基于共格应变的微观弹性理论和微观相场动力学模型,模拟了Ni75AlxV25-x合金沉淀过程的组织演化和粗化行为.结果表明:两种沉淀相颗粒在粗化阶段均表现出明显的取向性.θ相(Ni3V)沿[100]方向的生长趋势明显超过[001]方向,γ′相(Ni3Al)沿<001>方向排列.二相析出顺序与Al含量有关,先析出相的长大和粗化两个阶段比较分明,后析出相的长大和粗化过程同时进行.两种有序相发生粗化以相邻颗粒碰撞并融合为较大颗粒的方式进行.不同浓度的合金两相析出先后顺序及体积分数不同,但最终形貌基本一致,两相均呈长方块状分布,并且具有(001)θ//{100}γ′的取向关系.
参考文献
| [1] | Tomihisa K,Kaneno Y,Takasugi T.Intermetallics,2004;12:317 |
| [2] | Hagihara K,Nakano T,Umakoshi Y.Scr Mater,2003; 48:577 |
| [3] | Ni Y,He L H,Yin L.Mater Chem Phys,2002; 78:442 |
| [4] | Wen Y H,Wang Y,Chen L Q.Philos Mag,2000; 80A:1967 |
| [5] | Vaithyanathan V,Chen L Q.Acta Mater,2002; 50:4061 |
| [6] | Khachaturyan A G.Theory of Structural Transformation in Solids.New York:Wiley,1983:139 |
| [7] | Jiang Z H,Wang Y X,Chen Z.Acta Metall Sin,2004; 40:616(江志华,王水欣,陈铮.金属学报,2004;40:616) |
| [8] | Li X L,Chen Z,Liu X G,Liu B.Acta Metall Sin,2002;38:458(李晓玲,陈铮,刘晓光,刘兵.金属学报,2002;38:458) |
| [9] | Li Y S,Chen Z,Lu Y L,Wang Y X.J Mater Sci Technol,2005; 21:395 |
| [10] | Pareige C,Blavette D.Scr Mater,2001; 44:243 |
| [11] | Marteau L,Pareige C,Blavette D.J Microsc,2001; 204:247 |
| [12] | Chen L Q.Scr Metall Mater,1993; 29:683 |
| [13] | Khachaturyan A G.Theory of Structural Transformation in Solids.New York:Wiley,1983:57 |
| [14] | Onuki A.J Phys Soc Jpn,1989; 58:3065 |
| [15] | Wang Y,Khachaturyan A G.Acta Metall Mater,1995;43:1837 |
| [16] | Prikhodko S V,Carnes J D,Isaak D G,Ardell A J.Scr Mater,1998; 38:67 |
| [17] | Wen Y H,Simmons J P,Shen C.Acta Mater,2003; 51:1123 |
| [18] | Su C H,Voorhees P W.Acta Mater,1996; 44:1987 |
| [19] | Sequera A D,Calderon H A,Kostotz G.Scr Metall Mater,1994; 30:7 |
| [20] | Takeyama M,Kikuchi M.Intermetallic,1998; 6:573 |
| [21] | Orlikowski D,Sagui C,Somoza A,Roland C.Phys Rev,1999; 59B:8646 |
| [22] | Langer J S,Schwartz A J.Phys Rev,1980; 21A:948 |
| [23] | Wang Y,Banerjee D,Su C C,Khachaturyan A G.Acta Mater,1998; 46:2983 |
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%