High-nitrogen nickel-free austenitic stainless steel intergranular-corrosion-prevention processing technology

Abstract

The invention relates to a high-nitrogen nickel-free austenitic stainless steel intergranular-corrosion-prevention processing technology. Solution treatment is firstly carried out on materials; and then cold rolling deformation and recrystallization annealing technological treatment is carried to enable the proportion of the special grain boundary in high-nitrogen nickel-free austenitic stainless steel to be improved, and therefore the aim of improving the decay resistance of the materials is accordingly achieved. The high-nitrogen nickel-free austenitic stainless steel intergranular-corrosion-prevention performance can be obviously improved through technological treatment.

Description

technical field [0001] The invention belongs to the field of performance optimization of stainless steel, in particular to a treatment process for improving the anti-intergranular corrosion ability of high-nitrogen nickel-free austenitic stainless steel. Background technique [0002] In recent years, the contradiction between the ever-increasing demand for stainless steel and the limited nickel resources has become increasingly serious, resulting in the continuous rise in the price of nickel-containing stainless steel, especially the price of nickel-containing austenitic stainless steel. In addition, human organs are sensitive to nickel-containing stainless steel Bioengineering materials are allergic (Ni>0.2%), and the incidence of human skin allergies caused by this is constantly increasing. Therefore, people have focused their attention on resource-saving stainless steel - high nitrogen nickel-free austenitic stainless steel. The introduction of a sufficient amount of ...

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Problems solved by technology

However, the research on improving the intergranular corrosion performance of high-nitrogen nickel-free austenitic stainless steel with GBE has not been reported yet.

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