研究了均匀化处理对两种含B的铸造TiAl合金铸造组织的影响.研究发现1370℃/5 min/OQ+1150℃/6 h/AC均匀化热处理能有效消除B2相,将β稳定化元素固溶到基体中,实现成分均匀化;1370℃/5 min/OQ+1 150℃/24 h/AC均匀化热处理后可使粗大的铸造片层组织分解转变为细晶近γ组织,平均晶粒直径50μm.
参考文献
| [1] | Ignacio Gil;Maria A. Munoz-Morris;David G. Morris .The effect of heat treatments on the microstructural stability of the intermetallic Ti-46.5Al-2W-0.5Si[J].Intermetallics,2001(5):373-385. |
| [2] | Soishi Tsuyama;Shinji Mitao;Kuni Mimakawa .Alloymodification of γ-base titanium aluminide for improved oxidation resistance,creep strength and fracture toughness[J].Materials Science and Engineering A,1992,153:451-456. |
| [3] | T. T. Cheng;M. R. Willis .Effects of aging on the microstructure and creep properties of γ-TiAl containing heavy alloying[J].Scripta materialia,1998(9):1255-1265. |
| [4] | Beddoes J.;Au P.;Wallace W.;Zhao L. .THE BRITTLE-DUCTILE TRANSITION IN HIP CONSOLIDATED NEAR GAMMA-TIAL+W AND TIAL+CR POWDER ALLOYS[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1995(0):324-332. |
| [5] | Huang Z W .[J].Scripta Materialia,2005,52:1021. |
| [6] | Huang Z W;Voice W;Bowen P;Winstone MR.Titanium alloys at elevated temperature:structural development and service behavious[M].IOM:The University Press Cambridge,2000:277. |
| [7] | Gil I;Munoz-Morris M A;Morris D G .[J].Intermetallics,2001,9:373. |
| [8] | 李臻熙.TiAl 基合金组合控制对力学性能的影响[M].北京:北京航空材料研究院,2000 |
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