Using a combination of high-resolution scanning and transmission electron microscopy, the basic mechanisms of hydrogen-induced intergranular fracture in nickel have been revisited. Focused-ion beam machining was employed to extract samples from the fracture surface to enable the examination of the microstructure immediately beneath it. Evidence for slip on multiple slip systems was evident on t...

Hydrogen embrittlement is increasingly important in advanced high strength steels (AHHS) as levels increase well above 1000 MPa. This work developed a detailed understanding of the embrittling mechanism model AHHS based on Fe-Ti-Mo and Fe-V-Mo, both strengthened through interphase precipitation. charging led to an dislocation density enlarged strain field around precipitates, resulting residual...

Hydrogen barrier coatings are protective layers consisting of materials with a low intrinsic hydrogen diffusivity and solubility, showing the potential to delay, reduce or hinder permeation. expected enable steels, which susceptible embrittlement, specifically cost-effective alloy-steels light-weight high-strength for applications in economy. Predominantly, ceramic coating have been investigate...