选择性激光熔化增强SiC纳米颗粒增强CoCrFeMnNi纳米复合材料摩擦学性能

IF 6.1 1区 工程技术 Q1 ENGINEERING, MECHANICAL
Wear Pub Date : 2025-09-23 DOI:10.1016/j.wear.2025.206358
Asit Kumar Gain , Liangchi Zhang , Zhen Li
{"title":"选择性激光熔化增强SiC纳米颗粒增强CoCrFeMnNi纳米复合材料摩擦学性能","authors":"Asit Kumar Gain ,&nbsp;Liangchi Zhang ,&nbsp;Zhen Li","doi":"10.1016/j.wear.2025.206358","DOIUrl":null,"url":null,"abstract":"<div><div>The CoCrFeMnNi high-entropy alloy (HEA) is distinguished by its superior mechanical properties, machinability and corrosion resistance. However, its relatively low yield strength and inadequate wear resistance constrain its applicability in structural and tribological applications. To address these limitations, this study systematically investigates the incorporation of 5 vol% silicon carbide (SiC) nanoparticles into HEA via a selective laser melting (SLM) process, with the objective of enhancing its microstructural characteristics, mechanical properties and tribological performance. Microstructural analysis reveals that the homogeneous dispersion of SiC nanoparticles (35–50 nm) within both grain interiors and boundaries promotes significant grain refinement, leading to notable improvements in compressive yield strength (55.2 %), nanohardness (72.8 %) and elastic modulus (20.3 %) relative to the plain HEA. Tribological assessment demonstrates a substantial reduction in wear rate, with abrasive wear mechanisms prevailing at low loads. Under elevated loads, the unreinforced HEA undergoes pronounced plastic deformation and oxidation-induced degradation due to frictional heating, whereas the incorporation of SiC nanoparticles mitigates oxidation and induces a self-lubricating effect, thereby enhancing wear resistance. Worn subsurface characterization shows the formation of shear bands, high-density dislocation structures and localized nanohardness increases, elucidating the underlying deformation and wear mechanisms governing the enhanced tribological performance of the nanocomposite. These findings underscore the synergistic role of SiC nanoparticles in refining microstructure, strengthening mechanical properties and improving tribological behavior.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"582 ","pages":"Article 206358"},"PeriodicalIF":6.1000,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancement of tribological performance of SiC nanoparticle-reinforced CoCrFeMnNi nanocomposites produced by selective laser melting\",\"authors\":\"Asit Kumar Gain ,&nbsp;Liangchi Zhang ,&nbsp;Zhen Li\",\"doi\":\"10.1016/j.wear.2025.206358\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The CoCrFeMnNi high-entropy alloy (HEA) is distinguished by its superior mechanical properties, machinability and corrosion resistance. However, its relatively low yield strength and inadequate wear resistance constrain its applicability in structural and tribological applications. To address these limitations, this study systematically investigates the incorporation of 5 vol% silicon carbide (SiC) nanoparticles into HEA via a selective laser melting (SLM) process, with the objective of enhancing its microstructural characteristics, mechanical properties and tribological performance. Microstructural analysis reveals that the homogeneous dispersion of SiC nanoparticles (35–50 nm) within both grain interiors and boundaries promotes significant grain refinement, leading to notable improvements in compressive yield strength (55.2 %), nanohardness (72.8 %) and elastic modulus (20.3 %) relative to the plain HEA. Tribological assessment demonstrates a substantial reduction in wear rate, with abrasive wear mechanisms prevailing at low loads. Under elevated loads, the unreinforced HEA undergoes pronounced plastic deformation and oxidation-induced degradation due to frictional heating, whereas the incorporation of SiC nanoparticles mitigates oxidation and induces a self-lubricating effect, thereby enhancing wear resistance. Worn subsurface characterization shows the formation of shear bands, high-density dislocation structures and localized nanohardness increases, elucidating the underlying deformation and wear mechanisms governing the enhanced tribological performance of the nanocomposite. These findings underscore the synergistic role of SiC nanoparticles in refining microstructure, strengthening mechanical properties and improving tribological behavior.</div></div>\",\"PeriodicalId\":23970,\"journal\":{\"name\":\"Wear\",\"volume\":\"582 \",\"pages\":\"Article 206358\"},\"PeriodicalIF\":6.1000,\"publicationDate\":\"2025-09-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Wear\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0043164825006271\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Wear","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0043164825006271","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0

摘要

CoCrFeMnNi高熵合金(HEA)具有优异的机械性能、可加工性和耐腐蚀性。然而,其相对较低的屈服强度和不充分的耐磨性限制了其在结构和摩擦学应用中的适用性。为了解决这些限制,本研究系统地研究了通过选择性激光熔化(SLM)工艺将5 vol%碳化硅(SiC)纳米颗粒掺入HEA中,以提高其微观结构特征、机械性能和摩擦学性能。显微组织分析表明,SiC纳米颗粒(35-50 nm)在晶粒内部和晶界的均匀分散促进了晶粒的细化,导致抗压屈服强度(55.2%)、纳米硬度(72.8%)和弹性模量(20.3%)相对于普通HEA有显著提高。摩擦学评估表明磨损率大幅降低,磨料磨损机制在低负荷下普遍存在。在高负荷下,未增强的HEA由于摩擦加热而发生明显的塑性变形和氧化降解,而SiC纳米颗粒的加入则减轻了氧化并产生了自润滑效应,从而提高了耐磨性。磨损的亚表面表征显示出剪切带的形成、高密度位错结构和局部纳米硬度的增加,阐明了控制纳米复合材料摩擦学性能增强的潜在变形和磨损机制。这些发现强调了SiC纳米颗粒在细化微观结构、增强力学性能和改善摩擦学行为方面的协同作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Enhancement of tribological performance of SiC nanoparticle-reinforced CoCrFeMnNi nanocomposites produced by selective laser melting

Enhancement of tribological performance of SiC nanoparticle-reinforced CoCrFeMnNi nanocomposites produced by selective laser melting
The CoCrFeMnNi high-entropy alloy (HEA) is distinguished by its superior mechanical properties, machinability and corrosion resistance. However, its relatively low yield strength and inadequate wear resistance constrain its applicability in structural and tribological applications. To address these limitations, this study systematically investigates the incorporation of 5 vol% silicon carbide (SiC) nanoparticles into HEA via a selective laser melting (SLM) process, with the objective of enhancing its microstructural characteristics, mechanical properties and tribological performance. Microstructural analysis reveals that the homogeneous dispersion of SiC nanoparticles (35–50 nm) within both grain interiors and boundaries promotes significant grain refinement, leading to notable improvements in compressive yield strength (55.2 %), nanohardness (72.8 %) and elastic modulus (20.3 %) relative to the plain HEA. Tribological assessment demonstrates a substantial reduction in wear rate, with abrasive wear mechanisms prevailing at low loads. Under elevated loads, the unreinforced HEA undergoes pronounced plastic deformation and oxidation-induced degradation due to frictional heating, whereas the incorporation of SiC nanoparticles mitigates oxidation and induces a self-lubricating effect, thereby enhancing wear resistance. Worn subsurface characterization shows the formation of shear bands, high-density dislocation structures and localized nanohardness increases, elucidating the underlying deformation and wear mechanisms governing the enhanced tribological performance of the nanocomposite. These findings underscore the synergistic role of SiC nanoparticles in refining microstructure, strengthening mechanical properties and improving tribological behavior.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Wear
Wear 工程技术-材料科学:综合
CiteScore
8.80
自引率
8.00%
发文量
280
审稿时长
47 days
期刊介绍: Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信