| Specimen |
Wax (%) |
Al grain size (µm) |
Pore size (µm) |
Pore shape |
Volume porosity (%) |
Surface porosity (%) |
Rockwell hardness (HRH) |
| Pure Al |
0 |
5.5 |
2.7 |
round |
2.9 |
1.9 |
80 |
| 1.5 |
5.5 |
14.3 |
round |
10.8 |
5.8 |
72 |
|
| 10.5 |
5.6 |
19.3 |
round and irregular |
23.8 |
12.7 |
61 |
|
| 14.5 |
5.5 |
27.0 |
irregular |
33.9 |
15.1 |
48 |
|
| Al 6061 |
0 |
45.6 |
12.0 |
round |
6.5 |
3.5 |
84 |
| 1.5 |
46.1 |
20.0 |
round |
13.8 |
10.3 |
67 |
|
| 10.5 |
45.3 |
28.0 |
round and irregular |
30.9 |
16.0 |
23 |
|
| 14.5 |
45.7 |
33.0 |
round and irregular |
41.7 |
20.7 |
8 |