Recent Studies of Hydrogen Embrittlement in Structural Materials

Mechanical properties of metals and their alloys are most often determined by interstitial atoms. Hydrogen, as one common interstitial element, is often found to degrade the fracture behavior and lead to premature or catastrophic failure in a wide range of materials, known as hydrogen embrittlement. This topic has been studied for more than a century, yet the basic mechanisms of such degradation remain in dispute for many metallic systems. This work attempts to link, experimentally and theoretically, between failure, caused by the presence of hydrogen, and second phases, lattice distortion, and deformation levels.