Differential Scanning Calorimetry and Thermodynamic Predictions—A Comparative Study of Al-Zn-Mg-Cu Alloys
Al-Zn-Mg-Cu alloys are widely used in aircraft applications because of their superior mechanical properties and strength/weight ratios. Commercial Al-Zn-Mg-Cu alloys have been intensively studied over the last few decades. However, well-considered thermodynamic calculations, via the CALPHAD approach...
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MDPI AG
2016-08-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/6/8/180 |
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| author | Gernot K.-H. Kolb Stefanie Scheiber Helmut Antrekowitsch Peter J. Uggowitzer Daniel Pöschmann Stefan Pogatscher |
| author_facet | Gernot K.-H. Kolb Stefanie Scheiber Helmut Antrekowitsch Peter J. Uggowitzer Daniel Pöschmann Stefan Pogatscher |
| author_sort | Gernot K.-H. Kolb |
| collection | DOAJ |
| description | Al-Zn-Mg-Cu alloys are widely used in aircraft applications because of their superior mechanical properties and strength/weight ratios. Commercial Al-Zn-Mg-Cu alloys have been intensively studied over the last few decades. However, well-considered thermodynamic calculations, via the CALPHAD approach, on a variation of alloying elements can guide the fine-tuning of known alloy systems and the development of optimized heat treatments. In this study, a comparison was made of the solidus temperatures of different Al-Zn-Mg-Cu alloys determined from thermodynamic predictions and differential scanning calorimetry (DSC) measurements. A variation of the main alloying elements Zn, Mg, and Cu generated 38 experimentally produced alloys. An experimental determination of the solidus temperature via DSC was carried out according to a user-defined method, because the broad melting interval present in Al-Zn-Mg-Cu alloys does not allow the use of the classical onset method for pure substances. The software algorithms implemented in FactSage®, Pandat™, and MatCalc with corresponding commercially available databases were deployed for thermodynamic predictions. Based on these investigations, the predictive power of the commercially available CALPHAD databases and software packages was critically reviewed. |
| first_indexed | 2024-12-14T15:14:26Z |
| format | Article |
| id | doaj.art-e4978b87e60d4795bc6bbb5325c28573 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-14T15:14:26Z |
| publishDate | 2016-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-e4978b87e60d4795bc6bbb5325c285732022-12-21T22:56:26ZengMDPI AGMetals2075-47012016-08-016818010.3390/met6080180met6080180Differential Scanning Calorimetry and Thermodynamic Predictions—A Comparative Study of Al-Zn-Mg-Cu AlloysGernot K.-H. Kolb0Stefanie Scheiber1Helmut Antrekowitsch2Peter J. Uggowitzer3Daniel Pöschmann4Stefan Pogatscher5Institute of Nonferrous Metallurgy, Montanuniversitaet Leoben, Franz-Josef-Str. 18, Leoben 8700, AustriaInstitute of Nonferrous Metallurgy, Montanuniversitaet Leoben, Franz-Josef-Str. 18, Leoben 8700, AustriaInstitute of Nonferrous Metallurgy, Montanuniversitaet Leoben, Franz-Josef-Str. 18, Leoben 8700, AustriaLaboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 4, Zürich 8093, SwitzerlandAMAG rolling GmbH, P.O. Box 32, Ranshofen 5282, AustriaInstitute of Nonferrous Metallurgy, Montanuniversitaet Leoben, Franz-Josef-Str. 18, Leoben 8700, AustriaAl-Zn-Mg-Cu alloys are widely used in aircraft applications because of their superior mechanical properties and strength/weight ratios. Commercial Al-Zn-Mg-Cu alloys have been intensively studied over the last few decades. However, well-considered thermodynamic calculations, via the CALPHAD approach, on a variation of alloying elements can guide the fine-tuning of known alloy systems and the development of optimized heat treatments. In this study, a comparison was made of the solidus temperatures of different Al-Zn-Mg-Cu alloys determined from thermodynamic predictions and differential scanning calorimetry (DSC) measurements. A variation of the main alloying elements Zn, Mg, and Cu generated 38 experimentally produced alloys. An experimental determination of the solidus temperature via DSC was carried out according to a user-defined method, because the broad melting interval present in Al-Zn-Mg-Cu alloys does not allow the use of the classical onset method for pure substances. The software algorithms implemented in FactSage®, Pandat™, and MatCalc with corresponding commercially available databases were deployed for thermodynamic predictions. Based on these investigations, the predictive power of the commercially available CALPHAD databases and software packages was critically reviewed.http://www.mdpi.com/2075-4701/6/8/180aluminium alloysAl-Zn-Mg-Cu alloysCALPHADdifferential scanning calorimetry |
| spellingShingle | Gernot K.-H. Kolb Stefanie Scheiber Helmut Antrekowitsch Peter J. Uggowitzer Daniel Pöschmann Stefan Pogatscher Differential Scanning Calorimetry and Thermodynamic Predictions—A Comparative Study of Al-Zn-Mg-Cu Alloys Metals aluminium alloys Al-Zn-Mg-Cu alloys CALPHAD differential scanning calorimetry |
| title | Differential Scanning Calorimetry and Thermodynamic Predictions—A Comparative Study of Al-Zn-Mg-Cu Alloys |
| title_full | Differential Scanning Calorimetry and Thermodynamic Predictions—A Comparative Study of Al-Zn-Mg-Cu Alloys |
| title_fullStr | Differential Scanning Calorimetry and Thermodynamic Predictions—A Comparative Study of Al-Zn-Mg-Cu Alloys |
| title_full_unstemmed | Differential Scanning Calorimetry and Thermodynamic Predictions—A Comparative Study of Al-Zn-Mg-Cu Alloys |
| title_short | Differential Scanning Calorimetry and Thermodynamic Predictions—A Comparative Study of Al-Zn-Mg-Cu Alloys |
| title_sort | differential scanning calorimetry and thermodynamic predictions a comparative study of al zn mg cu alloys |
| topic | aluminium alloys Al-Zn-Mg-Cu alloys CALPHAD differential scanning calorimetry |
| url | http://www.mdpi.com/2075-4701/6/8/180 |
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