Strain rate sensitivity and Hall–Petch behavior of ultrafine-grained gold wires

Grain growth kinetics of bulk AZ31 magnesium alloy by hot pressing

“…In most cases, the relationship between the yield stress y and the grain size d can be expressed by the Hall-Petch expression y = 0 + k y d −1/2 , where 0 and k y are material constants. For magnesium and magnesium alloys, grain refining is very tempting for their high k y value [1,[9][10][11][12].…”

Experimental methods for the characterization of fatigue in microstructures

“…Espinosa [2] evaluated the effect of size on mechanical response of suspended thin gold membranes and described the effect of thickness on yield stress and failure of the membrane investigated fatigue behavior of gold micro-bridges at resonant frequency and pull-in actuation voltage, also monitoring structural stiffness and changes in electrical resistance. Important parameters for fatigue behavior of gold were investigated and discussed [3] as strain rate sensitivity, grains size, grain boundaries properties and temperature gradients. T FAILURE MODES lectro-mechanical coupling often represents a crucial issue for the system reliability, especially related to surface contact, corrosion, electromigration and wear.…”

Effect of Ppm Level Dopant on Ductility of Ultrafine Grained Gold Wires

“…4. Ca was observed to have strong impact on creep [18] and Hall-Petch coefficient [26]. These obvious impacts on GB-related properties have suggested the segregation tendency of Ca in Au wires.…”