退火态T12钢金相试样免抛光快速显示组织的试验研究  

Experimental on the Fast Display of Microstructure of Annealed T12 Steel Metallographic Sample without Polishing

作　　者：覃红[1] 李占坚[1] QIN Hong;LI Zhanjian(Guangxi Technical College of Machinery and Electricity,Nanning 530007,China)

机构地区：[1]广西机电职业技术学院,广西南宁530007

出　　处：《铸造技术》2019年第2期173-175,178,共4页Foundry Technology

摘　　要：介绍了退火态T12钢金相试样免抛光腐蚀显示组织的方法。针对退火态T12钢特点,通过改进化学腐蚀剂配方,加大硝酸的用量比例,并配用双氧水与酒精进行清洗,经过免抛光的化学腐蚀显示,结果表明,此方法可以获得良好的金相组织观察表面,免除制样的抛光步骤,缩短了金相制样时间,与常规方法相比,具有快速、高效的优点,极大地提高了T12钢金相检验的效率。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.

关 键 词：T12钢 金相制样 磨光 免抛光 腐蚀显示 快速高效 

分 类 号：TG115.21[金属学及工艺—物理冶金]