Journal ArticleDOI
Precipitation hardening in ternary alloys of the AlScCu and AlScSi systems
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In this article, the processes of precipitation hardening in cast ternary alloys of the AlScCu and Si and V (AlSiSc) phases were studied in the temperature range of aging from 100 to 450°C and at exposures to 200 h.Abstract:
The processes of precipitation hardening in cast ternary alloys of the AlScCu and AlScSi systems were studied in the temperature range of aging from 100 to 450°C and at exposures to 200 h It was shown that the CuAl2 and ScAl3 phases were involved in the process of aging in ternary AlScCu alloys, and the Si and V (AlSiSc) phases, in ternary AlScSi alloys with excess silicon in a supersaturated solid solution The V phase was for the first time revealed as the hardening phase in aluminum alloysread more
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Scandium in aluminium alloys
J. Røyset,N. Ryum +1 more
TL;DR: A considerable part of the available literature on scandium in aluminium alloys is reviewed in this article, with emphasis on the aluminium rich part of diagrams, including a wide range of ternary Al-Sc-X phase diagrams and a few higher order phase diagrams.
Journal ArticleDOI
The solidification behaviour of dilute aluminium–scandium alloys
TL;DR: In this paper, the authors investigated the solidification behavior of dilute Sc containing Al alloys and found that Sc additions greater than the eutectic composition (0.55 wt%) produced a remarkable refinement in the grain size of aluminium castings, due to the formation of the primary Al3Sc intermetallic phase during solidification.
Journal ArticleDOI
Role of silicon in accelerating the nucleation of Al3(Sc,Zr) precipitates in dilute Al–Sc–Zr alloys
Christopher Booth-Morrison,Zugang Mao,M. Diaz,David C. Dunand,Chris Wolverton,David N. Seidman +5 more
TL;DR: In this paper, the effects of adding 0.02 or 0.06 at.% Si to Al-Sc-Zr alloys were studied to determine the impact of Si on accelerating Al3(Sc,Zr) precipitation kinetics in dilute Al−Sc-based alloys.
Journal ArticleDOI
Eutectic Al–Si–Cu–Fe–Mn alloys with enhanced mechanical properties at room and elevated temperature
Enhui Wang,Xidong Hui,G.L. Chen +2 more
TL;DR: In this article, a novel eutectic Al-Si-Cu-Fe-Mn alloy with ultimate tensile strength up to 336 MPa and 144.3 MPa at room temperature and 300 °C, respectively, was reported.
Journal ArticleDOI
Effect of solution treatment on precipitation behaviors and age hardening response of Al–Cu alloys with Sc addition
TL;DR: In this article, the influence of solution treatment on precipitation behaviors and age hardening response of Al 2.5 ¼ Cu-0.3 ¼ Sc alloys was investigated, in comparison with Sc-free one.
References
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The coarsening behaviour of θ″ and θ′ precipitates in two Al-Cu alloys
J.D. Boyd,R.B. Nicholson +1 more
TL;DR: In this article, the coarsening kinetics of disc-shaped particles were investigated using the Lifshitz-Wagner theory, modified for the case of discshaped particles.