STUDY ON CRITICAL CTOD OF BIG-THICKNESS AND HIGH-STRENGTH STEELS
As one of the essential criteria of assessment to welding toughness,CTOD（ Crack tip opening displacement） is widely applied in engineering.The research on critical CTOD of big thickness and high strength steels has been a hot issue,therefore the theoretical research in China lags behind its overseas...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2015-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.05.012 |
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| author | XIA ZiYu MIAO ZhangMu MA Tao CHEN Gang PENG Sheng |
| author_facet | XIA ZiYu MIAO ZhangMu MA Tao CHEN Gang PENG Sheng |
| author_sort | XIA ZiYu |
| collection | DOAJ |
| description | As one of the essential criteria of assessment to welding toughness,CTOD（ Crack tip opening displacement） is widely applied in engineering.The research on critical CTOD of big thickness and high strength steels has been a hot issue,therefore the theoretical research in China lags behind its overseas.The present paper takes the single edge fatigue precrack of CTOD specimen as a flaw based on the technical route of the British Standard 7910-2005,which is "Guide to methods for assessing the acceptability of flaws in metallic structures".In the meanwhile,make the grading assessments of the HAZ of the60 mm thick EQ70 steel welded joints,combining the results of the CTOD tests.The CGHAZ microstructures of EQ70 steel welded joints has been analyzed by SEM.The assessments on welded joints of EQ70 show that the CTOD values are in the acceptable range.And there are some fine microstructures good for the toughness of the welded joint.This method provides a useful guidance in researches of critical CTOD. |
| format | Article |
| id | doaj-art-0bb543ed35ef412cbc1b82f15966235b |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2015-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-0bb543ed35ef412cbc1b82f15966235b2025-01-15T02:37:59ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692015-01-013798398730592982STUDY ON CRITICAL CTOD OF BIG-THICKNESS AND HIGH-STRENGTH STEELSXIA ZiYuMIAO ZhangMuMA TaoCHEN GangPENG ShengAs one of the essential criteria of assessment to welding toughness,CTOD（ Crack tip opening displacement） is widely applied in engineering.The research on critical CTOD of big thickness and high strength steels has been a hot issue,therefore the theoretical research in China lags behind its overseas.The present paper takes the single edge fatigue precrack of CTOD specimen as a flaw based on the technical route of the British Standard 7910-2005,which is "Guide to methods for assessing the acceptability of flaws in metallic structures".In the meanwhile,make the grading assessments of the HAZ of the60 mm thick EQ70 steel welded joints,combining the results of the CTOD tests.The CGHAZ microstructures of EQ70 steel welded joints has been analyzed by SEM.The assessments on welded joints of EQ70 show that the CTOD values are in the acceptable range.And there are some fine microstructures good for the toughness of the welded joint.This method provides a useful guidance in researches of critical CTOD.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.05.012BS7910FADEQ70MicrostructureCritical CTOD |
| spellingShingle | XIA ZiYu MIAO ZhangMu MA Tao CHEN Gang PENG Sheng STUDY ON CRITICAL CTOD OF BIG-THICKNESS AND HIGH-STRENGTH STEELS Jixie qiangdu BS7910 FAD EQ70 Microstructure Critical CTOD |
| title | STUDY ON CRITICAL CTOD OF BIG-THICKNESS AND HIGH-STRENGTH STEELS |
| title_full | STUDY ON CRITICAL CTOD OF BIG-THICKNESS AND HIGH-STRENGTH STEELS |
| title_fullStr | STUDY ON CRITICAL CTOD OF BIG-THICKNESS AND HIGH-STRENGTH STEELS |
| title_full_unstemmed | STUDY ON CRITICAL CTOD OF BIG-THICKNESS AND HIGH-STRENGTH STEELS |
| title_short | STUDY ON CRITICAL CTOD OF BIG-THICKNESS AND HIGH-STRENGTH STEELS |
| title_sort | study on critical ctod of big thickness and high strength steels |
| topic | BS7910 FAD EQ70 Microstructure Critical CTOD |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.05.012 |
| work_keys_str_mv | AT xiaziyu studyoncriticalctodofbigthicknessandhighstrengthsteels AT miaozhangmu studyoncriticalctodofbigthicknessandhighstrengthsteels AT matao studyoncriticalctodofbigthicknessandhighstrengthsteels AT chengang studyoncriticalctodofbigthicknessandhighstrengthsteels AT pengsheng studyoncriticalctodofbigthicknessandhighstrengthsteels |