Low temperature deformation for the formation of fine grained non-equilibrium materials

本文介绍了用机械变形法在几种合金中形成纳米晶粒的实验结果。在常规铣削方法的基础上，采用反复加压变形的方法，使细晶组织的加工原理成为可能。Ag-70at%Cu试样经100次反复压制后形成过饱和固溶体。在Co-Cu样品中，观察到通过施加磁场降低电阻率，这是磁性和非磁性金属的纳米级复合材料的特征。

This paper deals with the experimental results of the formation of nano-meter sized crystals grains in several alloys by the method of mechanical deformation. Repeated press deformation method was employed in plase of the conventional milling method to make the processing principle of fine grained structure as possible. Repeated pressing of Ag-70at%Cu sample for 100 times produced a super saturated solid solution. Electrical resistivity reduction by the application of magnetic field, characterisitic for the nano-scaled composites of magnetic and non-magnetic metals, was observed in Co-Cu samples.