用定向凝固方法在不同的生长速度下成功地制备了一批γ-TiAl定向凝固试样.通过对不同生长速率下形成的γ-TiAl金相组织观察和分析后发现:随着生长速率的增加,原先的初生稳定相β相的数量逐渐减少,亚稳相α相的数量逐渐增加;最后形成的由α2和γ组成的片层组织的片层间距λ与生长速率的V1/3近似成反比关系.
参考文献
| [1] | Shibue Kazuhisa M;Kim M S;Kumagai et al.Activity of R&D on γ-TiAl in SLM[J].Sumitomo Light Metal Technical Reports,1994,35:210. |
| [2] | Kim Y W .Gamma titanium aluminides:their status and future[J].Journal of The Minerals,Metals & Materials Society,1995,47:39. |
| [3] | 钛铝金属间化合物及其应用[J].材料开发与应用,1994(04):47. |
| [4] | Inui H;Oh M H;Nakmura A et al.Room-temperature tensile deformation of polysynth- etically twinned (PST) crystals of TiAl[J].Acta Materialia,1992,40(11):3095. |
| [5] | Kishida K;Johnson D R;Masuda Y et al.Deformation and fracture of PST crystals and directionally solidified ingots of TiAl-based alloys[J].Intermetallics,1998,6(7-8):679. |
| [6] | I.-S. Jong;M.-C. Kim .High temperature phase equilibria near Ti-50at% Al composition in Ti-Al system studied by directional solidification[J].Intermetallics,1999(11):1247-1253. |
| [7] | 陈国良;林均品.有序金属间化合物结构材料[M].北京:冶金工业出版社,1998:35. |
| [8] | Louchev Oleg A;Zaletin Victor M .The influence of solid phase conductive resistance on vapor growth of α-HgI2 crystals[J].Journal of Crystal Growth,1995,148(1-2):125. |
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