CREEP DAMAGE CONSTITUTIVE MODEL OF FE-CR-NI BASED AUSTENITIC STAINLESS STEEL
Considering the effect of carbide coarsening and void nucleation and growth on the creep damage of Fe-Cr-Ni based austenitic stainless steel, a new creep damage constitutive model was established based on the hyperbolic sinh function, and material parameter optimization procedure of the model was al...
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| Main Authors: | , , , , |
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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.1001.9669.2022.05.026 |
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| author | GUO XiaoFeng LIU BenXin NAN NingNing GONG JianMing DONG ZhiMing |
| author_facet | GUO XiaoFeng LIU BenXin NAN NingNing GONG JianMing DONG ZhiMing |
| author_sort | GUO XiaoFeng |
| collection | DOAJ |
| description | Considering the effect of carbide coarsening and void nucleation and growth on the creep damage of Fe-Cr-Ni based austenitic stainless steel, a new creep damage constitutive model was established based on the hyperbolic sinh function, and material parameter optimization procedure of the model was also developed. In addition, a comparative assessment of extrapolated failure times for 3 creep damage models was undertaken for the standard uniaxial round-bar specimen using finite element software.The results show that the proposed constitutive model is capable to reflect the creep behavior of the material under different stress levels at 890 ℃. Compared with the failure time predicted by the widely used power law model（Kachanov-Robotnov model and Liu-Murakami model）, the prediction results of the current model can reflect the nonlinear relationship between stress and creep rupture time under double logarithmic coordinates in a wide stress range, so the prediction results are more reasonable. |
| format | Article |
| id | doaj-art-71b34953d41b4973aa94b8a237a944f1 |
| institution | OA Journals |
| 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-71b34953d41b4973aa94b8a237a944f12025-08-20T02:37:35ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692022-01-01441201120631951610CREEP DAMAGE CONSTITUTIVE MODEL OF FE-CR-NI BASED AUSTENITIC STAINLESS STEELGUO XiaoFengLIU BenXinNAN NingNingGONG JianMingDONG ZhiMingConsidering the effect of carbide coarsening and void nucleation and growth on the creep damage of Fe-Cr-Ni based austenitic stainless steel, a new creep damage constitutive model was established based on the hyperbolic sinh function, and material parameter optimization procedure of the model was also developed. In addition, a comparative assessment of extrapolated failure times for 3 creep damage models was undertaken for the standard uniaxial round-bar specimen using finite element software.The results show that the proposed constitutive model is capable to reflect the creep behavior of the material under different stress levels at 890 ℃. Compared with the failure time predicted by the widely used power law model（Kachanov-Robotnov model and Liu-Murakami model）, the prediction results of the current model can reflect the nonlinear relationship between stress and creep rupture time under double logarithmic coordinates in a wide stress range, so the prediction results are more reasonable.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.05.02620Cr32Ni1Nb steelCreep damage modelsFinite element analysis |
| spellingShingle | GUO XiaoFeng LIU BenXin NAN NingNing GONG JianMing DONG ZhiMing CREEP DAMAGE CONSTITUTIVE MODEL OF FE-CR-NI BASED AUSTENITIC STAINLESS STEEL Jixie qiangdu 20Cr32Ni1Nb steel Creep damage models Finite element analysis |
| title | CREEP DAMAGE CONSTITUTIVE MODEL OF FE-CR-NI BASED AUSTENITIC STAINLESS STEEL |
| title_full | CREEP DAMAGE CONSTITUTIVE MODEL OF FE-CR-NI BASED AUSTENITIC STAINLESS STEEL |
| title_fullStr | CREEP DAMAGE CONSTITUTIVE MODEL OF FE-CR-NI BASED AUSTENITIC STAINLESS STEEL |
| title_full_unstemmed | CREEP DAMAGE CONSTITUTIVE MODEL OF FE-CR-NI BASED AUSTENITIC STAINLESS STEEL |
| title_short | CREEP DAMAGE CONSTITUTIVE MODEL OF FE-CR-NI BASED AUSTENITIC STAINLESS STEEL |
| title_sort | creep damage constitutive model of fe cr ni based austenitic stainless steel |
| topic | 20Cr32Ni1Nb steel Creep damage models Finite element analysis |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.05.026 |
| work_keys_str_mv | AT guoxiaofeng creepdamageconstitutivemodeloffecrnibasedausteniticstainlesssteel AT liubenxin creepdamageconstitutivemodeloffecrnibasedausteniticstainlesssteel AT nanningning creepdamageconstitutivemodeloffecrnibasedausteniticstainlesssteel AT gongjianming creepdamageconstitutivemodeloffecrnibasedausteniticstainlesssteel AT dongzhiming creepdamageconstitutivemodeloffecrnibasedausteniticstainlesssteel |