Manufacturing of Nanostructured Rings from Previously ECAE-Processed AA5083 Alloy by Isothermal Forging

Table 3

Microhardness for the AA5083 samples prior to isothermal forging, where N0 represents the AA5083 initial material, N2 the ECAE processed AA5083 and N2 TT 340°C the ECAE processed AA5083 with the subsequent heat treatment at 340°C.

	N0	N2	N2 TT 340°C
	87.3	123.7	106.2
	83.2	140.6	98.2
	86.3	142.4	112.7
	76.0	154.8	103.0
	87.4	140.4	103.7
Mean	84.04	140.38	104.76
Standard deviation	4.81	11.07	5.30