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以纯铝粉、氟硼酸钾(KBF4)、氟锆酸钾(K2ZrF6)和氟铌酸钾(K2NbF7)为原料采用原位反应法制备铝基复合材料。通过正交实验设计方法,研究了原料的含量以及熔铸温度对铝基复合材料抗拉强度、伸长率的影响。结果表明:添加K2ZrF6、K2NbF7和KBF4均能提高铝基复合材料的力学性能;对铝基复合材料的抗拉强度的影响大小依次为K2ZrF6>K2NbF7>KBF4>温度;对铝基复合材料伸长率的影响大小依次为KBF4>K2NbF7>温度>K2ZrF6;在实验数据范围内考虑材料的综合力学性能,可得出较优组合。
The aluminum matrix composites were prepared by in situ reaction using pure aluminum powder, KBF4, K2ZrF6 and K2NbF7 as raw materials. Orthogonal experimental design method was used to study the effect of raw material content and casting temperature on tensile strength and elongation of aluminum matrix composites. The results show that the addition of K2ZrF6, K2NbF7 and KBF4 can improve the mechanical properties of aluminum matrix composites; the impact on the tensile strength of the aluminum matrix composites followed the order of K2ZrF6> K2NbF7> KBF4>; the elongation of aluminum matrix composites KBF4> K2NbF7> temperature> K2ZrF6 in the order of magnitude; considering the comprehensive mechanical properties of the material in the experimental data range, a better combination can be obtained.