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在自由落体条件下实现了液态Al-4 wt.%Ni亚共晶、Al-5.69 wt.%Ni共晶和Al-8 wt.%Ni过共晶合金的深过冷与快速凝固. 计算表明, (Al+Al3Ni)规则纤维状共晶的共生区是4.8–15 wt.%Ni成分范围内不闭合区域, 且强烈偏向Al3Ni相一侧. 实验发现, 随液滴直径的减小, 合金熔体冷却速率和过冷度增大, (Al)和Al3Ni相枝晶与其共晶的竞争生长引发了Al-Ni 共晶型合金微观组织演化. 在快速凝固过程中, Al-4 wt.%Ni亚共晶合金发生完全溶质截留效应, 从而形成亚稳单相固溶体. 当过冷度超过58K时, Al-5.69 wt.%Ni 共晶合金呈现从纤维状共晶向初生(Al) 枝晶为主的亚共晶组织演变. 若过冷度连续增大, Al-8 wt.%Ni过共晶合金可以形成全部纤维状共晶组织, 并且最终演变为粒状共晶.
[1] Clopet C R, Cochrane R F, Mullis A M 2013 Appl. Phys. Lett. 102 031906
[2] Matthews T S, Sawyer C, Ogletree D F, Liliental-Weber Z, Chrzan D C, Wu J Q 2012 Phy. Rev. Lett. 108 096102
[3] Wu M W, Xiong S M 2011 Acta Phys. Sin. 60 058103 (in Chinese) [吴孟武, 熊守美 2011 物理学报 60 058103]
[4] Pasturel A, Tasci E S, Sluiter M H F, Jakse N 2010 Phys. Rev. B 81
[5] Yang Y J, Wang J C, Zhang Y X, Zhu Y C, Yang G C 2009 Acta Phys. Sin. 2797 [杨玉娟, 王锦程, 张玉祥, 朱耀产, 杨根仓 2009 物理学报 58 2797]
[6] Park J M, Sohn S W, Kim D H, Kim K B, Kim W T, Eckert J 2008 Appl. Phys. Lett. 92 091910
[7] Lu Y P, Lin X, Yang G C, Li J J, Zhou Y H 2008 J. Appl. Phys. 104 013535
[8] Zhou S, Li J F, Liu L, Zhou Y H 2009 Chin. Phys. B 18 1674
[9] Zhu Y C, Wang J C, Yang G C, Zhao D W 2007 Chin. Phys. 16 805
[10] Lv Y J, Wei B B 2003 Chin. Phys. Lett. 20 1379
[11] Yang T Y, Wu S K, Shiue R K 2001 Intermetallics 9 341
[12] Chrifi-Alaoui F Z, Nassik M, Mahdouk K, Gachon J C 2004 J. Alloy. Compd. 364 121
[13] Silva B L, Araujo J C, Silva W S, Goulart P R, Garcia A, Spinelli J E 2011 Phil. Mag. Lett. 91 337
[14] Chang J, Wang H P, Wei B 2008 Phil. Mag. Lett. 88 821
[15] Nishiyama N, Takenaka, Inoue A 2006 Appl. Phys. Lett. 88 121908
[16] Liu J, Zhao J Z, Hu Z Q 2006 Appl. Phys. Lett. 89 031903
[17] Trivedi R, Magnin P, Kurz W 1987 Acta Metall. 35 971
[18] Lipton J, Kurz W, Trivedi R 1987 Acta Metall. 35 957
[19] Boetinger W J, Coriell S R, Trivedi R 1987 in: R. Mehrabian (Eds.), Proceedings of the Fourth Conference on Rapid Solidification Processing, Principles and Technologies, Claitors, Baton Rouge p13
[20] Yan N, Wang W L, Dai F P, Wei B 2011 Acta Phys. Sin. 60 034602 (in Chinese) [闫娜, 王伟丽, 代富平, 魏炳波 2011 物理学报 60 034602]
[21] Tournier S, Vinet B, Pasturel A, Ansara I, Desre P J 1998 Phys. Rev. B 57 3340
[22] Cortella L, Vinet B, Desre P J, Pasturel A, Paxton A T, Vanschilfgaarde M 1993 Phy. Rev. Lett. 70 1469
[23] Levi C G, Mehrabian R 1990 Metall. Trans. 21 59
[24] Aziz M J 1982 J. Appl. Phys. 53 1158
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[1] Clopet C R, Cochrane R F, Mullis A M 2013 Appl. Phys. Lett. 102 031906
[2] Matthews T S, Sawyer C, Ogletree D F, Liliental-Weber Z, Chrzan D C, Wu J Q 2012 Phy. Rev. Lett. 108 096102
[3] Wu M W, Xiong S M 2011 Acta Phys. Sin. 60 058103 (in Chinese) [吴孟武, 熊守美 2011 物理学报 60 058103]
[4] Pasturel A, Tasci E S, Sluiter M H F, Jakse N 2010 Phys. Rev. B 81
[5] Yang Y J, Wang J C, Zhang Y X, Zhu Y C, Yang G C 2009 Acta Phys. Sin. 2797 [杨玉娟, 王锦程, 张玉祥, 朱耀产, 杨根仓 2009 物理学报 58 2797]
[6] Park J M, Sohn S W, Kim D H, Kim K B, Kim W T, Eckert J 2008 Appl. Phys. Lett. 92 091910
[7] Lu Y P, Lin X, Yang G C, Li J J, Zhou Y H 2008 J. Appl. Phys. 104 013535
[8] Zhou S, Li J F, Liu L, Zhou Y H 2009 Chin. Phys. B 18 1674
[9] Zhu Y C, Wang J C, Yang G C, Zhao D W 2007 Chin. Phys. 16 805
[10] Lv Y J, Wei B B 2003 Chin. Phys. Lett. 20 1379
[11] Yang T Y, Wu S K, Shiue R K 2001 Intermetallics 9 341
[12] Chrifi-Alaoui F Z, Nassik M, Mahdouk K, Gachon J C 2004 J. Alloy. Compd. 364 121
[13] Silva B L, Araujo J C, Silva W S, Goulart P R, Garcia A, Spinelli J E 2011 Phil. Mag. Lett. 91 337
[14] Chang J, Wang H P, Wei B 2008 Phil. Mag. Lett. 88 821
[15] Nishiyama N, Takenaka, Inoue A 2006 Appl. Phys. Lett. 88 121908
[16] Liu J, Zhao J Z, Hu Z Q 2006 Appl. Phys. Lett. 89 031903
[17] Trivedi R, Magnin P, Kurz W 1987 Acta Metall. 35 971
[18] Lipton J, Kurz W, Trivedi R 1987 Acta Metall. 35 957
[19] Boetinger W J, Coriell S R, Trivedi R 1987 in: R. Mehrabian (Eds.), Proceedings of the Fourth Conference on Rapid Solidification Processing, Principles and Technologies, Claitors, Baton Rouge p13
[20] Yan N, Wang W L, Dai F P, Wei B 2011 Acta Phys. Sin. 60 034602 (in Chinese) [闫娜, 王伟丽, 代富平, 魏炳波 2011 物理学报 60 034602]
[21] Tournier S, Vinet B, Pasturel A, Ansara I, Desre P J 1998 Phys. Rev. B 57 3340
[22] Cortella L, Vinet B, Desre P J, Pasturel A, Paxton A T, Vanschilfgaarde M 1993 Phy. Rev. Lett. 70 1469
[23] Levi C G, Mehrabian R 1990 Metall. Trans. 21 59
[24] Aziz M J 1982 J. Appl. Phys. 53 1158
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