Experimental Study of Microstructure Changes of Hypoeutectic Al-Si Alloy in Electromagnetic Oscillation Condition
Taking hypoeutectic Al-Si alloy as an object,the effect of single electric field,single magnetic field,and electromagnetic oscillations on eutectic silicon morphology and size,and the influence of electromagnetic intensity and current density on the mechanical properties of the alloy were studied by experiments,and the deep mechanism of electromagnetic oscillation effect was explored.The results show that,under the action of single electric field or single magnetic field,the refimement of eutectic silicon is lower than under the action of electromagnetic oscillations.With the increase of electromagnetic oscillations in intensity,the eutectic silicon morphology transforms gradually from coarse flakiness into refined granular and fibrous.The increase of magnetic field strength and current density can effectively improve the Brinell hardness and tensile strength of hypoeutectic A1-Si alloy,the effect is better than a single electric field or a single magnetic field.
国家科技期刊平台
NSTL
万方数据
维普
