砖-泥结构Ti_(Al_(3)Ti-AlTi_(3))微叠层复合材料的组织和力学性能.docxVIP

第54卷第7期2025年4月

热加工工艺

HotWorkingTechnology

ISSN1001-3814CN61-1133/TG

DOI:10.14158/j.cnki.1001-3814.先进材料 rjggy@

砖-泥结构Ti/(Al3Ti-AlTi3)微叠层复合材料的组织和力学性能

景栋1,孟令刚1,2,刘运峰2,许金琛1,张兴国1,2

(1.大连理工大学材料科学与工程学院,辽宁大连116024;2.大连理工大学宁波研究院,浙江宁波315016)

摘要院采用真空热压烧结法制备了砖-泥结构Ti/渊Al3Ti-AlTi3冤微叠层复合材料遥利用XRD尧EPMA和SEM对复合材料的组成相和显微组织进行了表征袁并通过与层状结构Ti/渊Al3Ti-AlTi3冤微叠层复合材料进行对比袁研究了组元复合结构对微叠层材料弯曲性能的影响遥结果表明院砖-泥结构Ti/渊Al3Ti-AlTi3冤微叠层复合材料中袁Al3Ti和AlTi3形成了多边形薄片组织袁薄片在复合材料中交错堆叠分布袁薄片中心为Al3Ti层袁层厚76滋m曰薄片外层为AlTi3袁层厚40滋m袁薄片长度1～2mm袁相邻薄片间通过韧性的Ti连接遥相比于层状结构微叠层复合材料袁砖-泥结构复合材料抗弯强度和失效应变分别提升了82%和25%袁弯曲强度为675.6MPa袁弯曲失效应变为7%遥

关键词院砖-泥结构曰微叠层复合材料曰显微组织曰弯曲性能

中图分类号院TB333.1 文献标识码院A 文章编号院1001-3814(2025)07-0070-05

MicrostructureandMechanicalPropertiesofTi/(Al3Ti-AlTi3)LaminateCompositeswithBrickandMortarStructure

JINGDong1,MENGLinggang1,2,LIUYunfeng2,XUJinchen1,ZHANGXingguo1,2

(1.SchoolofMaterialsScienceandEngineering,DalianUniversityofTechnology,Dalian116024,China;2.NingboInstituteofDalianUniversityofTechnology,Ningbo315016,China)

Abstract院Ti/(Al3Ti-AlTi3)laminatecompositeswithbrickandmortarstructurewerepreparedbyvacuumhotpressingsinteringmethod.ThephaseandmicrostructureofthecompositeswerecharacterizedbyXRD,EPMAandSEM.TheeffectsofthecompositestructureonthebendingpropertyofthecompositeswerestudiedbycomparingwiththelayeredstructureTi/(Al3Ti-AlTi3)laminatecomposites.Theresultsshowthatinthebrick-and-mortarstructureTi/(Al3Ti-AlTi3)laminatecomposites,Al3TiandAlTi3formpolygonalplateletstructure,andtheplateletsareinterlacedanddistributedinthecomposites.ThecenteroftheplateletistheAl3Tilayerwithathicknessof76滋m,theouterlayeroftheplateletistheAlTi3layerwithathicknessof40滋m,andthelengthoftheplateletis1-2mm.TheadjacentplateletsareconnectedbyductileTi.Comparedwiththoseofthelayeredstructurelaminateco