Crack Growth Behaviour of P92 Steel Under Creep-fatigue Interaction Conditions
Creep-fatigue interaction tests of P92 steel at 630℃ under stress-controlled were carried out, and the crack propagation behaviour of P92 steel was studied. The fracture mechanism of crack growth under creep-fatigue interaction and the transition points in <em>a-N</em> curves were analyz...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2017-05-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2017/V45/I5/112 |
| _version_ | 1797964870365216768 |
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| author | JING Hong-yang TANG Meng-ru ZHAO Lei XU Lian-yong |
| author_facet | JING Hong-yang TANG Meng-ru ZHAO Lei XU Lian-yong |
| author_sort | JING Hong-yang |
| collection | DOAJ |
| description | Creep-fatigue interaction tests of P92 steel at 630℃ under stress-controlled were carried out, and the crack propagation behaviour of P92 steel was studied. The fracture mechanism of crack growth under creep-fatigue interaction and the transition points in <em>a-N</em> curves were analyzed based on the fracture morphology. The results show that the fracture of P92 steel under creep-fatigue interaction is creep ductile fracture and the (<em>C</em><sub>t</sub>)<sub>avg</sub> parameter is employed to demonstrate the crack growth behaviour; in addition, the fracture morphology shows that the crack growth for P92 steel under creep-fatigue interaction is mainly caused by the nucleation and growth of the creep voids and micro-cracks. Furthermore, the transition point of <em>a</em>-lg(<em>N</em><sub>i</sub>/<em>N</em><sub>f</sub>) curve corresponds to the turning point of initial crack growth changed into steady crack growth while the transition point of (d<em>a</em>/d<em>N</em>)-<em>N</em> curve exhibits the turning point of steady creep crack growth changed into the accelerated crack growth. |
| first_indexed | 2024-04-11T01:51:31Z |
| format | Article |
| id | doaj.art-f5306895ac1149b98fffb765eeb5e99a |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T01:51:31Z |
| publishDate | 2017-05-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-f5306895ac1149b98fffb765eeb5e99a2023-01-03T06:26:54ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812017-05-0145511211710.11868/j.issn.1001-4381.2015.000699201705000699Crack Growth Behaviour of P92 Steel Under Creep-fatigue Interaction ConditionsJING Hong-yang0TANG Meng-ru1ZHAO Lei2XU Lian-yong3School of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaSchool of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaSchool of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaSchool of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaCreep-fatigue interaction tests of P92 steel at 630℃ under stress-controlled were carried out, and the crack propagation behaviour of P92 steel was studied. The fracture mechanism of crack growth under creep-fatigue interaction and the transition points in <em>a-N</em> curves were analyzed based on the fracture morphology. The results show that the fracture of P92 steel under creep-fatigue interaction is creep ductile fracture and the (<em>C</em><sub>t</sub>)<sub>avg</sub> parameter is employed to demonstrate the crack growth behaviour; in addition, the fracture morphology shows that the crack growth for P92 steel under creep-fatigue interaction is mainly caused by the nucleation and growth of the creep voids and micro-cracks. Furthermore, the transition point of <em>a</em>-lg(<em>N</em><sub>i</sub>/<em>N</em><sub>f</sub>) curve corresponds to the turning point of initial crack growth changed into steady crack growth while the transition point of (d<em>a</em>/d<em>N</em>)-<em>N</em> curve exhibits the turning point of steady creep crack growth changed into the accelerated crack growth.http://jme.biam.ac.cn/CN/Y2017/V45/I5/112P92 steelcreep-fatigue interactioncrack growthfracture morphologyfracture parameter |
| spellingShingle | JING Hong-yang TANG Meng-ru ZHAO Lei XU Lian-yong Crack Growth Behaviour of P92 Steel Under Creep-fatigue Interaction Conditions Cailiao gongcheng P92 steel creep-fatigue interaction crack growth fracture morphology fracture parameter |
| title | Crack Growth Behaviour of P92 Steel Under Creep-fatigue Interaction Conditions |
| title_full | Crack Growth Behaviour of P92 Steel Under Creep-fatigue Interaction Conditions |
| title_fullStr | Crack Growth Behaviour of P92 Steel Under Creep-fatigue Interaction Conditions |
| title_full_unstemmed | Crack Growth Behaviour of P92 Steel Under Creep-fatigue Interaction Conditions |
| title_short | Crack Growth Behaviour of P92 Steel Under Creep-fatigue Interaction Conditions |
| title_sort | crack growth behaviour of p92 steel under creep fatigue interaction conditions |
| topic | P92 steel creep-fatigue interaction crack growth fracture morphology fracture parameter |
| url | http://jme.biam.ac.cn/CN/Y2017/V45/I5/112 |
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