Microstructure and tribological performance of FeCrNiMox medium-entropy alloy (MEA) coatings by high-speed laser cladding: Effect of molybdenum content - Details

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Abstract：

In　this　study,　FeCrNiMox　coatings　(x　=　0,　0.25,　0.5,　0.75,　1.0,　in　molar　ratio)　were　fabricated　on　45#　steel　using　high-speed　laser　cladding　technology.　The　objective　is　to　investigate　the　effect　of　Mo　content　on　microstructure　and　tribological　performance　of　the　FeCrNiMox　coatings.　The　results　reveal　that　the　σ　phase　precipitates　at　the　grain　boundaries　of　the　FCC　matrix　phase　when　the　Mo　molar　ratio　exceeds　0.75.　Moreover,　coatings　with　high　Mo　content　demonstrate　improved　hardness　and　tribological　performance　due　to　solid　solution　strengthening,　precipitation　hardening,　and　grain　refinement.　Optimal　coating　performance　occurred　at　Mo　molar　ratio　of　0.75,　as　excessive　σ　phase　precipitation　at　higher　Mo　levels　results　in　crack　formation,　which　reduces　the　coating　density　and　properties.　©　2025　Elsevier　B.V.

Keyword：

Alloy steel Carbon steel Chromium steel Laser cladding Metal cladding Molybdenum steel Stainless steel Strain hardening

Community：

[ 1 ] [Duan, Bingyan]College of Materials Science and Engineering, Taiyuan University of Technology, Shanxi, Taiyuan; 030024, China
[ 2 ] [Lin, Naiming]College of Materials Science and Engineering, Taiyuan University of Technology, Shanxi, Taiyuan; 030024, China
[ 3 ] [Zhao, Haichao]National Engineering Research Center for Remanufacturing, Army Academy of Armored Forces, Beijing; 100072, China
[ 4 ] [Zhou, Li]National Engineering Research Center for Remanufacturing, Army Academy of Armored Forces, Beijing; 100072, China
[ 5 ] [Zhou, Li]National Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing; 100072, China
[ 6 ] [Wang, Xin]School of Mechanical Engineering and Automation, Fuzhou University, Fujian, Fuzhou; 350116, China
[ 7 ] [Ma, Guozheng]National Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing; 100072, China
[ 8 ] [Wang, Haidou]National Engineering Research Center for Remanufacturing, Army Academy of Armored Forces, Beijing; 100072, China
[ 9 ] [Wang, Haidou]National Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing; 100072, China
[ 10 ] [Shi, Quanxin]Instrumental Analysis Center, Taiyuan University of Technology, Shanxi, Taiyuan; 030024, China
[ 11 ] [Wu, Yucheng]National-Local Joint Engineering Research Centre of Nonferrous Metals and Processing Technology, Hefei University of Technology, Anhui, Hefei; 230009, China

Reprint 's Address：

[lin, naiming]college of materials science and engineering, taiyuan university of technology, shanxi, taiyuan; 030024, china

Email：

linnaiming@tyut.edu.cn

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Source ：

Journal of Alloys and Compounds

ISSN： 0925-8388

Year： 2025

Volume： 1031

5 . 8 0 0

JCR@2023

CAS Journal Grade：2

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WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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机械工程及自动化学院本学院/部未明确归属的数据

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