Table 1.
Volume fraction (Xc-t’) of cubic-derived c and t’-phase, mean biaxial flexural strength (BFS), characteristic strength (σ0) and Weibull modulus (m) for the various treatment groups. Calculated maximum allowable stress (MAS) for a fixed probability of survival Ps of 0.999, safety factor and Ps associated with a fixed MAS of 700 MPa for each treatment group.
| Group |
Xc-t’ (SD) (%) |
BFS (SD) (MPa) |
σ0 (SD) (MPa) |
Weibull modulus m (SD) |
MAS (MPa) |
Safety factor | Ps |
|---|---|---|---|---|---|---|---|
| Ps=0.999 | (MAS=700 MPa) | ||||||
| AS1350 | 10.8 (1.4)a | 1000 (146)a | 1061 (6) | 8.1 (0.5)a | 452 | 1.429 | 0.9658 |
| AA1350 | 1553 (201)e | 1656 (5) | 9.1 (0.3)g | 767 | 2.219 | 0.9996 | |
| AAHT1350 | 1156 (87)bc | 1210 (7) | 15.4 (1.7)c | 762 | 1.651 | 0.9997 | |
| AS1450 | 17.3 (1.3)b | 1036 (114)a | 1101 (4) | 13.3 (0.5)a | 552 | 1.480 | 0.9885 |
| AA1450 | 1502 (102)de | 1566 (3) | 17.6 (0.7)f | 1047 | 2.146 | 1.0000 | |
| AAHT1450 | 1202 (69)bc | 1249 (3) | 20.9 (1.3)c | 887 | 1.717 | 1.0000 | |
| AS1550 | 20.8 (1.5)c | 1147 (89)bc | 1204 (7) | 15.0 (1.4)c | 751 | 1.639 | 0.9996 |
| AA1550 | 1391 (108)d | 1458 (3) | 15.2 (0.6)e | 916 | 1.987 | 1.0000 | |
| AAHT1550 | 1102 (66)ab | 1147 (2) | 19.8 (0.9)b | 799 | 1.574 | 0.9999 | |
| AS1600 | 25.2 (1.7)c | 1015 (143)a | 1099 (14) | 7.0 (0.8)a | 404 | 1.450 | 0.9542 |
| AA1600 | 1258 (115)c | 1327 (6) | 12.8 (0.9)d | 764 | 1.797 | 0.9997 | |
| AAHT1600 | 1020 (103)a | 1074 (6) | 11.6 (1.0)a | 589 | 1.457 | 0.9925 | |
Identical letters denote no statistically significant difference after adjustment for multiple comparisons