| 钒对高铬合金铸渗层组织与性能的影响 |
| |
| 引用本文： | 岳建国,刘汪洋,陈冲,魏世忠,刁晓刚.钒对高铬合金铸渗层组织与性能的影响[J].金属热处理,2022,47(6):178-185. |
| |
| 作者姓名： | 岳建国 刘汪洋 陈冲 魏世忠 刁晓刚 |
| |
| 作者单位： | 1.河南科技大学 材料科学与工程学院, 河南 洛阳 471003;2.河南科技大学 金属材料磨损控制与成型技术国家地方联合工程研究中心 , 河南 洛阳 471003;3.中信重工洛阳重铸铁业有限责任公司, 河南 洛阳 471003 |
| |
| 基金项目： | 国家重点研发计划(2020YFB2008400)； |
| |
| 摘 要： | 通过真空实型铸造工艺(V-EPC)在ZG45钢表面制备不同含钒量的高铬合金复合层,采用扫描电镜(SEM)、能谱仪(EDS)和X射线衍射仪(XRD)分析了含钒量对铸渗层组织的影响,使用洛氏硬度计和冲击磨损试验机研究了钒含量对硬度和耐磨性的影响。研究表明,铸渗层组织主要由α-Fe与α-Fe+M7C3+VC共晶组织组成,过渡层内各合金元素成梯度分布,C、Cr、V元素自铸渗层向基体发生了扩散,且C、Cr、V元素的分布与碳化物的分布高度重合。随着钒含量的增加,晶粒逐渐细化,共晶碳化物数量逐渐增多,VC也增多,铸渗层硬度和耐磨性显著提高。热处理后有大量二次碳化物析出,随着铸渗层中钒含量增加,热处理后二次硬化效果显著提高。
|
| 关 键 词： | 高铬合金铸渗层 组织和性能 钒含量 二次碳化物 |
| 收稿时间： | 2022-01-21 |
Effect of vanadium on microstructure and properties of high chrome alloy casting infiltration layer |
| |
| Yue Jianguo,Liu Wangyang,Chen Chong,Wei Shizhong,Diao Xiaogang.Effect of vanadium on microstructure and properties of high chrome alloy casting infiltration layer[J].Heat Treatment of Metals,2022,47(6):178-185. |
| |
| Authors: | Yue Jianguo Liu Wangyang Chen Chong Wei Shizhong Diao Xiaogang |
| |
| Affiliation: | 1. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang Henan 471003, China; 2. National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials, Henan University of Science and Technology, Luoyang Henan 471003, China; 3. Citic Luoyang Heavy Iron-Castings Company Ltd., Luoyang Henan 471003, China |
| |
| Abstract: | Some high chromium alloy casting infiltration composite layers with various vanadium contents were prepared on the surface of ZG45 steel by vaccum evaporative pattern casting process. Effect of different vanadium contents on microstructure of the layers was studied by using scanning electron microscopy (SEM), energy spectrometer (EDS)and X-ray diffraction (XRD), while that on the hardness and wear resistance was researched by using Rockwell hardness tester and the impact wear experiment machine. The results show that the structure of the casting infiltration layer is mainly composed of α-Fe and α-Fe+M7C3+VC eutectic structure. The alloying elements in the transition layer are distributed in gradient, and C, Cr, V elements are diffused from the casting infiltration layer to the matrix. The distribution of C, Cr, V elements coincide with the distribution of carbides. With the increase of vanadium content, the grain is gradually refined, the amount of eutectic carbides is gradually increased, the amount of VC is also increased, and the hardness and wear resistance of the casting infiltration layer is improved. After heat treatment, a large amount of secondary carbides is precipitated. With the increase of V content in the casting infiltration layer, the secondary hardening effect is significantly improved. |
| |
| Keywords: | high chromium alloy casting infiltration layer microstructure and properties vanadium content secondary carbides |
|
| 点击此处可从《金属热处理》浏览原始摘要信息 |
|
点击此处可从《金属热处理》下载全文 |
|
