Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1016/j.matchemphys.2019.121904 |
| Local -brittle cracking in the heat-affected zone of lightweight steels | |
| Kim, Bongyoon1; Jeong, Seonghoon1; Park, Seong-Jun2; Moon, Joonoh2; Lee, Changhee1 | |
| 通讯作者 | Lee, Changhee |
| 来源期刊 | MATERIALS CHEMISTRY AND PHYSICS
 |
| ISSN | 0254-0584 |
| EISSN | 1879-3312 |
| 出版年 | 2019 |
| 卷号 | 238 |
| 英文摘要 | 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. |
| 英文关键词 | Varestraint test Lightweight steel kappa-carbide Grain boundary HAZ cracking |
| 类型 | Article |
| 语种 | 英语 |
| 国家 | South Korea |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000490046000037 |
| WOS关键词 | KAPPA-CARBIDE PRECIPITATION ; PHASE-TRANSFORMATIONS ; MECHANICAL-PROPERTIES ; DEFORMATION-BEHAVIOR ; WELD CGHAZ ; MN ; MICROSTRUCTURE ; STRENGTH ; TEMPERATURE ; FRACTURE |
| WOS类目 | Materials Science, Multidisciplinary |
| WOS研究方向 | Materials Science |
| EI主题词 | 2019-12-01 |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/311326 |
| 作者单位 | 1.Hanyang Univ, Div Mat Sci & Engn, Seoul 133791, South Korea; 2.Korea Inst Mat Sci, Adv Metall Mat Div, Korea Ferrous Alloy Dept, 797 Changwondea To, Chang Won 642831, Gyeongnam, South Korea |
| 推荐引用方式 GB/T 7714 | Kim, Bongyoon,Jeong, Seonghoon,Park, Seong-Jun,et al. Local -brittle cracking in the heat-affected zone of lightweight steels[J],2019,238. |
| APA | Kim, Bongyoon,Jeong, Seonghoon,Park, Seong-Jun,Moon, Joonoh,&Lee, Changhee.(2019).Local -brittle cracking in the heat-affected zone of lightweight steels.MATERIALS CHEMISTRY AND PHYSICS,238. |
| MLA | Kim, Bongyoon,et al."Local -brittle cracking in the heat-affected zone of lightweight steels".MATERIALS CHEMISTRY AND PHYSICS 238(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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