采用铁、铝、钛、硼四元粉体机械合金化与后续热处理的方法合成纳米TiB2/Fe3Al复合粉体,并利用XRD、DSC、SEM和TEM等对粉体进行了表征.结果表明:在球磨过程中,四元粉体形成了Fe(Al,Ti,B)过饱和固溶体,有序度不断降低,逐渐向非晶态转变,同时粉体晶粒尺寸逐渐细化,球磨40 h后Fe(Al,Ti,B)的晶粒尺寸为9.6 nm并在热处理过程中Fe(Al,Ti,B)分解生成纳米Fe3Al和TiB2复合粉体,同时发生组成相晶粒生长,结构有序度提高等转变.
参考文献
| [1] | Fores F H.Synthesizing processing,and modeling advanced materials[J].Journal of The Minerals,Metals & Materials Society,1992(02):9-10. |
| [2] | Liu C T;Stiegler J O;Froes F H.Ordered-intermetallic[A].OH:ASM,1990:913-942. |
| [3] | Stoloff N S .Ordered alloys-physical metallurgy and structural application[J].International Metals Reviews,1984,29(03):125-135. |
| [4] | Huang B;Ishihara K N;Shingu P H .Metastable phases of Al-Fe system by mechanical alloying[J].Materials Science and Engineering A,1997,231:72-79. |
| [5] | Kuang J P .Microstructures and mechanical properties of an investment cast gama titanium aluminide[J].Materials Science and Technology,1999,15:840-850. |
| [6] | Semiatin S L .Plastic-flow behavior and microstructural development in a cast alpha-two titanium aluminide[J].Metallurgical and Materials Transactions,1992,23A:295-305. |
| [7] | Shah D M.Intermetallic compounds:structure and properties[J].Journal of The Minerals,Metals & Materials Society,1992(02):6-7. |
| [8] | Hiroshi Kimura;Shinichi Kobayashi .Formation and Characteristics of Nano-Crystalline TiAl[J].Materials Transactions, JIM,1995(7):982-987. |
| [9] | Ko SH.;Park BG.;Hashimoto H.;Abe T.;Park YH. .Effect of MA on microstructure and synthesis path of in-situ TiC reinforced Fe-28at.% Al intermetallic composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(0):78-83. |
| [10] | Kranowski M;Witek A;Kulik T.The FeAl-30%TiC nanocomposite produced by mechanical alloying and hot-pressing consoldation[J].Intermetallics,2002(10):371-376. |
| [11] | 孙康宁;尹衍升;李爱民.金属间化合物/陶瓷基复合材料[M].北京:机械工业出版社,2002 |
| [12] | Park B-G.;Ko .In Situ Formation of TiC and TiB_2 in the Fe_3All Matrix by MA-PDS Process[J].粉体ぉょび粉末冶金,2000(10):1080-1084. |
| [13] | Kranowski M;Witek A;Kulik T.The FeAl-30%TiC nanocomposite produced by mechanical alloying and hot-pressing consolidation[J].Intermetallics,2002(10):371-376. |
| [14] | 汤文明,郑治祥,吴玉程,唐红军,董季玲.机械合金化过程中Fe75 Al25二元系统的结构演变[J].材料热处理学报,2004(03):18-21. |
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