Experimental on the Fast Display of Microstructure of Annealed T12 Steel Metallographic Sample without Polishing
Author of the article:QIN Hong;LI Zhanjian
Author's Workplace：Guangxi Technical College of Machinery and Electricity,Nanning 530007,China
Key Words：T12 steel Metallographic sample Polishing Polishingfree Corrosion display Fast and efficient
Abstract：
A method for revealing polishing-free microstructure of annealed T12 steel metallurgical sample is introduced.According to the characteristics of annealed T12 steel, by improving the formula of chemical etchant, increasing the amount of nitric acid, and using hydrogen peroxide and alcohol to clean, the chemical corrosion is shown without polishing. This method can obtain good metallographic structure, avoid polishing process, shorten the time of metallographic sample preparation. Compared with the conventional method, this method has the advantages of rapidity and efficiency, and greatly improves the efficiency of metallographic examination of T12 steel.
