Application of DSC Method in Studies on Phase Transitions of Ni Superalloys
| Autor: | Jaroslaw Piątkowski, Roman Przeliorz |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Phase transition
Materials science Specific heat Innovative materials and casting technologies Metals and Alloys Thermodynamics 02 engineering and technology 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering Nickel superalloys Superalloy 03 medical and health sciences 0302 clinical medicine Differential scanning calorimetry lcsh:TA401-492 lcsh:Materials of engineering and construction. Mechanics of materials 030212 general & internal medicine 0210 nano-technology |
| Zdroj: | Archives of Foundry Engineering, Vol 17, Iss 4, Pp 133-136 (2017) |
| ISSN: | 2299-2944 |
| Popis: | The paper presents results of calorimetric studies of foundry nickel superalloys: IN100, IN713C, Mar-M247 and ŻS6U. Particular attention was paid to determination of phase transitions temperatures during heating and cooling. The samples were heated to a temperature of 1500°C with a rate of 10°C⋅min-1 and then held at this temperature for 5 min. After a complete melting, the samples were cooled with the same rate. Argon with a purity of 99.99% constituted the protective atmosphere. The sample was placed in an alundum crucible with a capacity of 0.45 cm3. Temperature and heat calibration was carried out based on the melting point of high-purity Ni. The tests were carried out by the differential scanning calorimetry (DSC) using a Multi HTC high-temperature calorimeter from Setaram. Based on the DSC curves, the following temperatures were determined: solidus and liquidus, dissolution and precipitation of the γ’ phase, MC carbides and melting of the γ’/γ eutectic. In the temperature range of 100-1100°C, specific heat capacity of the investigated superalloys was determined. It was found that the IN713C and IN100 alloys exhibit a higher specific heat while compared to the Mar-M247 and ŻS6U alloys. |
| Databáze: | OpenAIRE |
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