公开(公告)号：US4818481A

公开(公告)日：1989-04-04

申请号：US23851

申请日：1987-03-09

申请人： Michael J. Luton ,  Raghavan Ayer ,  Ruzica Petkovic-Luton ,  Joseph Vallone ,  Stephen Matras

发明人： Michael J. Luton ,  Raghavan Ayer ,  Ruzica Petkovic-Luton ,  Joseph Vallone ,  Stephen Matras

IPC分类号： B22F3/20 ,  C22C32/00 ,  B22F1/00

CPC分类号： B22F3/20 ,  C22C32/0036

摘要： Disclosed is a method for extruding fine grain aluminum mechanically alloyed powder material such that the resulting extruded product is substantially free of texture, which method comprises extruding a billet of the powder material having a mean grain size less than about 5 microns through a die having an internal contour which conforms substantially to the formula: ##EQU1## where R is the radius of the die contour at any given point x along the major axis of the die orifice from its entry plane, R.sub.o is the radius of the billet, and K is an arbitrary constant.

摘要翻译： 公开了一种用于挤出细晶粒铝机械合金化粉末材料的方法，使得所得挤出产品基本上不含质地，该方法包括通过具有小于约5微米的模具挤出平均粒度小于约5微米的粉末材料坯料， 内部轮廓基本符合以下公式：其中R是沿着模孔从其入口平面的长轴在任何给定点x处的模具轮廓的半径，Ro是坯料的半径，K是 任意常数。