Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이창희 | - |
dc.date.accessioned | 2020-11-18T01:40:51Z | - |
dc.date.available | 2020-11-18T01:40:51Z | - |
dc.date.issued | 2019-12 | - |
dc.identifier.citation | MATERIALS CHEMISTRY AND PHYSICS, v. 238, article no. UNSP 121904 | en_US |
dc.identifier.issn | 0254-0584 | - |
dc.identifier.issn | 1879-3312 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0254058419307011?via%3Dihub | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/155654 | - |
dc.description.abstract | According to previous studies, the presence of kappa-carbide typically has a significant effect on the microstructure and mechanical properties of austenitic and ferritic Fe-Mn-Al-C steels. However, research on the welding characteristics of lightweight Fe-Mn-Al-C steels is lacking, despite the kappa-carbide-related behavior being a critical factor in determining the performance of welds in lightweight Fe-Mn-Al-C steels. In this study, the cause for the cracking at heat-affected zone (HAZ) in lightweight steel was elucidated. With respect to this, varestraint test was performed, and the investigation was conducted with focus on the kappa-carbide. Moreover, the effect of Al (kappa-carbide creation promoting element) and Cr (kappa-carbide creation suppressing element) addition on crack susceptibility was elucidated to clearly confirm the effect of kappa-carbide. Varestraint tests showed that cracks were mainly found in the 750 degrees C-900 degrees C peak HAZ, 1000-1500 nn away from the fusion line. The cracks occurred at , the austenite/austenite and austenite/ferrite grain boundaries. The microstructural arid hardness evaluation revealed that the cracking along the grain boundaries at the 750 degrees C-900 degrees C peak HAZ Was induced by two factors: i) relative weakening of grain boundaries due to grain interior kappa-carbide and ii) grain boundary embrittlement due to grain boundary kappa-carbide. The effect of kappa-carbide on the crack susceptibility of HAZ was further clarified by investigating the cases of Al (kappa-carbide creation promoting element) and Cr (kappa-carbide creation suppressing element) addition. | en_US |
dc.description.sponsorship | This work was supported by the Materials and Components Technology Development Program (10048157) funded by the Ministry of Trade, Industry and Energy (MOTIE, Korea). | en_US |
dc.language.iso | en | en_US |
dc.publisher | ELSEVIER SCIENCE SA | en_US |
dc.subject | Varestraint test | en_US |
dc.subject | Lightweight steel | en_US |
dc.subject | kappa-carbide | en_US |
dc.subject | Grain boundary | en_US |
dc.subject | HAZ cracking | en_US |
dc.title | Local -brittle cracking in the heat-affected zone of lightweight steels | en_US |
dc.type | Article | en_US |
dc.relation.no | 1 | - |
dc.relation.volume | 238 | - |
dc.identifier.doi | 10.1016/j.matchemphys.2019.121904 | - |
dc.relation.page | 1-8 | - |
dc.relation.journal | MATERIALS CHEMISTRY AND PHYSICS | - |
dc.contributor.googleauthor | Kim, Bongyoon | - |
dc.contributor.googleauthor | Jeong, Seonghoon | - |
dc.contributor.googleauthor | Park, Seong-Jun | - |
dc.contributor.googleauthor | Moon, Joonoh | - |
dc.contributor.googleauthor | Lee, Changhee | - |
dc.relation.code | 2019001117 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MATERIALS SCIENCE AND ENGINEERING | - |
dc.identifier.pid | chlee | - |
dc.identifier.orcid | https://orcid.org/0000-0002-1775-3020 | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.