Creep-fatigue crack growth behaviour of P91 steels
The importance of predicting failure due to combined creep-fatigue crack growth in high temperature power-plant components has become of great importance importance due to the need for plant to ‘load follow’ in response to fluctuations in demands and the availability of renewables. P91 steel has bee...
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| Format: | Conference or Workshop Item |
| Language: | English |
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Elsevier B.V.
2016
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| Online Access: | http://umpir.ump.edu.my/id/eprint/29424/ http://umpir.ump.edu.my/id/eprint/29424/1/Creep-fatigue%20crack%20growth%20behaviour%20of%20P91%20steels.pdf |
| _version_ | 1848823275679907840 |
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| author | Norhaida, Ab. Razak Davies, C. M. Nikbin, K. M. |
| author_facet | Norhaida, Ab. Razak Davies, C. M. Nikbin, K. M. |
| author_sort | Norhaida, Ab. Razak |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | The importance of predicting failure due to combined creep-fatigue crack growth in high temperature power-plant components has become of great importance importance due to the need for plant to ‘load follow’ in response to fluctuations in demands and the availability of renewables. P91 steel has been widely utilized in conventional plant components. Creep fatigue crack growth (CFCG) tests have been performed on compact specimens at temperatures ranging between 600° C to 625° C. The experimental results have been compared to static creep, high cycle fatigue and CFCG test data available in literature on P91 steel. The CFCG data has been characterised using stress intensity factor range parameter, ΔK and C* parameter. The crack growth per cycle and ∆K relationship shows that at high frequency, the CFCG behaviour tends to that of high cycle fatigue crack growth and at low frequency, the contribution of creep becomes increasingly more significant. The correlation between crack growth rate and C* parameter, shows that most CFCG data fall within the creep crack growth (CCG) P91 data band which may indicate that the crack growth behaviour is dominated by creep processes. Fractography has also shown an intergranular, ductile fracture surface indicating creep dominance for the conditions considered. A linear cummulative rule has ben used to predict the CFCG experimental result. |
| first_indexed | 2025-11-15T02:54:33Z |
| format | Conference or Workshop Item |
| id | ump-29424 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T02:54:33Z |
| publishDate | 2016 |
| publisher | Elsevier B.V. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-294242023-08-22T03:35:09Z http://umpir.ump.edu.my/id/eprint/29424/ Creep-fatigue crack growth behaviour of P91 steels Norhaida, Ab. Razak Davies, C. M. Nikbin, K. M. TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery The importance of predicting failure due to combined creep-fatigue crack growth in high temperature power-plant components has become of great importance importance due to the need for plant to ‘load follow’ in response to fluctuations in demands and the availability of renewables. P91 steel has been widely utilized in conventional plant components. Creep fatigue crack growth (CFCG) tests have been performed on compact specimens at temperatures ranging between 600° C to 625° C. The experimental results have been compared to static creep, high cycle fatigue and CFCG test data available in literature on P91 steel. The CFCG data has been characterised using stress intensity factor range parameter, ΔK and C* parameter. The crack growth per cycle and ∆K relationship shows that at high frequency, the CFCG behaviour tends to that of high cycle fatigue crack growth and at low frequency, the contribution of creep becomes increasingly more significant. The correlation between crack growth rate and C* parameter, shows that most CFCG data fall within the creep crack growth (CCG) P91 data band which may indicate that the crack growth behaviour is dominated by creep processes. Fractography has also shown an intergranular, ductile fracture surface indicating creep dominance for the conditions considered. A linear cummulative rule has ben used to predict the CFCG experimental result. Elsevier B.V. 2016 Conference or Workshop Item PeerReviewed pdf en cc_by_nc_nd_4 http://umpir.ump.edu.my/id/eprint/29424/1/Creep-fatigue%20crack%20growth%20behaviour%20of%20P91%20steels.pdf Norhaida, Ab. Razak and Davies, C. M. and Nikbin, K. M. (2016) Creep-fatigue crack growth behaviour of P91 steels. In: Procedia Structural Integrity; 21st European Conference on Fracture, ECF21 , 20 - 24 June 2016 , Catania, Italy. pp. 855-862., 2. ISSN 2452-3216 (Published) https://doi.org/10.1016/j.prostr.2016.06.110 |
| spellingShingle | TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery Norhaida, Ab. Razak Davies, C. M. Nikbin, K. M. Creep-fatigue crack growth behaviour of P91 steels |
| title | Creep-fatigue crack growth behaviour of P91 steels |
| title_full | Creep-fatigue crack growth behaviour of P91 steels |
| title_fullStr | Creep-fatigue crack growth behaviour of P91 steels |
| title_full_unstemmed | Creep-fatigue crack growth behaviour of P91 steels |
| title_short | Creep-fatigue crack growth behaviour of P91 steels |
| title_sort | creep-fatigue crack growth behaviour of p91 steels |
| topic | TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery |
| url | http://umpir.ump.edu.my/id/eprint/29424/ http://umpir.ump.edu.my/id/eprint/29424/ http://umpir.ump.edu.my/id/eprint/29424/1/Creep-fatigue%20crack%20growth%20behaviour%20of%20P91%20steels.pdf |