机械合金化W-Ni-Fe纳米复合粉的制备及结构研究Study on Synthesis and Structure of Mechanically Alloyed W-Ni-Fe Nanocomposite Powders
张中武,周敬恩,席生岐,冉广,李鹏亮,张文兴
摘要(Abstract)：
W、Ni、Fe粉末按照 91 16W 6 5 6Ni2 2 6Fe和 95W5Ni的成分配比进行了机械合金化 (MA) ,通过调整球磨转速、球磨时间等工艺参数研究了其对粉末结构的影响。并对机械合金化粉末的物相、合金化特性、晶粒尺寸、点阵畸变及粉末形貌和颗粒度作了测定和分析讨论。机械合金化使晶粒细化并产生孪晶和位错 ,有利于原子扩散形成过饱和固溶体和非晶 ;高的球磨能有利于形成非晶相、晶粒细化和点阵畸变 ,35 0r min球磨 2 0h后晶粒尺寸可达 2 5nm ;输入的球磨能不同 ,粉末粒度的变化路径不同 ,但都会经历长大 ,变小和稳定三个不同阶段。
关键词(KeyWords)： W-Ni-Fe;机械合金化(MA);纳米复合粉;物性
基金项目(Foundation):
作者(Author): 张中武,周敬恩,席生岐,冉广,李鹏亮,张文兴
参考文献(References)：
- 1 LenelFV .PowderMetallurgy:PrinciplesandApplications[M].MPIF ,Princeton,NJ,1980.
- 2 RabinBH ,GermanRM .Microstructureeffectsontensilepropertiesoftungsten nickel ironcomposites[J].MetallurgicalTransactions,1988,19A(6):1523～1532.
- 3 BoseA ,GermanRM .MicrostructuralrefinementofW NiFeheavyalloysbyalloyingadditons[J].MetallurgicalTransactions,1988,19A :3100～3103.
- 4 GermanRM ,BoseA ,ManiSS .Sintertimeandatmosphereinfluenceonthemicrostructureandmechanicalpropertiesoftungstenheavyalloys[J].MetallurgicalTransactions,1992,23A(1):211～219.
- 5 SongHeung sub,NohJoonWoong,BaekWoonHyung,etal.UndulationofW matrixinterfacebyresinteringofcyclicallyheat treatedW NiFeheavyalloys[J].JournalofMaterialsProcessingTechnology,1997,63:618～623.
- 6 范景莲,黄伯云,张传福,曲选辉.纳米钨合金粉末常压烧结的致密化和晶粒长大[J].中南工业大学学报,2001,32(4):390～393.
- 7 HeZ .W NiFenon crystallinealloys:Thermalstabilityandconsolidationbehavior[D].MichiganTechnologicalUniversity,2001.
- 8 RyuHJ ,etal.Microstructureandmechanicalpropertiesofmechanicallyalloyedandsolid statesinteredtungstenheavyalloys[J].MaterialsScienceandEngineering,2001,A291:91～96.
- 9 HeZ ,CourtneyTH .CrystallizationandthermalstabilityofmechanicallyalloyedW NiFenoncrystallinematerials[J].MaterialsScienceandEngineering,2001,A315:166～173.
- 10 LonnbergB .CharacterizationofmilledSi3N4[J].JournalofMaterialsScience,1994,29:3224～3230.
- 11 HallWH .X raylinebroadeninginmetals[J].Proceedingsofthephysicalsociety,1949,A(62):741～743.
- 12 AningAO ,WangZ ,CourtneyTH .TungstensolutionkineticsandamorphizationofnickelinmechanicallyalloyedNiWalloys[J].ActaMetallurgicaMaterialia,1993,41(1):165～174.
- 13 DavisRM ,McdermottB ,KochCC .Mechanicalalloyingofbrittlematerials[J].MetallurgicalTransactions,1988,19A(12):2867～2874.
- 14 PapirerE ,etal.[J].Theinfluenceofgrindingonthesurfacepropertiesofα aluminas[J].JournalofColloidandInterfaceScience,1993,156:104～108.
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