Preparation and microstructure of Al-Ni-Y powder by rapid solidification^①

来源期刊：中南大学学报(英文版)2004年第1期

论文作者：黄劲松 刘咏 陈仕奇 刘祖铭

文章页码：1 - 5

Key words：rapid solidification; amorphous; powder

Abstract: The Al-Ni-Y alloy powder was prepared by rapid solidification technology of inert gas atomization. The diam-eter of amorphous powder is less than 12μm. The effects of atomization gas on cooling velocity, morphology, microstruc-ture and microhardness of powder and fine powder ratio were investigated.The results show that the morphology, mi-crostructure and microhardness of powder and fine powder ratio are affected by cooling velocity changed through atomiza-tion gas. The cooling velocity of inert gas atomization is more than 1×104K/s. The larger the cooling velocity, the finerthe powder, and the smoother the surface of powder; the smaller the diameter of powder, the larger the microhardness ofpowder.