EXPERIMENTAL RESEARCH OF FRACTURE TOUGHNESS ON NEW ROTOR STEEL FW2 AT ELEVATED TEMPERATURE
The multi-specimen method and the normalization method and the elastic unloading compliance method were used to test the high-temperature fracture toughness of 630℃ on new rotor steel FW2. The multi-specimen method and the normalization method have obtained valid high-temperature fracture toughness...
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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 |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.01.031 |
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| author | WU HaiLi SUN LinGen |
| author_facet | WU HaiLi SUN LinGen |
| author_sort | WU HaiLi |
| collection | DOAJ |
| description | The multi-specimen method and the normalization method and the elastic unloading compliance method were used to test the high-temperature fracture toughness of 630℃ on new rotor steel FW2. The multi-specimen method and the normalization method have obtained valid high-temperature fracture toughness test results. Comparison of the test results shows that the J-R resistance curve obtained by normalization method is within the ± 99.7% confidence interval of the fitting curve of the multi-sample method. The fracture toughness characteristic value J<sub>0.2 BL</sub> obtained by normalization method is lower than the characteristic value J<sub>0.2 BL</sub>obtained by the multi-specimen method and is located at the lower limit of the confidence interval of the multi-specimen method, which verifies the validity of the normalization method. Elastic unloading compliance method is not suitable for the high-temperature fracture toughness test for the stress field at the crack tip of FW2 steel does not conform to the elastic-plastic fracture mechanical characteristics at elevated temperature. |
| format | Article |
| id | doaj-art-23a98e8782814434a7b89eb0bcc353f0 |
| 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-23a98e8782814434a7b89eb0bcc353f02025-01-15T02:24:55ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692022-01-014423223829910482EXPERIMENTAL RESEARCH OF FRACTURE TOUGHNESS ON NEW ROTOR STEEL FW2 AT ELEVATED TEMPERATUREWU HaiLiSUN LinGenThe multi-specimen method and the normalization method and the elastic unloading compliance method were used to test the high-temperature fracture toughness of 630℃ on new rotor steel FW2. The multi-specimen method and the normalization method have obtained valid high-temperature fracture toughness test results. Comparison of the test results shows that the J-R resistance curve obtained by normalization method is within the ± 99.7% confidence interval of the fitting curve of the multi-sample method. The fracture toughness characteristic value J<sub>0.2 BL</sub> obtained by normalization method is lower than the characteristic value J<sub>0.2 BL</sub>obtained by the multi-specimen method and is located at the lower limit of the confidence interval of the multi-specimen method, which verifies the validity of the normalization method. Elastic unloading compliance method is not suitable for the high-temperature fracture toughness test for the stress field at the crack tip of FW2 steel does not conform to the elastic-plastic fracture mechanical characteristics at elevated temperature.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.01.031High temperature fracture toughnessNew rotor steelMulti-specimen methodNormalization methodElastic unloading compliance method |
| spellingShingle | WU HaiLi SUN LinGen EXPERIMENTAL RESEARCH OF FRACTURE TOUGHNESS ON NEW ROTOR STEEL FW2 AT ELEVATED TEMPERATURE Jixie qiangdu High temperature fracture toughness New rotor steel Multi-specimen method Normalization method Elastic unloading compliance method |
| title | EXPERIMENTAL RESEARCH OF FRACTURE TOUGHNESS ON NEW ROTOR STEEL FW2 AT ELEVATED TEMPERATURE |
| title_full | EXPERIMENTAL RESEARCH OF FRACTURE TOUGHNESS ON NEW ROTOR STEEL FW2 AT ELEVATED TEMPERATURE |
| title_fullStr | EXPERIMENTAL RESEARCH OF FRACTURE TOUGHNESS ON NEW ROTOR STEEL FW2 AT ELEVATED TEMPERATURE |
| title_full_unstemmed | EXPERIMENTAL RESEARCH OF FRACTURE TOUGHNESS ON NEW ROTOR STEEL FW2 AT ELEVATED TEMPERATURE |
| title_short | EXPERIMENTAL RESEARCH OF FRACTURE TOUGHNESS ON NEW ROTOR STEEL FW2 AT ELEVATED TEMPERATURE |
| title_sort | experimental research of fracture toughness on new rotor steel fw2 at elevated temperature |
| topic | High temperature fracture toughness New rotor steel Multi-specimen method Normalization method Elastic unloading compliance method |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2022.01.031 |
| work_keys_str_mv | AT wuhaili experimentalresearchoffracturetoughnessonnewrotorsteelfw2atelevatedtemperature AT sunlingen experimentalresearchoffracturetoughnessonnewrotorsteelfw2atelevatedtemperature |