Display method for second phase of austenite heat-resisting steel based on dyeing
A technology of austenitic heat-resistant steel and display method, which is applied in the field of metallographic analysis in steel, can solve the problems of easy confusion of grain boundaries, no good, difficult to distinguish, etc., and achieves low harm to inspectors and the environment, and reusability Strong, easy-to-implement effects
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[0020] The present invention will be further described in detail below with reference to the drawings and embodiments.
[0021] The present invention is a method for displaying the second phase of a stained austenitic heat-resistant steel, including the following steps:
[0022] 1) Dye preparation
[0023] Weigh (3~6)g each of sodium hydroxide and potassium permanganate, measure 100ml of water, add the weighed sodium hydroxide and potassium permanganate into 100ml of water, stir with a glass rod until it is completely dissolved, and prepare an alkali Coloring agent for aqueous potassium permanganate solution;
[0024] 2) Preparation of metallographic specimen of austenitic heat-resistant steel
[0025] The metallographic samples of austenitic heat-resistant steel are prepared by mechanical grinding and polishing. When the austenitic heat-resistant steel metallographic samples are prepared, No. 120, No. 240, No. 480, No. 600, No. 800 and 1000 are used in order. No. water sandpaper grin...
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