Effect of Barothermal Treatment on the Structure and the Mechanical Properties of a High-Strength Eutectic Al–Zn–Mg–Cu–Ni Aluminum Alloy
| Autor: | A. G. Padalko, Torgom Akopyan, Zh. A. Karpova, Nikolay A. Belov |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Alloy Metallurgy Metals and Alloys chemistry.chemical_element 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Casting Isothermal process chemistry Hot isostatic pressing Aluminium 0103 physical sciences engineering Hardening (metallurgy) 0210 nano-technology Porosity Eutectic system |
| Zdroj: | Russian Metallurgy (Metally). 2017:922-927 |
| ISSN: | 1555-6255 0036-0295 |
| DOI: | 10.1134/s0036029517110027 |
| Popis: | The effect of barothermal treatment by hot isostatic pressing (HIP) on the structure and the properties of castings of a promising high-strength cast aluminum alloy, namely, nikalin ATs6N4 based on the Al‒Zn–Mg–Cu–Ni system, has been studied using two barothermal treatment regimes different in isothermal holding temperature. It is shown that the casting porosity substantially decreases after barothermal treatment; eutectic phase Al3Ni particles are additionally refined during exposure to the barothermal treatment temperature: the higher the HIP temperature, the more substantial the refinement. The improvement of the casting structure after HIP increases their mechanical properties. It is found, in particular, that the plasticity of the alloy in the state of the maximum hardening increases by a factor of more than 8 as compared to the initial state (from 0.82 to 6.9%). |
| Databáze: | OpenAIRE |
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