The effect of heating temperature and holding time on the phase transformation from (Fe, Mn)Al6 to α-Al12(Fe, Mn)3Si in AA3104 aluminum alloy during homogenization was studied by BSE and EDS in SEM. The 3D morphology of the eutectic phases heated at 600 ℃ for different holding times was reconstructed by a novel serial sectioning method. Evolution of the microstructure could be revealed in 3D for the first time. Al spots were observed within the α-Al12(Fe, Mn)3Si phase and counted during different transformation stages. Large number of Al spots disappeared by diffusing into the neighboring matrix after extended heating times, while the volume of the α phase was also decreased at the same time. The microstructure of the α phase after transformation was analyzed, showing ‘duplex interfaces’created by partly transformed particles. The dense holes within α phase particles are believed to promote particle break up during hot rolling of the omogenized material.
ZHANG Yong-Hao
,
ZHANG Zhi-Qing
,
LIU Qiang
. STUDY OF THE PHASE TRANSFORMATION FROM (Fe, Mn)Al6 TO α-Al12(Fe, Mn)3Si IN AA3104 ALUMINUM ALLOY DURING HOMOGENIZATION[J]. Acta Metall Sin, 2012
, 48(3)
: 351
-356
.
DOI: 10.3724/SP.J.1037.2011.00689
[1] Engler O, Kong X W, Yang P. Scr Mater, 1997; 37: 1665
[2] Humphreys F J. Acta Metall, 1977; 25: 1323
[3] Vatne H E, Engler O, Nes E. Mater Sci Technol, 1997; 13: 3
[4] Yang P, Engler O. Acta Metall Sin, 1998; 34: 785
(杨平, Engler O. 金属学报, 1998; 34: 785)
[5] Alexander D T L, Greer A L. Philos Mag, 2004; 84: 3051
[6] Hamerton R, Cama H, Meredith M W. Mater Sci Forum, 000; 331–337: 143
[7] Alexander D T L, Greer A L. Mater Sci Technol, 2005; 1: 955
[8] Gandhi C. Master Dissertation, Vancouver: The University f British Columbia, 1999
[9] Li Y J, Arnberg L. Mater Sci Eng, 2003; A347: 130
[10] Moulin N, Parra–Denis E, Jeulin D, Ducottet C, Bigot A, Boller E, Maire E, Barat C, Kl¨ocker H. Adv Eng Mater, 2010; 12: 20
[11] Skjerpe P. Metall Mater Trans, 1987; 18A: 189
[12] Li Y J, Johansen A, Benum S, Simensen C J, Dons A L, Hakonsen A, Arnberg L. Aluminium, 2004; 80: 578
[13] Sun D L, Kang S B, Koo H S. Mater Chem Phys, 2000; 63: 37
[14] Alexander D T L, Greer A L. Acta Mater, 2002; 50: 2571
[15] Alexander D T L, Greer A L. Philos Mag, 2004; 84: 3071
[16] Fiala J C. J Microsc, 2005; 218: 52
[17] Li Y J, Arnberg L. Acta Mater, 2003; 51: 3415
[18] Sun D L, Kang S B, Koo H S. Chinese J Nonferr Met, 1999; 9: 556
(孙东立, 姜石峰, 高兴锡. 中国有色金属学报, 1999; 9: 556)
[19] Dehmas M, Weisbecker P, Geandier G, Archambault P, Aeby–Gautier E. J Alloys Compd, 2005; 400: 116
[20] Li Y J, Arnberg L. Acta Mater, 2004; 52: 2945
