When T was 553 K, a successful tube hydroformed
at the elevated temperature component, as designed,
could be obtained both by the FE simulation and the
experimental validation, as shown in Fig. 10d. The
sizes of the components without cracks were exactly
the same for the numerical simulation and the
experiment. This also demonstrates that 553 K is a
relatively proper THF temperature for obtaining a
tubular component successfully.
In summary, Fig. 10a–d show a comparison
between the experimental rupture and that predicted
using the M–K model. It can be seen that the FEM
result accords well with the experimental results,
which indicates that the proposed M–K model was
valid during the simulation of the magnesium-based
alloy for the THF process at elevated temperatures