Evolution of eutectic structures in Al-Zn-Mg-Cu alloys during heat treatment
The evolution of the eutectic structures in the alloys with different copper contents during heat treatment was studied by scanning electron microscopy（SEM）, energy dispersive X-ray spectroscopy（EDS）, and differential scanning calorimetry（DSC）. The as cast rnicrostmctures involve a（Al）, eutectic（a（A...
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| Veröffentlicht in: | Transactions of Nonferrous Metals Society of China 2006-06, Vol.16 (3), p.577-581 |
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| Format: | Artikel |
| Sprache: | eng |
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| Online-Zugang: | Volltext |
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| Zusammenfassung: | The evolution of the eutectic structures in the alloys with different copper contents during heat treatment was studied by scanning electron microscopy（SEM）, energy dispersive X-ray spectroscopy（EDS）, and differential scanning calorimetry（DSC）. The as cast rnicrostmctures involve a（Al）, eutectic（a（Al） ＋ Mg（Al, Cu, Zn）2） and Al7Cu2Fe. The Al2CuMg particles form during heat treatment. The volume of coarse phases decreases quickly in the initial 12 h during heat treatment. The volume of coarse phases change a little at 400 and 420 ℃. Copper content has a great influence on the evolution of the eutectic. The coarse phases dissolve slowly in alloy with higher copper content. |
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| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(06)60101-5 |