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在Al-10Ni合金熔体凝固过程中施加不同电压的交变磁场处理,研究了交流电压、模具温度和浇注温度对Al-10Ni合金凝固组织和力学性能的影响。结果表明:在0～250 V范围内,随着交变电压的升高,合金中的Al_3Ni相先细化后粗化,电压为150 V时,Al_3Ni相最为细小;Al_3Ni相随着模具温度的升高逐渐粗化,随着浇注温度的升高逐渐细化。经交变磁场处理后,基体α-Al和Al_3Ni相出现新的结晶取向,抑制了α-Al和Al_3Ni相原来的结晶取向;合金的抗拉强度和硬度都有所提高。
The effects of AC voltage, mold temperature and casting temperature on the microstructure and mechanical properties of Al-10Ni alloy were investigated by applying alternating magnetic field with different voltage during Al-10Ni melt solidification. The results show that the Al_3Ni phase in the alloy is refined and roughened with the increase of AC at 0 ~ 250 V, and the phase of Al_3Ni is the smallest with the voltage of 150 V. The Al_3Ni phase follows the mold temperature Increasing gradually roughened, with the pouring temperature gradually refined. After the alternating magnetic field treatment, the new crystal orientations of α-Al and Al_3Ni phases appeared in the matrix, which restrained the original crystal orientation of α-Al and Al_3Ni phases. The tensile strength and hardness of the alloys increased.