| Formation of delta-ferrite and its effect on impact toughness of GTAW weld metals in a 12 wt-% Cr steel | |
| Wu, Dong1; Tian, Wenbin1,2; Zhang, Kaiyuan1,2; Lu, Shanping1,3 | |
| Corresponding Author | Lu, Shanping(shplu@imr.ac.cn) |
| 2022-11-23 | |
| Source Publication | SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
 |
| ISSN | 1362-1718 |
| Pages | 7 |
| Abstract | This research focused on the formation of the delta-phase and the corresponding effect on the impact toughness in a GTAW weld metal of a 12%Cr F/M steel. Two kinds of delta-phase were identified: one located at the prior austenitic grain boundaries (PAGBs) (called delta(PAGB)) and the other was in the inter-dendritic region (called delta(inter)). The delta(inter) implied that the peritectic transition that occurred at the final stage of solidification in the DSC test, was suppressed in the welding process. A preheating treatment at 95 & DEG;C decreased optimally the delta-phase fraction and thereby decrease the ductile-brittle transition temperature (DBTT). However, excessive preheating at higher temperatures enhanced the fraction of the delta(inter) by promoting the micro-segregation and thus increased the DBTT. |
| Keyword | delta-phase 12Cr% steel preheating temperature GTAW phase transformation impact toughness |
| Funding Organization | National Key Research and Development Program of China |
| DOI | 10.1080/13621718.2022.2148063 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China ; [2018YFA0702902] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000889485400001 |
| Publisher | TAYLOR & FRANCIS LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/176870 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Lu, Shanping |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Inst Met Sci & Technol, Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Wu, Dong,Tian, Wenbin,Zhang, Kaiyuan,et al. Formation of delta-ferrite and its effect on impact toughness of GTAW weld metals in a 12 wt-% Cr steel[J]. SCIENCE AND TECHNOLOGY OF WELDING AND JOINING,2022:7. |
| APA | Wu, Dong,Tian, Wenbin,Zhang, Kaiyuan,&Lu, Shanping.(2022).Formation of delta-ferrite and its effect on impact toughness of GTAW weld metals in a 12 wt-% Cr steel.SCIENCE AND TECHNOLOGY OF WELDING AND JOINING,7. |
| MLA | Wu, Dong,et al."Formation of delta-ferrite and its effect on impact toughness of GTAW weld metals in a 12 wt-% Cr steel".SCIENCE AND TECHNOLOGY OF WELDING AND JOINING (2022):7. |
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