W对FeCoCrNiWx高熵合金微观组织和摩擦性能的影响
Effects of W on Microstructure and Friction Properties of FeCoCrNiWx High Entropy Alloys
赵凯 1黄蕾 1赵胜祥 2倪俊杰 1赵性川 1黄宝旭 1马杰 1王长征1
作者信息
- 1. 聊城大学材料科学与工程学院,聊城 252003
- 2. 聊城泰通精工机械科技有限公司,聊城 252003
- 折叠
摘要
采用非自耗真空电弧熔炼炉制备了不同W含量的FeCoCrNiWx系高熵合金.采用X射线衍射仪(XRD)、扫描电镜(SEM)、MFT-EC4000往复型电化学腐蚀摩擦磨损试验仪、显微硬度计以及轮廓测量仪分别对合金的组织结构、形貌、成分分布、显微硬度、摩擦磨损性能进行了测试.结果发现,FeCoCrNiWx高熵合金均具有简单的面心立方体结构(FCC);随着W含量增加,高熵合金由单一的FCC相转变为FCC相+μ相;当x=0.5时,FeCoCrNiW0.5硬度(HV)为196.75,体积磨损量最低,合金具有较好的抗塑性变形能力和较好的耐磨性,强化机制为固溶强化和第二相(μ相)强化.
Abstract
FeCoCrNiWx high entropy alloys with different W contents were prepared by non-consumable vacuum arc melting furnace.The microstructure,morphology,composition distribution,microhardness,friction and wear proper-ties of the alloy were investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM),MFT-EC4000 reciprocating electrochemical corrosion friction and wear tester,microhardness tester and profile tester.The results indicate that FeCoCrNiWx high entropy alloys all exhibit a simple face centered cubic structure(FCC),which is trans-formed from a single FCC phase to FCC phase+μ phase with the increase of W content.When x=0.5,the hardness of FeCoCrNiW0.5 is 196.75 HV,and the volume wear has the minumum value.The alloy possesses desirable plastic deformation resistance and wear resistance,and the strengthening mechanism is dominated by solution strengthening and the second phase(μ phase)strengthening.
关键词
高熵合金/微观组织/磨擦性能Key words
High Entropy Alloys/Microstructure/Friction Properties引用本文复制引用
基金项目
国家自然科学基金资助项目(52174346)
山东省自然科学基金资助项目(ZR2020QE026)
山东省自然科学基金资助项目(ZR2021ME083)
出版年
2024
NETL
NSTL
万方数据