有关资料推荐了一些显示高速钢奥氏体晶界和马氏体形态的侵蚀剂和侵蚀方法,但对于经低温淬火、回火后的晶界显示,效果还不甚理想. 经反复试验,我们研制出几种显示高速钢奥氏体晶界和马氏体形态的腐蚀剂. 奥氏体晶界的显示 1侵蚀剂配方试剂的配方列于表1. 2试剂的配制和腐蚀方法Ⅰ号试剂将饱和苦味酸水溶液置于容器中,然后边加入盐 Relevant data have recommended some etchants and erosions that show the austenite grain boundaries and martensite morphology of HSS, but the results are not very satisfactory for the grain boundaries after tempering at low temperature and tempering. After repeated tests, we Developed several high-speed steel austenite grain boundaries and martensite morphology of etchants. Austenite grain boundaries show 1 etchant formulation recipe formulations are listed in Table 1. 2 reagent preparation and corrosion method No. I reagent Saturated picric acid aqueous solution is placed in the container, and then salt is added