Plasticity Improvement of Ball-Spun Magnesium Alloy Tube Based on Stress Triaxiality

Table 3

Process parameters.

Process parameters	Different ball diameters R (mm)
Δt (mm)	0.2	0.2	0.3
f/mm/r	0.2	0.3	0.2
R (mm)	2.5, 3.0, 3.5, 4.0, 4.5
Process parameters	Different amounts of thinning Δt (mm)
f/mm/r	0.2	0.3	0.2
R (mm)	3	3	4.5
Δt (mm)	0.1, 0.2, 0.3, 0.4, 0.5
Process parameters	Different feed ratios f (mm)
R (mm)	2.5	2.5	3
Δt (mm)	0.2	0.3	0.2
f/mm/r	0.1, 0.15, 0.2, 0.25, 0.3