对新型镍基粉末冶金高温合金FGH98I进行不同工艺热处理,采用场发射扫描电镜和透射电镜等研究了合金中扇形组织的形成和演变.结果表明,FGH98I合金中扇形组织是由手指形二次γ′相枝晶和其间的γ基体组成,其形成具有择域特性,高度过饱和晶界的成分偏聚区可作为非均匀形核核心,通过自身浓度梯度扩散控制其长大、发展.标准时效处理使扇形组织长大和粗化,高温时效处理使扇形,γ′相发生形态失稳,逐渐变成低能状态的稳定立方形状γ′相.
参考文献
| [1] | Kaufnan M J,Voorhees P W,Johnson W C,Biancanniello F S.Metall Trans,1989;20A:2171 |
| [2] | Calderon H A,Kostorz G,Qu Y Y,Dorantes H J,Cruz J J,Cabanas Moreno J G.Mater Sci Eng,1997;A238:13 |
| [3] | Minoru D,Toru M,Teruyaki W.Mater Sci Eng,1984;A67:249 |
| [4] | Via P C,Yu J J.Trans Nonferrous Met Soc China,2005;15(93):90 |
| [5] | Jackson J J,Donachie M J.Metall Trans,1977;8A:1615 |
| [6] | Larson J M,Volin T G,Larson F G.In:Braun J D,Arrowsmith H W,McCall J L,eds.,Microstruct Sci,1997;5:209 |
| [7] | Furrer D U.Scr Mater,1999;40:1215 |
| [8] | Furrer D U.In:CSM,BISC,eds.,Proc 11th Int Symposium on Advanced Superalloys-Production and Application,Shanghai:the Chinese Society for Metals,2007:192 |
| [9] | Mitchell R J,Li H Y,Huang Z W.,J Mater Process Technol,2009;209:1011 |
| [10] | Lu X D,Deng Q,Du J H,Qu J L,Zhuang J Y,Zhong Z Y.,J Alloys Compd,2009;477:100 |
| [11] | Lu X D,Du J H,Deng Q,Zhong Z Y.J Alloys Compd,2009;486:195 |
| [12] | Wu K,Liu G Q,Hu B F.J Univ Sci Technol Beijing,2009;31:722 |
| [13] | Lemsky J.NASA/CR-2004-212950 |
| [14] | Gabb T P,Gayda J.NASA/TM 2005-213649 |
| [15] | Hamid A,Schroers J.Acta Mater,2002;50:89 |
| [16] | Staron P,Kampmann R.Acta Mater,2000;48:701 |
| [17] | Williams D B,Butler E P.Int Mater Rev,1981,26:153 |
| [18] | Staron P,Kampmann R.Acta Mater,2000;48:713 |
| [19] | Mitchell R J,Preuss M.Mater Sci Eng,2008;A473:158 |
| [20] | Doi M,Miyazaki T.Mater Sci Eng,1985;74:139 |
| [21] | Lifshitz I M,Slyozov V V.J Phys Chem Solids,1961;19:35 |
| [22] | Wagner C.Z Electrochem,1961;65:581 |
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