Question

what is elastic hysteresis according to stress - strain graph
​

Answer 1

Answer:

When mechanical test data is plotted on a stress/strain curve, a material exhibiting elastic hysteresis will display one path during the loading phase of the test, and a different path during the unloading phase. ... Different materials display varying degrees of elastic hysteresis.

Answer 2

Answer:

The stress-strain curves were obtained upon tensile loading and unloading tests at RT. ... the oxygen content increases, the stress hysteresis decreases, and the deformation mode changes to nonlinear elastic behavior.