Question #$1$

Two specimens made of a same metal are tested under tension at $540C.$ The first one is tested at

$\frac{10}{s}($a relatively low strain rate$)$ while the second one is tested at $\frac{300}{s}($a relatively high strain

rate$).$ At lower strain rate and higher strain rate, the stresses are measured as $160$ MPa and

$310$ MPa respectively.

a$)$ Calculate strain rate sensitivity component and strength coefficient for this material.

b$)$ What would you expect to happen to values calculated in part $($a$)$ if the tests were performed

at $300C?$ Just explain.