Institutional Repository of Coll Mat Sci & Engn
Effects of Boron Content on the Microstructure and Impact Toughness of 12Cr1MoVR Low-Alloy Heat-Resistant Steel Weld Metals | |
Dou, Guishan1,2; Cao, Rui1,2; Cai, Changliang1,2; Han, Cheng1,2; Guo, Xili3; Jiang, Yong3; Chen, Jianhong1,2 | |
2021 | |
发表期刊 | MATERIALS |
卷号 | 14期号:4 |
摘要 | The impact toughness of low-Cr heat-resistant steel weld metal is an important problem to broaden the application of low-Cr heat-resistant steel. In this study, the microstructure and impact toughness of 12Cr1MoVR low-alloy heat-resistant steel weld metals with various boron contents (B1 = 0.0028%, B2 = 0.0054%, and B3 = 0.0079%) were investigated. The microstructures of all weld metals were composed of block ferrite, carbides, and inclusions. Results indicated that with increased B content, prior austenite grain sizes decreased, and minor microstructure changes could be found. With the increase in B content from 0.0028% to 0.0054% to 0.0079%, the ductile-brittle transition temperature of the weld metals decreased from 30 to 0 to -14 degrees C, the toughness of weld metal increased, and the hardness slightly decreased, all of which are directly related to the refinement of prior austenite grain size because of the addition of B content. However, on the top-shelf zone, such as at the testing temperature of 80 degrees C, ductile fracture dominates the fracture surface; with the increase in B content, the size and density of inclusions increased gradually, which led to the decrease of the impact toughness at 80 degrees C when the B content was 0.0079%. |
关键词 | low-Cr heat-resistant steel weld metal impact toughness microstructure hardness boron |
DOI | 10.3390/ma14040926 |
收录类别 | SCIE |
语种 | 英语 |
WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter |
WOS记录号 | WOS:000624119700001 |
出版者 | MDPI |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/147471 |
专题 | 材料科学与工程学院_特聘教授组 材料科学与工程学院 |
作者单位 | 1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Dept Mat Sci & Engn, Lanzhou 730050, Peoples R China; 3.Atlantic China Welding Consumables Inc, Zigong 643000, Peoples R China |
第一作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室; 兰州理工大学 |
第一作者的第一单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
推荐引用方式 GB/T 7714 | Dou, Guishan,Cao, Rui,Cai, Changliang,et al. Effects of Boron Content on the Microstructure and Impact Toughness of 12Cr1MoVR Low-Alloy Heat-Resistant Steel Weld Metals[J]. MATERIALS,2021,14(4). |
APA | Dou, Guishan.,Cao, Rui.,Cai, Changliang.,Han, Cheng.,Guo, Xili.,...&Chen, Jianhong.(2021).Effects of Boron Content on the Microstructure and Impact Toughness of 12Cr1MoVR Low-Alloy Heat-Resistant Steel Weld Metals.MATERIALS,14(4). |
MLA | Dou, Guishan,et al."Effects of Boron Content on the Microstructure and Impact Toughness of 12Cr1MoVR Low-Alloy Heat-Resistant Steel Weld Metals".MATERIALS 14.4(2021). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论