金相技术是材料科学中研究金属材料组织(结构)的实验技术的总称。近十多年来,随着生产和科学技术的飞速发展,出现了一些研究金属内部组织的新方法和新手段,如透射电子显微镜术、超高压(百万伏以上)透射电子显微镜术、扫描电子显微镜术、 Metallographic technology is a general term for experimental techniques used to study the organization (structure) of metallic materials in materials science. In recent ten years, with the rapid development of production and science and technology, there have been some new methods and new methods for studying the internal organization of metals, such as transmission electron microscopy, ultrahigh pressure (million-volt or more) transmission electron microscopy, scanning Electron microscopy,