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第7期 周云军等：多组元Al TiVCrMnFeCoNiCu高熵合金系室温力学性能 .769. [3]Chen YY.SiY F.Kong F T.et al.Effects of yttrium on mi- crostructure and properties of Ti-23Al-25Nb alloy after heat treat- ment.Rare Met Mater Eng.2006,35(4):655 (陈玉勇，司玉锋，孔凡涛，等.钇对T一23A一25Nb合金热处理 组织及性能的影响.稀有金属材料与工程，2006,35(4)：655) 1.1 20 40 A1原子分数% [4]Cantor B.Chang I T H.Night P K.et al.Microstructural devel- opment in equiatomic multicomponent alloys.Mater Sci Eng A, 图8 Al,TiVCr MnFeCoNiCu合金系相转变示意图（大字体表示 2004,A375/377.213 合金中的主要相) [5]Yeh J W,Chen S K,Gan J Y,et al.Formation of simple crystal Fig.8 Schematic illustration of phase transformation with increasing structures in solid solution alloys with multiprincipal metallic ele- Al content in Al,TiVCrMnFeCo NiCu alloys (the bigger fond means ments.Metall Mater Trans A,2004.35A:2533 main phase) [6]Wang X F,Zhang Y,Qiao Y.et al.Novel microstructure and properties of multi-component CoCrCuFeNiTi,alloys.Inter- 完全脆性断裂，A11及A12两种合金则呈现一定的 metallics:2007,15:357 压缩塑性，其中A12合金塑性应变量为2.35%，合 [7]Zhou Y J.Zhang Y.Wang Y L,et al.Solid solution alloys of 金系具有很高的显微硬度，且随着A1含量的提高， AlCoCrFeNiTi,with excellent roomtemperature mechanical 合金枝晶、枝晶间隙区显微硬度也相应提高，固溶 properties.Appl Phys Lett.2007.90:181904 [8]Yeh J W.Chen S K.Gan J Y.et al.Nanostructured high-en- 强化机制、纳米相弥散强化机制和fcc→bcc相转变 tropy alloys with multi principal elements novel alloy design con 使得合金系具有很高的断裂强度和显微硬度， cepts and outcomes.Ado Eng Mater,2004.6:299 [9]Ranganathan S.Alloyed pleasures:multi-metallic cocktails.Curr 参考文献 Sci,2003,85:1404 [1]Greer A L.Confusion by design.Nature,1993,366:303 [10]Porter K.Easterling K:Phase Trans formation in Metals and [2]Zhou H C.Zhang M C.Bao X Q:et al.Effects of Zr and Nb Alloys.New York:Chapman 8.Hall.1981:308 dopants on the microstructure and magnetic properties of [11]de Boer F R.Pettifor D G.Cohesion in Metals:Transition NdaFeuB/a Fe nanocomposite ribbons.JUniv Sci Technol Bei- Metal Alloys.New York:Elsevier.1988:43 jing,2006,28(4):365 [12]Tong C J.Chen Y L.Chen S K.et al.Microstructure charac- (邹汉昌，张茂才，包小倩，等.Zr和Nb掺杂对Nd2FeuB/aFe terization of Al,CoCrCuFe Ni high entropy alloy system with 纳米复合永磁薄带显微组织和磁性能的影响·北京科技大学学 multi principal elements.Metall Mater Trans A,2005,36A: 报，2006,28(4)：365) 88图8 Al xTiVCrMnFeCoNiCu 合金系相转变示意图（大字体表示 合金中的主要相） Fig．8 Schematic illustration of phase transformation with increasing Al content in Al xTiVCrMnFeCoNiCu alloys （the bigger fond means main phase） 完全脆性断裂Al1及 Al2两种合金则呈现一定的 压缩塑性其中 Al2合金塑性应变量为2∙35％．合 金系具有很高的显微硬度且随着 Al 含量的提高 合金枝晶、枝晶间隙区显微硬度也相应提高．固溶 强化机制、纳米相弥散强化机制和 fcc→bcc 相转变 使得合金系具有很高的断裂强度和显微硬度． 参 考 文 献 ［1］ Greer A L．Confusion by design．Nature1993366：303 ［2］ Zhou H CZhang M CBao X Qet al．Effects of Zr and Nb dopants on the microstructure and magnetic properties of Nd2Fe14B／α—Fe nanocomposite ribbons．J Univ Sci Technol Beijing200628（4）：365 （邹汉昌张茂才包小倩等．Zr 和 Nb 掺杂对 Nd2Fe14B／α—Fe 纳米复合永磁薄带显微组织和磁性能的影响．北京科技大学学 报200628（4）：365） ［3］ Chen Y YSi Y FKong F Tet al．Effects of yttrium on microstructure and properties of T-i23A-l25Nb alloy after heat treatment．Rare Met Mater Eng200635（4）：655 （陈玉勇司玉锋孔凡涛等．钇对 Ti—23Al—25Nb 合金热处理 组织及性能的影响．稀有金属材料与工程200635（4）：655） ［4］ Cantor BChang I T HNight P Ket al．Microstructural development in equiatomic multicomponent alloys．Mater Sci Eng A 2004A375／377：213 ［5］ Yeh J WChen S KGan J Yet al．Formation of simple crystal structures in solid solution alloys with multiprincipal metallic elements．Metall Mater T rans A200435A：2533 ［6］ Wang X FZhang YQiao Yet al．Novel microstructure and properties of mult-i component CoCrCuFeNiTi x alloys． Intermetallics200715：357 ［7］ Zhou Y JZhang YWang Y Let al．Solid solution alloys of AlCoCrFeNiTi x with excellent room-temperature mechanical properties．Appl Phys Lett200790：181904 ［8］ Yeh J WChen S KGan J Yet al．Nanostructured high-entropy alloys with multi principal elements-novel alloy design concepts and outcomes．A dv Eng Mater20046：299 ［9］ Ranganathan S．Alloyed pleasures：mult-i metallic cocktails．Curr Sci200385：1404 ［10］ Porter KEasterling K：Phase T rans-formation in Metals and Alloys．New York：Chapman ＆ Hall1981：308 ［11］ de Boer F RPettifor D G．Cohesion in Metals：T ransition Metal Alloys．New York：Elsevier1988：43 ［12］ Tong C JChen Y LChen S Ket al．Microstructure characterization of Al xCoCrCuFe Ni high entropy alloy system with mult-i principal elements．Metall Mater T rans A200536A： 88 第7期 周云军等： 多组元 Al xTiVCrMnFeCoNiCu 高熵合金系室温力学性能 ·769·