Abstract
Hydrogen fuel is a zero-emission fuel which uses combustion in internal engines to power vehicles and electrical devises. In electrolysis, electricity is run through water to separate the hydrogen and oxygen atoms. This method can be used by using wind, solar, geothermal, and many other resources. Hydrogen is an energy carrier. Hydrogen embitterment is the process by which various metals, most importantly high-strength steel, become brittle and fracture following exposure to hydrogen. The mechanism starts with lone hydrogen atoms diffusing through the metal. A hydrogen vehicle uses aluminum alloys, which shows high hydrogen embitterment characteristics. This paper makes an experiment of HEAC (Hydrogen Environment Assisted Cracking) characteristics using aluminum alloy. The aluminum alloys is 7075-T6. The fracture surface on repeated load and static load by DNG and hydrogen embitterment environment shows the facilitating mechanism. The surface features indicated that the hydrogen accelerated granular surface fracture.
