Al含量对等值锌当量耐磨黄铜组织及性能的影响  

Effect of Al Content on Microstructure and Properties of Equal Value ZincEquivalent Wear-resistant Brass

作　　者：王雪松[1,2] 周兵 戴姣燕[2] 徐金富[2] WANG Xuesong;ZHOU Bing;DAI Jiaoyan;XU Jinfu(Institute of New Carbon Materials,Taiyuan University of Technology,Taiyuan 030024,China;School of Materials and Chemical Engineering,Ningbo Institute of Engineering,Ningbo 315211,China)

机构地区：[1]太原理工大学新型碳材料研究院,太原030024 [2]宁波工程学院材料与化学工程学院,宁波315211

出　　处：《材料导报》2021年第20期20124-20128,共5页Materials Reports

基　　金：宁波2025科技重大项目(2019B10084)。

摘　　要：为研究Al含量对耐磨黄铜组织、力学性能及摩擦磨损性能的影响,制备了三种不同Al含量(1.3%Al、2.4%Al、3.6%Al,均为质量分数)等值锌当量的耐磨黄铜合金;利用光学显微镜(OM)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)、拉伸试验机及摩擦磨损试验机对三种耐磨黄铜的组织、力学性能和摩擦磨损性能进行了观察与研究。结果表明,合金的组织为α相、β相、共晶组织强化相及初生强化相,当锌当量不变时,随着Al含量增加,α相区、β相区面积基本相同,共晶组织强化相数量增加,初生强化相数量减少,导致强化相晶粒平均尺寸减小。随着Al含量的增加,合金的硬度、抗拉强度、屈服强度分别提高了31.6%、22.4%、67.3%,延伸率及磨损率分别下降了64.2%及40.8%。In order to study the effect of Al content on the microstructure,mechanical properties and friction and wear properties of wear-resistant brass,three kinds of wear-resisting brass alloys with different Al content(1.3wt%Al,2.4wt%Al,3.6wt%Al)and equivalent zinc were prepared.The microstructure,mechanical properties and friction and wear properties of three kinds of wear-resistant brass were observed and studied by optical microscope(OM),scanning electron microscope(SEM),X-ray diffraction(XRD),tensile testing machine and friction and wear testing machine.The results show that the microstructure of the alloy isαphase,βphase,eutectic phase strengthening phase and primary strengthening phase.When the zinc equivalent remains unchanged,αphase andβphase are basically the same with the increase of Al content,the number of eutectic phase strengthening phase increases and the number of primary strengthening phase decreases,resulting in the decrease of the average grain size of the strengthening phase.With the increase of Al content,the hardness、tensile strength and yield strength of the alloy increased by 31.6%,22.4%and 67.3%respectively,and the elongation and wear rate decreased by 64.2%and 40.8%respectively.

关 键 词：AL含量 锌当量 耐磨黄铜 组织 性能 

分 类 号：TG146.1[一般工业技术—材料科学与工程]