Journal
MATERIALS RESEARCH INNOVATIONS
Volume 18, Issue -, Pages 50-53Publisher
MANEY PUBLISHING
DOI: 10.1179/1432891713Z.000000000350
Keywords
Cast aluminium alloys; High strength; Economically doped; Thermally stable; Heat resistant; Specific strength
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The phase composition of the Al-Ni-Mn-Fe-Si-Zr system is analysed as applied to heat resistant nikalines (aluminum alloys of a new generation based on Ni containing eutectic), which are strengthened by the Al3Zr (L12) nanoparticles. It is shown that the presence of iron and silicon considerably complicates the phase analysis when compared with the AN4Mts2 base alloy. Silicon strongly widens the crystallization range, which increases the tendency of the alloy to form hot cracks during casting. It is shown that economically doped nikaline AN2ZhMts substantially exceeds the most heat resistant cast aluminum alloys of the AM5 grade in the totality of its main characteristics (heat resistance and mechanical and production properties).
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