DEFORMATION-MECHANISM-BASED MODELING OF CREEP BEHAVIOR OF P91 STEEL
Creep behavior of P91 steel was studied by using a constitutive model based on deformation mechanism. Combined with the experimental data, it was found that the minimum creep rate has an obvious exponential relationship with the applied stress during creep, which was closely related to different def...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2022-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.01.027 |
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| _version_ | 1841535909984468992 |
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| author | LI Bo LIU XinBao ZHU Lin QUAN Chen WANG Ni |
| author_facet | LI Bo LIU XinBao ZHU Lin QUAN Chen WANG Ni |
| author_sort | LI Bo |
| collection | DOAJ |
| description | Creep behavior of P91 steel was studied by using a constitutive model based on deformation mechanism. Combined with the experimental data, it was found that the minimum creep rate has an obvious exponential relationship with the applied stress during creep, which was closely related to different deformation mechanisms. By introducing dislocation slip, dislocation climb and grain boundary slip into the traditional Norton power law equation, the creep behavior of P91 steel under the conditions of 580℃～620℃ and 135 MPa～200 MPa stress was simulated and analyzed. The results show that the creep curve of P91 steel can be well described by using this model, including the initial stage, steady stage and acceleration stage of creep. In addition, the results of model calculation and SEM analysis further show that the creep fracture form of P91 steel is transgranular fracture within the current temperature stress range. |
| format | Article |
| id | doaj-art-03cb9883f73947449e595b317db20d5d |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2022-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-03cb9883f73947449e595b317db20d5d2025-01-15T02:24:54ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692022-01-014419820229910438DEFORMATION-MECHANISM-BASED MODELING OF CREEP BEHAVIOR OF P91 STEELLI BoLIU XinBaoZHU LinQUAN ChenWANG NiCreep behavior of P91 steel was studied by using a constitutive model based on deformation mechanism. Combined with the experimental data, it was found that the minimum creep rate has an obvious exponential relationship with the applied stress during creep, which was closely related to different deformation mechanisms. By introducing dislocation slip, dislocation climb and grain boundary slip into the traditional Norton power law equation, the creep behavior of P91 steel under the conditions of 580℃～620℃ and 135 MPa～200 MPa stress was simulated and analyzed. The results show that the creep curve of P91 steel can be well described by using this model, including the initial stage, steady stage and acceleration stage of creep. In addition, the results of model calculation and SEM analysis further show that the creep fracture form of P91 steel is transgranular fracture within the current temperature stress range.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.01.027Deformation mechanismTrue stressCreep behaviorFractography |
| spellingShingle | LI Bo LIU XinBao ZHU Lin QUAN Chen WANG Ni DEFORMATION-MECHANISM-BASED MODELING OF CREEP BEHAVIOR OF P91 STEEL Jixie qiangdu Deformation mechanism True stress Creep behavior Fractography |
| title | DEFORMATION-MECHANISM-BASED MODELING OF CREEP BEHAVIOR OF P91 STEEL |
| title_full | DEFORMATION-MECHANISM-BASED MODELING OF CREEP BEHAVIOR OF P91 STEEL |
| title_fullStr | DEFORMATION-MECHANISM-BASED MODELING OF CREEP BEHAVIOR OF P91 STEEL |
| title_full_unstemmed | DEFORMATION-MECHANISM-BASED MODELING OF CREEP BEHAVIOR OF P91 STEEL |
| title_short | DEFORMATION-MECHANISM-BASED MODELING OF CREEP BEHAVIOR OF P91 STEEL |
| title_sort | deformation mechanism based modeling of creep behavior of p91 steel |
| topic | Deformation mechanism True stress Creep behavior Fractography |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.01.027 |
| work_keys_str_mv | AT libo deformationmechanismbasedmodelingofcreepbehaviorofp91steel AT liuxinbao deformationmechanismbasedmodelingofcreepbehaviorofp91steel AT zhulin deformationmechanismbasedmodelingofcreepbehaviorofp91steel AT quanchen deformationmechanismbasedmodelingofcreepbehaviorofp91steel AT wangni deformationmechanismbasedmodelingofcreepbehaviorofp91steel |