基于微观相场模型,模拟研究中间处理+时效处理(1273 K+1073 K)工艺对Ni-15.5%Al-10.5%Cr(原子分数,下同)合金沉淀机制和有序相体积分数的影响.研究发现:经过中间处理,合金沉淀机制为非经典形核长大;而单级时效时,沉淀机制为等成分有序化+失稳分解混合机制.中间处理可得到尺寸较大的沉淀强化相γ'相,有序相体积分数和平均长程序参数有所提高,孕育期比单级时效延长.
参考文献
| [1] | 陈国良.高温合金学[M].北京:冶金工业出版社,1988:5. |
| [2] | 黄乾尧;李汉康.高温合金[M].北京:冶金工业出版社,2000:4. |
| [3] | Huang W;Chang Y A .[J].INTERMETALLICS,1999,7(08):863. |
| [4] | Dupin N.;Sundman B.;Ansara I. .Thermodynamic re-assessment of the ternary system Al-Cr-Ni.[J].Calphad: Computer Coupling of Phase Diagrams and Thermochemistry,2001(2):279-298. |
| [5] | Pareige C.;Martin G.;Blavette D.;Soisson F. .Ordering and phase separation in Ni-Cr-Al: Monte Carlo simulations vs three-dimensional atom probe[J].Acta materialia,1999(6):1889-1899. |
| [6] | Pareige-Schmuck C.;Blavette D.;Soisson F. .Ordering and phase separation in low supersaturated Ni-Cr-Al alloys: 3D atom probe and Monte Carlo simulation[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1):99-103. |
| [7] | Raable D.计算材料学[M].北京:化学工业出版社,2002:10. |
| [8] | Khachatuyran A G.Theory of Structural Transformations in Solids[M].New York:Wiley,1983:23. |
| [9] | Chen Longqing .[J].Scripta Metallurgica et Materialia,1993,29(05):683. |
| [10] | Poduri R;Chen L Q .[J].Acta Materialia,1997,46(05):1719. |
| [11] | Ochiai S;Oya Y;Suzuki T .[J].Acta Materialia,1984,32(02):289. |
| [12] | Marty A;Bessiere M;Bley F .[J].Acta Metallurgica Et Materialia,1990,38(02):345. |
| [13] | Wu Y P;Tso N C;Sanchez J M .[J].Acta Materialia,1989,37(10):2835. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%