Ti对复杂锰黄铜TL-084组织及性能的影响  

Effects of the Ti on the Microstructure and Properties of Complex Manganese Brass TL-084

作　　者：周冠斌 金勃含 魏作山 张潇 祁复功 丁海民[1,2,3] Zhou Guanbin;Jin Bohan;Wei Zuoshan;Zhang Xiao;Qi Fugong;Ding Haimin(School of Energy Power and Mechanical Engineering,North China Electric Power University,Baoding,Hebei 071003,China;Hebei Key Laboratory of Electric Machinery Health Maintenance&Failure Prevention,Baoding,Hebei 071003,China;Hebei Engineering Research Center for Advanced Manufacturing&Intelligent Operation and Maintenance of Electric Power Machinery,Baoding,Hebei 071003,China;Weiqiao Guoke National Science and Technology Institute of Advanced Technology,Binzhou,Shandong 256606,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003 [2]河北省电力机械装备健康维护与失效预防重点实验室,河北保定071003 [3]电力机械装备先进制造与智能运维河北省工程研究中心,河北保定071003 [4]魏桥国科高等技术研究院,山东滨州256606

出　　处：《机电工程技术》2024年第7期112-118,共7页Mechanical & Electrical Engineering Technology

基　　金：河北省自然科学基金资助项目(E2022502011);保定市基础研究专项项目(2172P005、2372P011)。

摘　　要：以TL-084锰黄铜为研究对象,在原有黄铜生产工艺的基础上引入不同含量的Ti,结合金相分析、XRD分析和SEM分析等手段对其微观组织进行分析,主要探究不同含量Ti的引入对合金基体及基体中硬质相的形貌、尺寸、分布的影响。同时根据对不同Ti含量TL-084锰黄铜的硬度、抗拉强度、耐磨性的测试,探究Ti的引入对合金力学性能的影响。研究发现TL-084黄铜组织的基体为β相,粗大的初生相[Mn(Fe)]_(5)Si_(3)、细小的共晶相Mn_(5)Si_(3)以及在基体中均匀分布的小颗粒状富铅相。在引入Ti元素后,在基体中生成了富Ti相以及以富Ti相为核心的3层核壳结构,对基体中的初生相起到了细化作用,但是基体晶粒反而粗化,随着Ti含量增加到0.3%,基体中产生富Ti相团聚。同时在力学性能上硬度随着Ti元素含量的上升呈先升高后降低的趋势,在添加量为0.2%时其维氏硬度为HV287.2,提升了8.5%;抗拉强度随着随Ti含量的增加也呈现先上升后下降的趋势,其中添加w_(Ti)=0.1%的黄铜棒材的抗拉强度最高,约744.5 MPa,上升了6.75%。Different Ti contents are introduced into the original TL-084 manganese brass production process,and the microstructure of the matrix and hard phases in the alloyare analyzed by using metallographic analysis,XRD,SEM,and other characterization methods.The study focus on the influence of different Ti contents on the morphology,size,and distribution of the hard phases in alloy.Furthermore,the effects of Ti content on the mechanical properties of the alloy are investigated through hardness,tensile strength,and wear resistance tests.It is found that the matrix of TL-084 brass alloy is the β phase,with coarse primary phase[Mn(Fe)]_5Si_3,fine eutectic phase Mn_5Si_3,and small granular lead-rich phase uniformly distributed in the matrix.After the introduction of Ti elements,a Ti-rich phase and a three-layer core-shell structure centered on the Ti-rich phase are formed in the matrix.The refinement process affects the primary phases in the matrix but results in the coarsening of the matrix grains.When the Ti content increases to 0.3%,the Ti-rich phase in the matrix starts to agglomerate.In terms of mechanical properties,the hardness exhibits an increasing trend with increasing Ti content,follows by a decrease.When the Ti addition amount is 0.2%,its Vickers hardness is HV287.2,with an increase of 8.5%.The tensile strength also shows an initial increase and then a decrease with the increase in Ti content.The brass rod with w_(Ti)=0.1%added has the highest tensile strength,which is about 744.5 MPa,with an increase of 6.75%.

关 键 词：TL-084黄铜 TI 硬质相 力学性能 

分 类 号：TH142.3[一般工业技术—材料科学与工程]