用平面流铸技术制备了Ni25Al75合金条带,利用XRD,TEM和EDS对快速凝固后的显微组织和微区成分进行了分析.研究表明,Ni-Al合金快速凝固过程中的包晶反应受到了很大程度的抑制,从而影响到快速凝固进程,造成最终相组成中出现了平衡条件下不可能出现的α(Al),并使NiAl3相有效合金浓度和生长速度增加,导致最终相组成中NiAl3相质量分数增加.
参考文献
| [1] | Pohla C;Dyder P L .Crystalline and quasicrystalline phases in rapidly solidified Al-Ni alloys[J].Acta Materialia,1997,45(05):2155-2162. |
| [2] | 巴发海,沈宁福.快速凝固Ni-Al合金中的组成相[J].金属学报,2001(08):845-851. |
| [3] | SHEN Ning-fu;TANG Ya-li;LIANG Chang-hao.Phase structure of rapidly solidified Al-rich Ni-Al precursor alloys for catalysts[A].Warrendale USA,1998:2405-2412. |
| [4] | SHEN Ning-fu;LIANG Chang-hao;LI Jian qiang et al.Effects of solidification kinetics on the phase composition in Ni-Al system[J].郑州工业大学学报,2000,21(02):1-8. |
| [5] | Assadi H;Bath M;Greer A L et al.Kinetic of solidification of intermetallic compounds in the Ni-Al system[J].Acta Materialia,1998,46(02):491-454. |
| [6] | 巴发海,张瑞丰,王东立,沈宁福.测定Ni-Al合金XRD相组成用纯NiAl3的制备工艺[J].钢铁研究学报,2000(05):66-69. |
| [7] | Shao G;Tsakiropoulos P .Prediction of phase select in rapid solidification using time dependent nucleation theory[J].Acta Materialia,1994,42(09):2937-2940. |
| [8] | 巴发海 .快速凝固Ni-Al合金的相组成和凝固动力学研究[D].北京科技大学,2001. |
| [9] | 巴发海,沈宁福,虞钢.连续冷却多阶段快速凝固过程起始形核温度的计算[J].中国有色金属学报,2002(05):878-882. |
| [10] | Trivedi R;Kurz W .Dendritic Growth[J].International Materials Reviews,1994,39:49-74. |
| [11] | Boettinger W J;Coriell S R;Trivedi R.Rapid Solidification Processing: Principle and Technology[M].Claitors Publishing Division Baton Rouge LA,1988:1-3. |
| [12] | Alfred G.DiVenuti .A Free Dendritic Growth Model Accommodating Curved Phase Boundaries and High Peclet Number Conditions[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,1998(12):3047-3056. |
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