One new method for preparing nanocrystalline metal

In this work, we explore the new method for synthesizing the nanocrystalline metals. Without resorting to the initial nano-metallic powders, for the metals with anomalous melting line, we first put forward a totally new one-step method to prepare the nanocrystalline metal by means of dynamic decompression technique. The experimental results indicate that the nanocrystalline metal may be prepared successfully and the grains mainly range from 30 to 50 nm. This proposed one-step method may pave a new way for the synthesis of nanocrystalline metal and alloys with anomalous melting line.