http://scholars.ntou.edu.tw/handle/123456789/20033| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Leu-Wen Tsay | en_US |
| dc.contributor.author | Huang, Wenbo | en_US |
| dc.contributor.author | Chen, C | en_US |
| dc.date.accessioned | 2022-01-20T06:37:46Z | - |
| dc.date.available | 2022-01-20T06:37:46Z | - |
| dc.date.issued | 1997 | - |
| dc.identifier.uri | http://scholars.ntou.edu.tw/handle/123456789/20033 | - |
| dc.description.abstract | The effects of environmental hydrogen content on fatigue crack growth rates (FCGRs) in T-250 maraging steel plates and laser welds were investigated. The influence of ageing treatments on fatigue characteristics of the alloy was also studied. Experimental results revealed that the accelerated FCGRs in the presence of hydrogen were always associated with changes in fracture modes that appear in compact-tension specimens. Even for overaged specimens with excellent resistance to gaseous hydrogen embrittlement, such an acceleration of crack growth in hydrogen could not be avoided. The crack path of underaged specimens in hydrogen was found mainly along prior austenite boundaries for steel plates and along coarse columnar boundaries for welds. In gaseous hydrogen, peak-aged welds exhibited intergranular and quasi-cleavage mixed fracture modes, compared to mainly quasi-clevage for similar aged steel plates. Hence, the enhancement of crack growth in hydrogen was more pronounced for the welds. Overaged welds showed higher FCGRs than the same aged steel plates only in hydrogen and for Delta K values greater than 20M Pa root m. | en_US |
| dc.language.iso | en | en_US |
| dc.subject | T-250 maraging steel | en_US |
| dc.subject | laser welding | en_US |
| dc.subject | hydrogen embrittlement | en_US |
| dc.subject | fatigue crack growth rate | en_US |
| dc.title | Assisted crack growth in maraging steel welds by gaseous hydrogen | en_US |
| dc.type | journal article | en_US |
| dc.identifier.doi | 10.1111/j.1460-2695.1997.tb01545.x | - |
| dc.relation.journalvolume | 20 | en_US |
| dc.relation.journalissue | 7 | en_US |
| dc.relation.pages | 1033-1041 | en_US |
| item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.fulltext | no fulltext | - |
| item.grantfulltext | none | - |
| item.openairetype | journal article | - |
| crisitem.author.dept | College of Electrical Engineering and Computer Science | - |
| crisitem.author.dept | Department of Optoelectronics and Materials Technology | - |
| crisitem.author.dept | National Taiwan Ocean University,NTOU | - |
| crisitem.author.dept | Center of Excellence for Ocean Engineering | - |
| crisitem.author.orcid | 0000-0003-1644-9745 | - |
| crisitem.author.parentorg | National Taiwan Ocean University,NTOU | - |
| crisitem.author.parentorg | College of Electrical Engineering and Computer Science | - |
| crisitem.author.parentorg | National Taiwan Ocean University,NTOU | - |
| Appears in Collections: | 光電與材料科技學系 | |
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