Research Article
Experimental Investigation of the Phase Equilibria in the Al-Mn-Zn System at 400°C
Table 2
The actual compositions of the key samples and the detected phases.
|
Sample number |
Actual composition identified by ICP (at%) | Phase identification |
Composition of identified phases by EPMA (at%) |
Al |
Mn |
Zn | By EPMA | By XRD | Al | Mn | Zn |
| 1 | 44 | 16 | 40 | Al4Mn | Al4Mn | 74 | 20 | 6 | | | 64 | 15 | 21 | Al-fcc | Al-fcc | 55 | 0 | 45 |
| 2 | 75 | 13 | 12 | | | 73 | 15 | 12 | Al4Mn | Al4Mn | 74 | 20 | 6 | Al-fcc | Al-fcc | 78 | 0 | 22 |
| 3 | 78 | 15 | 7 | | | 75 | 14 | 11 | Al4Mn | Al4Mn | 75 | 20 | 5 | Al-fcc | Al-fcc | 88 | 0 | 12 |
| 4 | 79 | 10 | 11 | | | 72 | 16 | 12 | Al4Mn | Al4Mn | 76 | 20 | 4 | Al-fcc | Al-fcc | 79 | 0 | 21 |
| 5 | 74 | 16 | 10 | | | 73 | 15 | 12 | Al4Mn | Al4Mn | 74 | 20 | 6 | Al-fcc | Al-fcc | 75 | 0 | 25 |
| 6 | 74 | 15 | 11 | | | 72 | 15 | 13 | Al4Mn | Al4Mn | 74 | 20 | 6 | Al-fcc | Al-fcc | 80 | 0 | 20 |
| 7 | 84 | 12 | 4 | Al6Mn | Al6Mn | 86 | 14 | 0 | Al4Mn | Al4Mn | 75 | 20 | 5 | Al-fcc | Al-fcc | 95 | 0 | 5 |
| 8 | 82 | 11 | 7 | Al12Mn | | 92 | 8 | 0 | Al6Mn | | 83 | 15 | 2 | Al-fcc | | 96 | 0 | 4 |
| 9 | 21 | 14 | 65 | | | 12 | 11 | 77 | Al11Mn4 | Al11Mn4 | 70 | 26 | 3 | Al8Mn5 | Al8Mn5 | 56 | 37 | 7 |
| 10 | 16 | 14 | 70 | | | 12 | 11 | 77 | | | 23 | 16 | 61 | Al11Mn4 | Al11Mn4 | 71 | 25 | 4 |
| 11 | 23 | 16 | 61 | | | 13 | 13 | 74 | | | 25 | 18 | 57 | Al11Mn4 | Al11Mn4 | 69 | 27 | 4 | Al8Mn5 | Al8Mn5 | 55 | 36 | 9 |
| 12 | 17 | 15 | 68 | Al11Mn4 | Al11Mn4 | 70 | 26 | 4 | | | 13 | 11 | 76 | | | 23 | 16 | 61 |
| 13 | 18 | 22 | 60 | | | 10 | 15 | 75 | Al8Mn5 | Al8Mn5 | 52–57 | 33–37 | 10–11 |
| 14 | 64 | 31 | 5 | Al11Mn4 | Al11Mn4 | 70 | 26 | 4 | Al8Mn5 | Al8Mn5 | 55 | 34 | 10 |
| 15 |
56 |
37 |
7 | Al8Mn5 | Al8Mn5 | 57 | 39 | 4 |
| 16 | 55 | 35 | 10 | Al11Mn4 | Al11Mn4 | 70 | 27 | 3 | Al8Mn5 | Al8Mn5 | 57 | 34 | 9 |
| 17 | 30 | 35 | 35 | Al8Mn5 | | 54 | 38 | 8 | | | 74 | 22 | 4 |
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