HOT DEFORMATION BEHAVIOR AND MICROSTRUCTURAL STABILITY OF SPRAY FORMED Al-22Si-5Fe ALLOY
Received date: 2010-03-10
Revised date: 2010-05-05
Online published: 2010-07-11
Supported by
Supported by National Basic Research Program of China (No.2006CB605204)
Hot deformation behavior of spray forming Al-22Si-5Fe alloy at different deformation temperatures with isothermal constant strain rates of 0.005, 0.01, 0.03, and 0.05 s-1 was investigated by using Gleeble-1500 thermo-mechanical simulator, with maximum strain of 30%, the microstructures were studied by using of OM and XRD method. The experimental results showed that the hot deformation behavior of spray formed alloy could also be described by a model containing Z parameter (Zener-Hollomon parameter). The calculated deformation activation energy of the studied alloy was consistent with the self-diffusion activation energy of Al atoms at lower deformation temperature, and much higher than the self-diffusion activation energy of Al atoms at higher temperature because of the influences of large content hard constitutes such as prime Si and Fe-bearing intermetallics. The Si particles changed little when deformed at low temperature, but coarsened obviously when deformed at elevated temperature of 698 K or above. The heating temperature had no obvious effect on the sizes of Fe-bearing intermetallics.
SA Yuan-Hua , ZHANG Ji-Shan , LIANG Rui-Guang , SU Tie-Pei . HOT DEFORMATION BEHAVIOR AND MICROSTRUCTURAL STABILITY OF SPRAY FORMED Al-22Si-5Fe ALLOY[J]. Acta Metall Sin, 2010 , 46(7) : 814 -820 . DOI: 10.3724/SP.J.1037.2010.00119
[1] Amano N, Odani Y, Takeda Y, Akechi K. Met Powder Rep, 1989; 44: 186
[2] Hayashi T, Takeda Y, Akechi K, Fujiwara T. Met Powder Rep, 1991; 46: 23
[3] Andrews J B, Seneviratne M V C. AFS Trans, 1984; 92: 209
[4] Hennessey C W, Caley W F, Kipouros G J, Bishop D P. Int J Powder Metall, 2005; 41: 50
[5] Hunt W H. Int J Powder Metall, 2000; 36: 51
[6] Ye H Z. J Mater Eng Perform, 2003; 12: 288
[7] Crepeau P N. AFS Trans, 1995; 103: 361
[8] Dwivedi D K, Sharma A, Rajan T V. Mater Manuf Processes, 2005; 20: 777
[9] Chen C, Liu Z X, Ren B, Wang M X, Weng Y G, Liu Z Y. Trans Nonferrous Met Soc China, 2007; 17: 301
[10] Chang J Y, Moon I, Choi C S. J Mater Sci, 1998; 33: 5015
[11] Huang H J, Cai Y H, Cui H, Huang J F, He J P, Zhang J S. Mater Sci Eng, 2009; A502: 118
[12] Hou L G, Cui H, Cai Y H, Zhang J S. Mater Sci Eng, 2009; A527: 85
[13] Srivastava A K, Srivastava V C, Gloter A, Ojha S N. Acta Mater, 2006; 54: 1741
[14] Shi H F, Yuan X G, Diao X G, Huang H J. Trans Nonferrous Met Soc China, 2007; 17: 710
(时海芳, 袁晓光, 刁晓刚, 黄宏军. 中国有色金属学报, 2007; 17: 710)
[15] Zener C, Hollomon J H. J Appl Phys, 1944; 15: 22
[16] Shi H, McLaren A J, Sellars C M, Shahani R, Bolingbroke R. Mater Sci Technol, 1997; 13: 210
[17] Predel B. In: Madelung O ed., Phase Equilibria, Crystallographic and Thermodynamic Data of Binary Alloys. Berlin: Springer–Verlay, 1994; 5: 1
[18] James F S, Alexander W. Thermodynamic and Kinetic DataMaterials Science and Engineering Handbook. Boca Raton: CRC Press LLC, 2001: 1
[19] Knipling K E, Dunand D C, Seidman D N. Z Metall, 2006; 97: 246
/
| 〈 |
|
〉 |
