FINITE ELEMENT SIMULATION OF HOT ROLLING PROCESS FOR SiCp/Al COMPOSITES

doi:10.11900/0412.1961.2015.00210

Acta Metall Sin

2015, Vol. 51

Issue (7): 889-896 DOI: 10.11900/0412.1961.2015.00210

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FINITE ELEMENT SIMULATION OF HOT ROLLING PROCESS FOR SiCp/Al COMPOSITES

Li ZHOU^1,²,Changzhou WANG¹,Xingxing ZHANG²,Bolü XIAO²,Zongyi MA²(

)

1 School of Mechanical Engineering, Shenyang Ligong University, Shenyang 110159
2 Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang110016

Cite this article:

Li ZHOU,Changzhou WANG,Xingxing ZHANG,Bolü XIAO,Zongyi MA. FINITE ELEMENT SIMULATION OF HOT ROLLING PROCESS FOR SiCp/Al COMPOSITES. Acta Metall Sin, 2015, 51(7): 889-896.

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Abstract

In this work, the hot rolling process of SiCp/2009Al composites is simulated using the fully coupled thermal-stress analysis in Abaqus/Explicit. By the investigation of formation process for rolling along with different fields of temperature, strain rate, strain and stress and their evolutionary history, the hot rolling mechanisms under complicated stress states is achieved. The results show that the maximum principal stress changes from compressive stress to tensile stress at the stage of rolling entrance and a reverse trend replaces it at the exit, and that the compressive stress is dominant in the deformation zone at the steady rolling stage. The temperature drop effect due to heat transfer is far greater than the temperature rise effect due to friction on the plate surface while the temperature rise is embodied in the center due to plastic deformation. Besides, the effect of strain rate on flow stress plays a leading role at the entrance and exit stage, and the flow stress on the plate surface in the deformation region is mainly determined by strain and temperature except the stick zone which is controlled by strain rate, however, the center flow stress in deformation is mainly affected by temperature.

Key words: rolling rheological behavior composites finite element

Fund: Supported by National Basic Research Program of China (No.2012CB619600)

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	Li ZHOU
	Changzhou WANG
	Xingxing ZHANG
	Bolü XIAO
	Zongyi MA

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https://www.ams.org.cn/EN/10.11900/0412.1961.2015.00210 OR https://www.ams.org.cn/EN/Y2015/V51/I7/889

Fig.1 Finite element model for hot rolling

Fig.2 Initial microstructure of SiCp/2009Al composites

Table 1 Thermo-physical properties of SiCp/2009Al composites^[22,23]

Fig.3 Changes of rolling force with time under different mesh sizes d

Fig.4 Changes of rolling force with mesh size

Fig.5 Path selected in the strip

Fig.6 Effect of mass scaling factor w on equivalent stress

Fig.7 Absolute maximum pricinpal stress distributions during rolling for SiCp/2009Al

(a) initial contact stage

(b) steady stage

Fig.8 Temperature field distribution (a) and changes of surface and center temperatures with time (b)

Fig.9 Strain field distribution (a) and changes of surface and center equivalent strains with time (b)

Fig.10 Velocity field distribution

Fig.11 Changes of equivalent strain rate with time

Fig.12 Equivalent stress field distribution (a) and changes of surface and center equivalent stresses with time (A—strain rate of being dominant, B—temperature drop of being dominant, C—temperature rise of being dominant, D—interaction effect) (b)

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