Preventive Effect of Shot Peening on Stress Corrosion Cracking

Shot peening effects on corrosion behavior of Hydroxyapatite coated AISI

The effect of several Almen intensities of shot peening on the corrosion behavior, surface roughness, micro hardness profiles, and residual stresses of stainless steel AISI 316 L were investigated. Hydroxyapatite coating (HA) were applied to shot peened materials to improve their corrosion resistance. The corrosion behaviour were studied using potentiodynamic polarization. The electrochemical t...

Stress Corrosion Cracking

Corrosion Properties of 34CrMo4 Steel Modified by Shot Peening

A nanocrystalline layer was prepared on the surface of 34CrMo4 steel by time controlling shot peening (SP, i.e., 1, 5, 10, and 20 minutes). Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) analysis, and transmission electron microscope (TEM) were applied to analyze the surface, cross-sections, and grain size of the specimens before and after SP. The electrochemical c...

ARPA Coupling Program on Stress - Corrosion Cracking

A progress report of the ret arch invest carried out on the problem of stress-cor high strength materials under ARPA Order Work at Carnegie-Mellon University, Lehi Georgia Institute of Technology, The Boe American University, and the Naval Resea cerning test techniques, materials chara metallurgy, surface studies, and corrosi described. The report is divided into t covering work on high strengt...

Effect of Hydrogen on Corrosion and Stress Corrosion Cracking of AZ91 Alloy in Aqueous Solutions

The effect of hydrogen on the corrosion and stress corrosion cracking of the magnesium AZ91 alloy has been investigated in aqueous solutions. Hydrogen produced by corrosion in water diffuses into, and reacts with the Mg matrix to form hydride. Some of the hydrogen accumulates at hydride/Mg matrix (or secondary phase) interfaces as a consequence of slow hydride formation and the incompatibility ...