Table 2.

Influence of the deformation conditions selected for the second programming of PEU on the deformation stress σ_m,low and on the amount of fixed strain ε_u,low. The deformation temperature T_d,low and the maximum strain at low temperature elongation ε_m,low were varied. The first programming step consisted of an elongation to 400% at 40 °C, unloading and cooling to the second deformation temperature T_d,low. Errors were estimated from repeated measurements.

	Td,low = 0 °C		Td,low = 10 °C		Td,low = 20 °C
εm,low (%)	σm,low (MPa)	εu,low (%)	σm,low (MPa)	εu,low (%)	σm,low (MPa)	εu,low (%)
225	5.8 ± 0.2	198 ± 5	4.7 ± 0.2	187 ± 5	3.4 ± 0.2	186 ± 5
275	9.3 ± 0.2	215 ± 5	6.8 ± 0.2	212 ± 5	5.4 ± 0.2	202 ± 5
325	11.8 ± 0.2	245 ± 5	9.3 ± 0.2	235 ± 5	7.6 ± 0.2	221 ± 5
375	15.9 ± 0.2	269 ± 5	12.4 ± 0.2	256 ± 5	10.1 ± 0.2	241 ± 5