A kind of cr, n-type high manganese austenitic steel plate and preparation method thereof

Abstract

The invention discloses a Cr / N-containing high-manganese austenitic steel plate and a preparation method thereof. The Cr / N-containing high-manganese austenitic steel plate comprises the following chemical components in percentage by weight: 0.28-0.32% of C, 24.8-25.2% of Mn, 2.8-3.2% of Cr, 2.8-3.2% of Al, 0.02-0.20% of N, at most 0.015% of P, at most 0.005% of S and the balance of Fe. The preparation method comprises the following steps: smelting molten steel according to set components, casting into an ingot, heating to 1200 DEG C, keeping the temperature for 2 hours, forging into a plate blank, carrying out hot rolling until the thickness is 6mm, carrying out homogenizing treatment, carrying out cold rolling to the thickness of 1mm or so, and finally, carrying out solution treatment, thereby obtaining favorable strength-plasticity compatibility and having certain oxidation resistance and corrosion resistance.

Description

technical field

[0001] The invention belongs to the field of metallurgical materials, and in particular relates to a high manganese austenitic steel plate, specifically, a high manganese austenitic steel plate containing Cr and N elements, low cost and with certain corrosion resistance and a preparation method thereof. Background technique

[0002] Stainless steel is an indispensable traditional metal material with great consumption, and is widely used in various fields of national economic construction and people's life. In order to obtain good corrosion resistance and oxidation resistance, Ni and Cr are often used as alloying elements in stainless steel, and their content is very high. However, as far as the world is concerned, Ni and Cr are strategic metal elements that are resource-scarce and expensive; especially, my country is one of the countries that are poor in nickel and chromium, and the reserves of nickel and chromium are very small, and the raw materials mainly ...

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