Abstract:
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The research on microstructure pattern and mechanical properties of the circular ring parts by liquid forging experiment under different specific pressures and casting temperatures were stated.The results show that under differ- ent specific pressures,increasing the specific pressure,the length ofαarborescent crystal is reduced,the arborescent structure is broken and the mechanical properties of the parts rise thereupon.The results also indicate that there is much greater difference in the rnicrostructure pattern of the parts under different casting temperatures,and the phe- nomenon of the broken rough fir-tree crystal is more obvious as the casting temperature rising,the microstructure of the parts becomes compact and the mechanical properties of the parts rise gradually too.
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