采用低温高能球磨法和热等静压技术制备出细晶Ti-45Al-2Cr-2Nb-1B合金,采用XRD、TEM对热等静压烧结后组织形貌进行分析,采用INSTRON 4200型拉伸试验机对热等静压后的材料进行拉伸性能测试.研究表明,在不同条件下烧结,其相组成为γ-TiAl和少量Ti3Al,晶粒尺寸为细晶结构(低于500 nm).对块体材料进行室温和高温拉伸试验,研究表明室温具有很低的塑性,认为粉末间没有很好的结合:850℃高温拉伸试验,强度为60～80 MPa、延伸率为63%～101%,具有很好的塑性,表现出很好的高温可成形性.这表明,可以在800～900℃条件对钛铝烧结块进行二次加工(锻造或轧制)获得致密高强度的细晶钛铝块体或板材;对热等静压制备的TiAl的可成形性进行了讨论.
参考文献
| [1] | Kim Y W .[J].Journal of the Minerals,Metals & Materials Society,1994,46(07):30. |
| [2] | Helmut Clemens;Heinrich Kestler .Processing and applications of intermetallic γ-TiAl-based alloys[J].Advanced Engineering Materials,2000(9):551-570. |
| [3] | Froes F H et al.[J].Journal of Materials Science,1992,27:5113. |
| [4] | Dimiduk DM .Gamma titanium aluminide alloys--an assessment within the competition of aerospace structural materials[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(2):281-288. |
| [5] | Liu C T et al.[J].Intermetallics,1997,5(08):579. |
| [6] | Appel F et al.[J].Materials Science and Engineering,1998,R22:187. |
| [7] | Trivedi P B et al.[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2002,33A:2729. |
| [8] | Kim Y W.[A].Beijing:ISAM,2000:11. |
| [9] | 刘峰晓,贺跃辉,刘咏,黄伯云,李智.粉末冶金制备TiAl基合金板材的研究现状及趋势[J].稀有金属材料与工程,2005(02):169-173. |
| [10] | Prajina Bhattarya et al.[J].Journal of Alloys and Compounds,2004,368:187. |
| [11] | Oehring M et al.[J].Journal of Materials Research,1993,8:2819. |
| [12] | Zhang F.;Lu L. .Study of thermal stability of mechanically alloyed Ti-75percent Al powders[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(1/2):211-218. |
| [13] | Ulrike Habel;Brian J. McTiernan .HIP temperature and properties of a gas-atomized gamma-titanium aluminide alloy[J].Intermetallics,2004(1):63-68. |
| [14] | Gerling R et al.[J].Intermetallics,2004,12:275. |
| [15] | Zhao L et al.[J].Materials and Manufacturing Processes,1994,9:695. |
| [16] | Gefling R et al.[J].Advances in Engineering Materials,2004,6:23. |
| [17] | 陈玉勇,于宏宝,张德良,孔凡涛.低温高能球磨Ti/Al复合粉显微组织结构演化[J].稀有金属材料与工程,2008(02):236-239. |
| [18] | Eric A et al.[J].Scripta Materialia,1999,40(08):899. |
| [19] | Oh J.;Pyo SG.;Lee S.;Kim NJ. .Fabrication of multilayered titanium aluminide sheets by self-propagating high-temperature synthesis reaction using hot rolling and heat treatment[J].Journal of Materials Science,2003(17):3647-3651. |
| [20] | Rahaman M N et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2003,A360:169. |
| [21] | Toshihiro H et al.[J].Materials Transactions-Japan Institute of Metals,1998,39(07):724. |
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