Fig. 3 illustrates the total elongation of the material.
It was observed that the material had different behaviors in each direction. The material in the rolling
direction had almost no change up to 300 ·C.
However, the samples prepared in 45° direction
showed a linear decrease trend from RT to 300 ·C.
In the transverse direction, no change was observed
until 200 ·C. After 200 'C, a sharp decrease was determined.
Similar results were also determined by
Mori et al[7J. Their study showed that the elongation
increased after 400 'C and the tensile strength decreased
with increasing the temperatures which are
above 300 ·C. Fig, 2 verifies that the flow stress level
was decreased with increasing temperature up to 200 'C
and then it was increased with increasing temperature
up to 300 'C in all directions.