The role of hydrogen-exposure temperature on the mechanical properties of hydrogen-cycled palladium

A Comparative Assessment of Hydrogen Embrittlement: Palladium and Palladium-Silver (25 Weight% Silver) Subjected to Hydrogen Absorption/Desorption Cycling

“…a muting of the degree of embrittlement). This behavior is seen in plots of Figures 2-4 for temperatures from ~475 K to the (α + β) critical temperature of ~570 K. The displayed behavior of the mechanical properties of the Pd-H system outside this temperature range has been explained elsewhere [22].…”

Nanoindentation of palladium–hydrogen

“…Changes were also reported in the hardness, with increases apparently resulting from both a / b and b / a transformations. Recent work has furthered this [6] and studied the mechanical effects of the cycling temperature [7,8]. The report of reduced stiffness was confirmed by a more recent study [9] based on using micro-cantilevers to measure resonance frequencies under a controllable hydrogen atmosphere.…”

Temperature controlled tensile testing of individual nanowires

“…In particular, the fracture strength of the specimen was measured to be 6.3 GPa, over 50 times higher than bulk coarse-grained Pd. 74,75 Assuming a 110 orientation, this ultimate tensile stress corresponds to a resolved shear stress on the {111} 112 slip system of 3.0 GPa, which is approximately μ/14, where μ is the shear modulus of Pd. This result shows a pronounced dependence of strength on temperature.…”