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实验研究了Al_2O_3粒子在a—黄铜中的喷射弥散行为和弥散粒子对合金室温和高温力学性能的作用。试验结果表明:减小喷射粒子原始直径和加入少量的Ti元素是提高Al_2O_3粒子在基体内弥散效果的有效途径;进一步的实验和观察表明:弥散分布的Al_2O_3粒子阻碍了合金形变时的位错运动,从而提高了合金的室温和高温力学性能。
The effects of dispersion and dispersion of Al 2 O 3 particles in a-brass on the mechanical properties at room and elevated temperatures of the alloy were investigated experimentally. The experimental results show that reducing the initial diameter of jet particles and adding a small amount of Ti is an effective way to improve the dispersion effect of Al 2 O 3 particles in the matrix. Further experiments and observations show that the dispersed Al 2 O 3 particles prevent dislocation movement during deformation , Thus improving the alloy’s room temperature and high temperature mechanical properties.