Method for making super-low carbon steel gold-phase sample and displaying its tissue

The invention relates to a method of preparing dead mild steel ultra-low-carbon steel golden phase sample and indicating structure, it belongs to preparation technology field of golden phase sample. The invention includes the following steps: thick grinding, thin grinding-polishing, eroding, arranging corrosion fluid. Its advantages are that: solves the difficult display problems of dead mild steel ultra-low-carbon steel austenite grain, obtains the clear photograph of austenite grain, The implementation of this invention is simple, it can easily prepare dead mild steel ultra-low-carbon steel golden phase sample.