Effect of the casting temperature on temperature field and microstructure of A2017 alloy during an innovative continuous semisolid rolling process with a vibrating sloping plate device
- 276 Downloads
In this paper, the effect of temperature field on microstructure of A2017 alloy during an innovative continuous semisolid rolling process with a vibrating sloping plate device was studied. The results show that the alloy temperature decreases gradually from the entrance to the exit of the roll gap. In the backward slip zone, the isothermal lines have twice buckling. In the forward slip zone, the isothermal lines have once buckling. Semisolid region moves forward from the filling mouth to the exit of the roll gap with the increment of casting temperature, and the solid fraction increases from the entrance to the exit of the roll gap. The average grain size of the product increases with the increment of casting temperature, and the plastic deformation along the rolling direction happened obviously. According to the simulation and experiment, the proper casting temperature between 650 and 680 °C is suggested. A2017 alloy strip with good surface quality was obtained. The microstructure of the product is mainly composed of fine spherical or rosette grains which were elongated along rolling direction.
KeywordsSemisolid A2017 Rolling Simulation Temperature Microstructure
Unable to display preview. Download preview PDF.
- 1.Flemings MC (1991) Behavior of metal alloys in the semisolid state. Metall Trans 22A:957–981Google Scholar
- 4.Ji S, Fan Z, Bevis MJ (2001) Semi-solid processing of engineering alloys by a twin-screw rheomoulding process. Mater Sci Eng 299A:210–217Google Scholar
- 7.Midson SP (2006) Rheocasting processes for semi-solid casting of aluminum alloys. Die Cast Eng 50:48–51Google Scholar
- 9.Jin XL, Lei ZS, Yu Z, Mang HB, Deng K, Ren ZM (2011) Physical simulation of Ar bubble behavior in the solid/liquid interface of continuous casting billet. Acta Metall Sin 47:763–768Google Scholar
- 10.Motegi T (2002) Continuous casting of semisoid Mg-9%Al-1%Zn alloy. In: Proceedings of the 7th International Conference Semi-Solid Processing of Alloys and Composites, Tsukuba, Japan, pp 831–836Google Scholar
- 12.Dai AG, Xing SM, He YF (2006) Research on stability of continuous casting of semisolid A356 aluminum alloy by inclined cooling. Foundry 55:239–241Google Scholar
- 13.Cai WH, Yang XJ, Guo HM, Wen RJ, Zhang Y, Li HC (2003) Study in process parameter of preparating rheocasting slurry by the method of cooling slope tube. J Nanchang Univ (Eng Technol Ed) 25:13–17Google Scholar
- 14.Kang YL, Yang XF, Song RB (2001) Microstructure study on semi-solid 60Si2Mn during compressing. J Univ Sci Technol Beijing 8:115–118Google Scholar
- 17.Wang SC (2006) Microstructure evolution of semisolid A2017 alloy prepared by SCR process and extending forming. Dissertation, Northeastern University, ChinaGoogle Scholar
- 18.Guan RG (2003) Simulation and experimental research of manufacturing semisolid A2017 alloy and its forming by SCR technology. Dissertation, Northeastern University, ChinaGoogle Scholar