一百多年前,光学金相显微镜的出现,开拓了研究金属显微组织的崭新领域,使人们得以以直接观察金相组织的方式了解到金属材料的宏观性能与其内部组织结构的关系。此后,光学金相技术日趋完善,并已成为金属材料研究和生产检验中不可缺少的重要手段。但随着材料科学的不断发展,对金 Over a hundred years ago, the advent of optical microscopy opened up a whole new field in the study of the microstructure of metals, allowing people to understand the relationship between the macroscopic properties of metallic materials and their internal structure by directly observing the microstructure. Since then, the optical metallographic technology is maturing and has become an indispensable and important tool in the research and production testing of metallic materials. But with the continuous development of materials science, the gold