\",\"volume\":\"44 1\",\"pages\":\"24 - 35\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2022-10-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials at High Temperatures\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1080/09603409.2022.2132720\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials at High Temperatures","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/09603409.2022.2132720","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Thermomechanical fatigue damage behavior and deformation mechanism of coke drum with Cr-Mo steel
ABSTRACT Damage behaviour and deformation mechanism of SA387Gr11CL2 (1.25Cr-0.5Mo) low alloy steel for coke drum in the thermomechanical fatigue regime are investigated. The experimental results indicate that a main macroscopic crack is detected in the gauge section of each testing specimen. Multiple crack initiation sources are observed in the fracture surface. There are a great deal of secondary cracks in the crack propagation region of the fracture surface. Longitudinal-section microcrack initiates on the specimen surface and its propagation path is predominantly transgranular. When the crack propagation arrives at the threshold with the cyclic number increase, crack bifurcation is obviously observed. Fatigue is the dominant damage of SA387Gr11CL2 low alloy steel under the thermomechanical fatigue loading. The dominant deformation mechanism of SA387Gr11CL2 low alloy steel during thermomechanical fatigue cycle is wavy slip of dislocations. The types and morphologies of carbides in SA387Gr11CL2 low alloy steel are not changed after plastic deformation. Graphical abstract
期刊介绍：
Materials at High Temperatures welcomes contributions relating to high temperature applications in the energy generation, aerospace, chemical and process industries. The effects of high temperatures and extreme environments on the corrosion and oxidation, fatigue, creep, strength and wear of metallic alloys, ceramics, intermetallics, and refractory and composite materials relative to these industries are covered.
Papers on the modelling of behaviour and life prediction are also welcome, provided these are validated by experimental data and explicitly linked to actual or potential applications. Contributions addressing the needs of designers and engineers (e.g. standards and codes of practice) relative to the areas of interest of this journal also fall within the scope. The term ''high temperatures'' refers to the subsequent temperatures of application and not, for example, to those of processing itself.
Materials at High Temperatures publishes regular thematic issues on topics of current interest. Proposals for issues are welcomed; please contact one of the Editors with details.
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