Corrosive agent for displaying TC4 metallographic structure and preparation method and use method

The invention belongs to the technical field of metallographic structure display of metal materials, and particularly discloses a corrosive agent for displaying a TC4 metallographic structure and a preparation method and a use method. The method mainly comprises the following steps of (1), preparing a metallographic structure corrosive agent; (2), slicing a TC4 plate; (3), pretreating the TC4 plate; and (4), under a microscope, carrying out metallographic structure observation on the TC4 plate by adopting a polarization and differential interference phase contrast mode. According to the method, the metallographic structure of the TC4 plate can be well obtained, and the problems that in the prior art, due to corrosion limitation and improper observation modes, the grain boundary of the metallographic structure of the TC4 plate is not clear, the two-phase structure cannot be distinguished, and the alpha grain size cannot be measured are solved. 本发明属于金属材料金相组织显示技术领域，具体公开了一种TC4金相组织显示用腐蚀剂及配制方法和使用方法。本发明主要包括以下步骤：1)配制