Synthesis of Nanocrystalline Ag-Cu Supersaturated Solid Solution by Mechanical Alloying

Abstract:

Nanocrystalline Ag-28Cu supersaturated solid solution is prepared by mechanical alloying (MA) using a planetary ball mill. The mechanical alloyed powders are characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM) and differential scanning calorimeter (DSC). XRD patterns show that the main peak of Ag-28Cu supersaturated solid solution exists at about 2θ=39° when the milling time is 30h. HRTEM images show that the grain sizes of as-prepared solid solutions have distributions from 10nm to 15nm. The interplanar spacing of (111) plane for fcc Ag-28Cu supersaturated solid solution is about 2.24Å. DSC measurement result indicates that the melting temperature of Ag-28Cu supersaturated solid solution is 783.8°C. The Ag(Cu) supersaturated solid solutions are in metastable state and they will be transformed into Ag-rich phase and Cu-rich phase simultaneously by annealing at 215°C- 415°C.

• Periodical: Advanced Materials Research (Volume 92)
• Pages: 271-276
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.92.271
• Online since: January 2010
• Authors: Liang Feng Li, Tai Qiu, Jian Yang, Yong Bao Feng
• Keywords: Ag-28Cu, Mechanical Alloying (MA), Nanocrystalline, Solid Solution

References

[1] Q.Y. Zhang and H.S. Zhuang. Braze Welding Manual. (Machine Industry Press, Beijing 1999).

[2] P. Duwez, R.H. Willens and J. W. Klement. J. Appl. Phys. Forum Vol. 31(1960), p.1136.

[3] K. Uenishi, K.F. Kobayashi, K.N. Ishihara and P.H. Shingu. Mater. Sci. Eng., A. Forum Vol. 134 (1991), p.1342.

[4] Z.Q. Li, H. Shen, L. Chen, Y. Li and B. Gunter. J. Phys, D: Appl. Phys. Forum Vol. 29 (1996), p.1373.

[5] Y. Zhu, Y. Qian, M. Zhang, Y. Li and G Zhou. J. Alloys Compd. Forum Vol. 221(1995), p.4.

[6] K. Nakahigashi, H. Ishibashi, S. Minamigawa, and M. Kogachi. J. Appl. Phys. Forum Vol. 31 (1992), p.2293.

[7] L.C. Wei and R.S. Averback. J. Appl. Phys. Forum Vol. 81(1997), p.613.

[8] Z.Q. Li and T.B. Chen. Mater. Charact. Forum Vol. 49(2002), p.67.

[9] J. Lin and L. Meng. J. Alloys Compd. Forum Vol. 454(2008), p.150.

[10] F. Delogu. Acta Mater. Forum Vol. 115(2009), p.641.

[11] C. Suryanarayana. Prog. Mater. Sci. Forum Vol. 46(2001), p.1.

[12] Z.P. Xia, J.J. Shen, Y.Q. Shen and Z.Q. Li. J. Alloys Compd. Forum Vol. 448(2008), p.210.

[13] J.D. Hahn, F. WU and P. Bellon. Metall. Mater. Trans. A. Forum Vol. 35 (2004), p.1105.

[14] P. Nash and A. Nash. ASM Handbook, Alloy Phase Diagram, 3(1992).

[15] M.L. HUANG, C.M.L. WU and J.K.L. LAI. J. Mater. Sci.: -Mater. Electron. Forum Vol. 11 (2000), p.57.

[16] B.Y. Tsaur and J.W. Mayer. Appl. Phys. Lett. Forum Vol. 36(1980), p.823.

[17] N. Saunders and A.P. Miodownik. J. Mater. Sci. Forum Vol. 22(1987), p.629.

[18] F. Fang and M. He. Journal Shanghai Jiaotong University (Sci. ), Forum Vol. 11(2006), p.84.

[19] J.S. Benjamin and M.J. Bomford. Metal. Trans. A. Forum Vol. 8(1977), p.1301.

[20] P.S. Gilman and W.D. Nix. ibid. Forum Vol. 12(1981), p.813.

[21] R. Najafabadi and D. J. Srolovitz. J. Appl. Phys. Forum Vol. 74(1993), p.3144.