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为获得制备铝基复合材料所需的亚微米级Al3Zr金属间化合物,采用高能行星球磨设备制备了Al-Zr复合粉末,并采用X射线衍射仪和扫描电镜等技术研究了球磨工艺参数(球磨时间、球料比和转速)对复合粉末微观组织的影响。结果表明:随高能行星球磨能量的增加(球磨时间、球料比和球磨速度),Al-Zr复合粉末的衍射峰逐渐宽化,峰强度减弱,晶粒细化甚至出现非晶组织。经转速320r/min,球料比30:1,球磨50h后Al-Zr复合粉末中仍未发现有金属间化合物生成,即Al、Zr仍以单质和固溶体形式存在,故欲制备亚微米级甚至纳米级的Al3Zr相仍需在后续处理中对其进行热处理。
In order to obtain the submicron Al3Zr intermetallics needed for the preparation of aluminum matrix composites, Al-Zr composite powders were prepared by high-energy planetary ball milling equipment. The effects of milling process parameters (ball milling time , Ball material ratio and speed) on the microstructure of the composite powder. The results show that the diffraction peaks of Al-Zr composite powders are broadened, the peak intensities are weakened, and the grain refinement is even with the appearance of amorphous structure with the increase of high-energy planetary ball milling energy (ball milling time, ball ratio and ball milling speed). After the speed of 320r / min, the ball material ratio of 30: 1, 50h after ball milling, no intermetallic compounds have been found in the Al-Zr composite powder. That is, Al and Zr are still in the form of elemental and solid solution. The nanoscale Al3Zr phase still needs to be heat-treated in subsequent processing.