通过机械合金化和热压烧结制备了新型Nb-16Si-2Fe原位复合材料.XRD分析表明:制备的复合材料由铌固溶体(Nbss)相、Nb3Si相、Nb5Si3相和Nb4Fe3Si5相组成.各物相的平均品粒尺寸均为3 um,并且呈等轴状.在高于Nb4Fe3Si5固相线温度91℃,有大量的Nb4Fe3Si5液相存在,该复合材料具有良好的超塑性.在1450℃延伸率达到512%.变形后微观组织和DSC分析表明,Nb4Fe3Si5液相的粘性流动是超塑性变形的主要机制.该复合材料的超塑性现象与镁基.铝基复合材料的液相协调超塑性明显不同.
参考文献
| [1] | Edward L A.JOM,1987; 39:22 |
| [2] | Subramanian P R,Parthasarathy T A,Mendiratta M G,Dimiduk D M.Ser Metall,1995; 32:1227 |
| [3] | Maloy S A,Mitchell T E,Heuer A H.Aeta Metall Mater,1994; 43:657 |
| [4] | Dilip M S,Donald L A,David P P,Stephen C.Mater Sci Eng,1995; 192-193:658 |
| [5] | Shah D M,Berczik D,Anton D L,Hecht R.Mater Sci Eng,1992; 155:45 |
| [6] | Anton D L,Short J,Lewandowsky J J.Acta Metall Mater,1995; 43:1955 |
| [7] | Bannister M,Shercliff H,Bao G,Zok F,Ashby M F.Acta Metall Mater,1992; 40:1531 |
| [8] | Schulson E M,Barker D R.Scr Metall,1983; 17:519 |
| [9] | Rigney J D,Singh P M,Lewandowski J.JOM,1992; 44:36 |
| [10] | Jackson M R,Bewlay B P,Rowe R G.JOM,1996; 48:39 |
| [11] | Kim W Y,Hisao T,Akio K.Intermetallics,2001; 9:521 |
| [12] | Chino Y,Kobata M,Iwasaki H,Mabuchi M.Acta Mater,2003; 51:3309 |
| [13] | Kim W J,Hong S H,Lee J H.Mater Sci Eng,2001; 298:166 |
| [14] | Iwasaki H,Mori T,Mabuchi M,Higashi K.Acta Mater,1998; 46:6351 |
| [15] | Koike J,Mabuchi M,Higashi K.Acta Metall Mater,1995; 43:199 |
| [16] | Nieh T G,Wadsworth J,Liu C T,Ohkubo T,Hirotsu Y.Acta Mater,2001; 49:2887 |
| [17] | Mishra R S,Bieler T R,Mukherjee A K.Acta Metall Mater,1995; 43:877 |
| [18] | Higashi K,Nieh T G,Mabuchi M,Wadsworth J.Scr Metall,1995; 32:1079 |
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