采用粉末冶金法制备了钛合金颗粒增强镁基复合材料,经过不同挤压比的热挤压变形后,对其显微组织和力学性能进行了检测.结果表明:复合材料的基体晶粒明显小于未增强的镁合金;增强体分布均匀,与基体结合良好,且无界面反应发生;随挤压比的增大,基体晶粒更加细小,复合材料的组织均匀性亦得到提高;超大挤压变形使原镁粉表面的氧化膜得到有效的破碎和分散,从而具有一定的氧化物弥散强化(ODS)作用,进一步提高了复合材料的力学性能.
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