The feasibility of fabricating ZL104 aluminum alloy with non-dendritic microstructure by semi-solid isothermal heat treatment process and the effects of holding temperature and time on the semi-solid isothermal heat-treated microstructure of the alloy, are investigated. The research results indicate that it is possible to produce ZL104 alloy with non-dendritic microstructure by a suitable semi-solid isothermal heat treatment. After treated at 580 ℃ for 120 min, the ZL104 alloy can obtain a non-dendritic microstructure with an 49% liquid content and an average size range of 115 μm of the unmelted primary solid particles. In addition, an increase in the holding time from 30 to 120 min for a given holding temperature of 580 ℃ or in the holding temperature from 570 to 580 ℃ for a given holding time of 120 min causes the average size and globular tendency of unmelted primary solid particles in the semi-solid ZL104 alloy to decrease and become more obvious, respectively.
参考文献
[1] | Du X H;Zhang E L .[J].Materials Letters,2007,61:2333. |
[2] | Flemings M C .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1991,22:957. |
[3] | Chen T J;Ma Y;Hao Y et al.[J].Transactions of Nonferrous Metals Society of China,2001,11:98-102. |
[4] | Chen T J;Hao Y;Sun J et al.[J].Science and Technology of Advanced Materials,2003,4:495. |
[5] | Kim J M;Kim K T;Jung W J .[J].Materials Science and Technology,2002,18:698. |
[6] | Bai B Z;Li J G;Zheng Y K .[J].Rare Metals,2002,21(03):224. |
[7] | Li J G;Ma H T;Zhang B Q et al.[J].Acta Metallurgica Sinica,2000,39(06):579. |
[8] | Wang J L;Su Y H;Tsao C Y A .[J].Scripta Materialia,1997,37:2003. |
[9] | Czerwinski F .The processing phenomena of semisolid Mg-9% Al-1% Zn alloy at ultra high contents of the unmelted phase[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):51-61. |
[10] | Zhang Q Q;Cao Z Y;Zhang Y F et al.[J].Journal of Materials Processing Technology,2007,184:195. |
[11] | Lashkari O;Nafisi S;Langlais J et al.[J].Journal of Materials Processing Technology,2007,182:95. |
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