Determination of γ′+γ / γ Phase Boundary in Ni-Al-Cr System Using DTA Thermal Analysis
| Autor: | K. Rzyman, Tomasz Maciąg |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
lcsh:TN1-997 Phase boundary Materials science Ni-Al-Cr Metals and Alloys Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences order-disorder transition Ni3Al 0103 physical sciences lcsh:TA401-492 lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology Thermal analysis DTA thermal analysis lcsh:Mining engineering. Metallurgy |
| Zdroj: | Archives of Metallurgy and Materials, Vol 61, Iss 1, Pp 237-240 (2016) |
| ISSN: | 2300-1909 |
| Popis: | Mechanical properties at elevated temperature, in modern alloys based on intermetallic phase Ni3Al are connected with phase composition, especially with proportion of ordered phase γ′ (L12) and disordered phase γ (A1). In this paper, analysis of one key systems for mentioned alloys - Ni-Al-Cr, is presented. A series of alloys with chemical composition originated from Ni-rich part of Ni-Al-Cr system was prepared. DTA thermal analysis was performed on all samples. Based on shape of obtained curves, characteristic for continuous order-disorder transition, places of course of phase boundaries γ′+γ / γ were determined. Moreover, temperature of melting and freezing of alloys were obtained. Results of DTA analysis concerning phase boundary γ′+γ / γ indicated agreement with results obtained by authors using calorimetric solution method. |
| Databáze: | OpenAIRE |
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