https://scholars.lib.ntu.edu.tw/handle/123456789/576925
標題: | Tailoring M7C3 carbide via electron work function-guided modification | 作者: | Guo L Tang Y Cui J Li J Yang J.-R Li D.Y. JER-REN YANG |
關鍵字: | Atomic force microscopy; Calculations; Carbides; Chromium metallography; Iron metallography; Work function; Electron work functions; Electronic origin; First-principles calculation; In-situ analysis; Mechanical behaviour; Metallic bonds; Metallic elements; White cast irons; Chromium compounds | 公開日期: | 2021 | 卷: | 190 | 起(迄)頁: | 168-173 | 來源出版物: | Scripta Materialia | 摘要: | M7C3 carbide [M: metallic element] is the primary reinforcement in white cast irons. Further improving its properties for maximized benefits is highly desired. However, no clear clues are available to guide the modification. Through atomic force microscopy in-situ analysis and first-principles calculations, we demonstrate that (Fe,Cr)7C3 carbide's strength is governed by its metallic bond component. We theoretically prove that M7C3 carbide is tailorable by partially replacing its metallic elements with substitutes selected based on their work function as an indicator. This study provides an insight into the electronic origin of carbide's mechanical behaviour, helping guide developing high-performance M7C3 carbides. ? 2020 |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090579527&doi=10.1016%2fj.scriptamat.2020.09.002&partnerID=40&md5=9c6b838f455c910c3abe9a9a2255cd33 https://scholars.lib.ntu.edu.tw/handle/123456789/576925 |
ISSN: | 13596462 | DOI: | 10.1016/j.scriptamat.2020.09.002 |
顯示於: | 材料科學與工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。