http://scholars.ntou.edu.tw/handle/123456789/4651
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Tai-Cheng Chen | en_US |
dc.contributor.author | Yi-Hsin Cheng | en_US |
dc.contributor.author | Leu-Wen Tsay | en_US |
dc.contributor.author | Ren-Kae Shiue | en_US |
dc.date.accessioned | 2020-11-19T02:23:37Z | - |
dc.date.available | 2020-11-19T02:23:37Z | - |
dc.date.issued | 2018-04 | - |
dc.identifier.issn | 2075-4701 | - |
dc.identifier.uri | http://scholars.ntou.edu.tw/handle/123456789/4651 | - |
dc.description.abstract | Repair-welding of a cast Mar-M004 superalloy by gas tungsten arc welding was performed. Liquation cracks of the heat-affected zone (HAZ) in a Mar-M004 weldment were closely related to the presence of low-melting constituents along the solidified boundaries in the weld. The metal carbides (MC), M3B2 and M5B3 borides, Ni7(Hf,Zr)2 intermetallic compounds, and γ-γ′colonies were found at the interdendritic boundaries. Fine boride precipitates mixed with intermetallic compounds in lamellar form were more likely to liquate during repair-welding. The melting of borides and intermetallic compounds in 1180 °C/4 h treated samples confirmed the poor weldability of the Mar-M004 superalloy due to enhanced liquation cracking. In addition to boride formation, fractographs of liquation cracks revealed strong segregation of B element in carbides and intermetallics, which might further lower the solidus temperature of the repair weld. | en_US |
dc.language.iso | en | en_US |
dc.relation.ispartof | Metals | en_US |
dc.subject | gas tungsten arc welding | en_US |
dc.subject | liquation crack | en_US |
dc.subject | MC carbide | en_US |
dc.subject | intermetallic compound | en_US |
dc.subject | boride | en_US |
dc.subject | Mar-M004 superalloy | en_US |
dc.title | Effects of Grain Boundary Microconstituents on Heat Affect Zone Cracks in a Mar-M004 Weldment | en_US |
dc.type | journal article | en_US |
dc.identifier.doi | 10.3390/met8040201 | - |
dc.identifier.isi | WOS:000434882800004 | - |
dc.relation.journalvolume | 8 | en_US |
dc.relation.journalissue | 4 | en_US |
dc.relation.pages | 201 | en_US |
item.grantfulltext | none | - |
item.fulltext | no fulltext | - |
item.languageiso639-1 | en | - |
item.openairetype | journal article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.cerifentitytype | Publications | - |
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.dept | Ocean Energy and Engineering Technology | - |
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 | - |
crisitem.author.parentorg | Center of Excellence for Ocean Engineering | - |
顯示於: | 光電與材料科技學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。