本文主要论述,应用透射电镜,对热处理M2高速钢经一系列氮离子注入工艺下的注层显微组织形态及合金相结构进行的一些研究。离子注入,是以数万以上电子伏能量的选定离子、以一定剂量和束流强度去轰击并注入材料表面,从而改变材料表面的各种理化及力学性能的一种新型材料表面改性处理技术。目前这种技术仍多侧重于一般注入工艺等方面的研究,而对注层显微组织形态与合金相结构及其注层强化的物理机制等理论方面的研究尚少。我们曾应用多种分析技术,系统的研究了这方面的问题。但因限于篇幅,这里只能列出其中一些主要研究结果。本文选择的具体注入工艺参数为离子能量50Kev,束流 This article mainly discusses the use of transmission electron microscopy, heat treatment of M2 high-speed steel through a series of nitrogen ion implantation under the injection microstructure and alloy phase structure of some of the study. Ion implantation is a new type of material surface modification technology that changes the physicochemical and mechanical properties of the material surface by bombarding and injecting ions into the material at selected doses and beam intensities with selected ions of tens of thousands of electron volts. . At present, this technique is still mostly focused on the research of general implantation technology. However, few theoretical researches have been done on the microstructure morphology and the phase structure of the alloy and the physical mechanism of its injection enhancement. We have applied a variety of analytical techniques to systematically study this issue. However, due to space limitations, only some of the major findings are listed here. In this paper, the specific injection process parameters selected for the ion energy 50Kev, beam