Metallurgical Engineering > GATE 2025 > Metal Forming
A cylindrical Al alloy billet of 300 mm diameter is hot extruded to produce a cylindrical rod of 75 mm diameter at a constant true strain rate ( ) of 10s-1. The flow stress (σ) of the alloy at the extrusion temperature is given by σ=10(ε̇)0.3 MPa.
Assume the alloy is perfectly plastic and there is no temperature rise during the extrusion process.
The ideal plastic work of deformation per unit volume is ______ ×106 J m-3 (rounded off to one decimal place).
Assume the alloy is perfectly plastic and there is no temperature rise during the extrusion process.
The ideal plastic work of deformation per unit volume is ______ ×106 J m-3 (rounded off to one decimal place).
Correct : 0.3
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