超声铸造制备原位Al3Ti/2024Al复合材料的性能

Zengkui Chen,Nan Hu,Fei Han,Jin Qin,Zhiming Du,Gang Chen

Special Casting & Nonferrous Alloys（2016）

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Abstract

利用超声铸造法制备了原位Al3Ti颗粒增强的Al3Ti/2024Al复合材料,研究了Al3Ti含量对Al3Ti/2024Al复合材料微观组织、硬度、力学性能和耐磨性的影响.结果表明,随着Al3Ti含量增加,复合材料基体组织逐渐细化;但当Al3Ti含量超过12％时,复合材料致密度却显著降低;基体硬度和复合材料硬度都随Al3Ti含量增加而增大;Al3Ti含量为8％的2024Al复合材料的屈服强度和抗拉强度分别为357MPa和446MPa,相比铸态2024Al合金提升了38.5％和39.8％;复合材料的耐磨性随Al3Ti含量增加而逐渐提高.

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