Mo含量对Al-Mo合金组织及性能的影响

Influence of Mo Content on the Structure and Performance of Al-Mo Alloy

通过制备Mo含量为0.5%,、1.0%,、1.5%,、2.0%,的Al-Mo合金,利用激光共聚焦显微镜、布氏硬度计、摩擦磨损试验机研究Mo含量对合金铸态组织、硬度及耐磨性的影响。研究结果表明:Mo含量超过1.0%,时,合金中出现含Mo的沉淀析出Al_(12)Mo颗粒相,随着Mo含量的增加,析出的第二相颗粒数目增多,合金硬度呈现上升趋势,Mo含量为2.0%,时,合金的硬度值最高,同时Mo含量可有效改善Al-Mo合金的磨粒磨损性能。

In this paper,the Al-Mo alloys with Mo content of0.5%,,1%,,1.5%,and2.0%,were prepared.The effects of Mo content on the microstructure,hardness and wear resistance of as-cast alloy were investigated by means of laser scanning confocal microscope,Brinell hardness tester and friction and wear tester.The results show that the precipitation of Al12Mo particles in Mo precipitates with Mo content of more than1%,,and with the increase of Mo content,the number of second phase particles increases.The hardness of the alloy showed an upward trend,and the hardness of the alloy was the highest when the content of Mo was2%,,and the content of Mo could effectively improve the wear resistance of Al-Mo alloy.