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急冷方法制备的金属或合金粉末,可用来制备高强度、韧性和抗腐性的非晶微晶材料。对于一些互相不固溶的合金材料,采用急冷工艺可以使合金元素第二相粒子在基体中分布均匀。由于急冷是一个不稳定的热力学过程,材料的组织结构及稳定性对急冷过程的变化十分敏感。本工作对急冷Al-Pb-Si合金粉末的微观组织结构及稳定性进行了观察和研究,探索出了μm级微粉粒子的电
Rapid cooling method for the preparation of metal or alloy powder, can be used to prepare high strength, toughness and corrosion resistance of amorphous microcrystalline materials. For some non-solution alloy materials, the use of quenching process can make alloying elements of the second phase particles in the matrix distribution. Because quenching is an unstable thermodynamic process, the microstructure and stability of the material are sensitive to changes in the quench process. In this work, the microstructure and the stability of quenched Al-Pb-Si alloy powders were observed and studied.