The discussion centers on the relationship between strain rate and yield stress, specifically questioning whether an increase in strain rate can ever lead to a decrease in yield stress. The literature reviewed indicates that while yield stress typically increases with strain rate, anomalies exist where yield stress increases with temperature. However, no definitive examples were found that demonstrate a decrease in yield stress with increasing strain rate, particularly in the context of "yield strength" and "negative strain rate sensitivity." Figures such as Fig. 7c illustrate these anomalies.
PREREQUISITESMaterial scientists, mechanical engineers, and researchers investigating the mechanical properties of materials under varying strain rates and temperatures.