T4 and T6 Treatment of 6061 Al-15 Vol. % SiC_P Composite

Table 3

The Brinell hardness values of T6-treated 6061 Al-SiC composite.

Time of aging (hours)	Brinell hardness (In MPa) of the composite aged at
	140°C	160°C	180°C	200°C	220°C	240°C
0	893.7	893.7	893.7	893.7	893.7	893.7
0.5	1097.6	1166.2	1244.6	1234.8	1205.4	1195.6
1	1156.4	1225	1313.2	1332.8	1283.8	1254.4
2	1195.6	1293.6	1401.4	1372	1362.2*	1274*
3	1215.2	1313.2	1430.8	1401.4*	1332.8	1254.4
4	1244.6	1323	1450.4*	1342.6	1313.2	1244.6
5	1264.2	1352.4*	1401.4	1323	1283.8	1215.2
6	1274*	1313.2	1352.4	1264.2	1234.8	1195.6
8	1254.4	1225	1303.4	1205.4	1205.4	1185.8
10	1234.8	1185.8	1244.6	1185.8	1185.8	1176
20	1117.2	1136.8	1146.6	1127	1136.8	1127

*Peak hardness.