Study on Stress Corrosion Properties of 1Cr17Ni2 Stainless Steel

Abstract

1Cr17Ni2 stainless steel is used in aviation, ships, machinery, and other fields. However, stress corrosion will lead to its strength reduction, thus failure. In this paper, we studied the stress corrosion resistance of 1Cr17Ni2 stainless steel bolts and nuts using fasteners’ stress corrosion test method and fasteners’ stress corrosion test method in a simulated environment with the accelerated stress corrosion test method of fasteners. The influence of seawater concentration, temperature, stress, test duration, and other parameters was fully considered during the test. The test results showed that 1Cr17Ni2 stainless steel would appear to stress corrosion crack under a specific corrosive environment, but the occurrence probability was not high. Therefore, in the complex seawater salt fog environment, the stress corrosion of 1Cr17Ni2 stainless steel cannot be ignored, which provides a practical reference for applying 1Cr17Ni2 stainless steel in a complex environment.

Laser Shock Peening Improves the Corrosion Resistance of an E690 High-Strength Steel Cladding Layer

“…Metal corrosion tests can help protect sea industry platforms from failure [ 16 ]. Common corrosion test methods include exposure testing, mass loss testing, laboratory-accelerated testing, and electrochemical testing (which is especially useful) [ 17 , 18 , 19 , 20 ]. In this study, by using electrochemical methods, the corrosion resistance between the matrix, cladding repair layer, and cladding repair layer of E690 high-strength steel after laser shock peening was compared and studied.…”