ABSTRACT
Hydrogen damage refers to the degradation of physical and mechanical properties of metals resulting from the action of hydrogen, which may be initially present inside the metal or accumulated through absorption. Most often the damage is associated with residual or applied tensile stress. The damage may manifest itself in several ways:
mechanical fracture, and 4. Macroscopic damage, such as internal flaking, blistering, fissuring, and
cracking
The term hydrogen embrittlement has long been in use to describe some of these forms, but the generic term hydrogen damage should be preferred as many of the damages do not conform to the classical features of embrittlement, namely, the reduced load bearing capacity or fracture below the yield strength.
