Institutional Repository of Coll Mat Sci & Engn
Effect of Heat Treatment on Delta-ferrite and Impact Toughness of P91 Heat-resistant Steel | |
Zhang, Jianbin1; Liu, Fan1; Xue, Fei2 | |
2018-04-25 | |
发表期刊 | Cailiao Daobao/Materials Review |
ISSN | 1005023X |
卷号 | 32期号:4页码:1318-1322 |
摘要 | Delta-ferrite, whose morphology, content and distribution depended on hot processing temperature, readily generated in P91 heat-resistant steel during hot processing, such as hot rolling, welding and heat treatment. The mixed microstructure, including martensite and delta-ferrite, was obtained by normalizing at different temperatures (1 150,1 250,1 300) in accor-dance with the designed heat treatment processing, and the normalizing microstructure (1 300) undertook oil cooling (at 1 050)+air cooling (at 760). The content, morphology and distribution of delta-ferrite were observed by OM (optical microscope), SEM (scanning electron microscope) with EDS (energy-dispersive spectrometry), and the microhardness, impact toughness and fracture failure mode of that were tested. The results demonstrated that delta-ferrite content of P91 steel increased along with the increase of normalizing temperature, and its morphology presented thin strip, strip and bulk, and bulk polygon. The delta-ferrite generated due normalizing at 1 300 could not be eliminated by normalizing at 1 050 and tempering at 760, while the content decreased, morphology and distribution of delta-ferrite altered. The impact energy reduced with increase in delta-ferrite content, and the impact fracture failure mode converted to brittle fracture from ductile-brittle fracture. In contrast with strip morphology, the bulk polygon of delta-ferrite at boundaries was not conducive to impact toughness. © 2018, Materials Review Magazine. All right reserved. |
关键词 | Austenite Brittle fracture Ferrite Heat treatment Hot rolled steel Hot rolling Microstructure Morphology Scanning electron microscopy Delta ferrite Effect of heat treatments Energy dispersive spectrometry Fracture failure modes Heat-resistant steel Heat-treatment processing Impact fracture Mixed microstructures |
DOI | 10.11896/j.issn.1005-023X.2018.08.021 |
收录类别 | EI |
语种 | 中文 |
出版者 | Cailiao Daobaoshe/ Materials Review |
EI入藏号 | 20184305984137 |
EI主题词 | Fracture toughness |
EI分类号 | 531.2 Metallography - 535.1.2 Rolling Mill Practice - 537.1 Heat Treatment Processes - 951 Materials Science |
来源库 | Compendex |
分类代码 | 531.2 Metallography - 535.1.2 Rolling Mill Practice - 537.1 Heat Treatment Processes - 951 Materials Science |
引用统计 | 无
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文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/114519 |
专题 | 材料科学与工程学院 保卫处 |
作者单位 | 1.State Key Laboratory of Advanced Processing and Recyling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Suzhou Nuclear Power Research Institute, Suzhou; 215004, China |
第一作者单位 | 兰州理工大学 |
第一作者的第一单位 | 兰州理工大学 |
推荐引用方式 GB/T 7714 | Zhang, Jianbin,Liu, Fan,Xue, Fei. Effect of Heat Treatment on Delta-ferrite and Impact Toughness of P91 Heat-resistant Steel[J]. Cailiao Daobao/Materials Review,2018,32(4):1318-1322. |
APA | Zhang, Jianbin,Liu, Fan,&Xue, Fei.(2018).Effect of Heat Treatment on Delta-ferrite and Impact Toughness of P91 Heat-resistant Steel.Cailiao Daobao/Materials Review,32(4),1318-1322. |
MLA | Zhang, Jianbin,et al."Effect of Heat Treatment on Delta-ferrite and Impact Toughness of P91 Heat-resistant Steel".Cailiao Daobao/Materials Review 32.4(2018):1318-1322. |
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