Effect of Cr addition on the formation of the decagonal quasicrystalline phase of a rapidly solidified Al-Ni-Co alloy

Recent developments on fabrication of Al‐matrix composites reinforced with quasicrystals: From metastable to conventional processing

“…Quasicrystal-forming systems Most of the metallic quasicrystal-forming systems are Al-based, with hundreds of alloy compositions found to date. Among the most important quasicrystal-forming Al-based systems are Al-Mn [1], Al-Cr [6], Al-Fe-Cr [7], Al-Cu-Fe [8], Al-Ni-Co [9,10], Al-Cu-Co [9], Al-Cu-Fe-Cr [11], Al-Pd-Mn [12], and their modifications through alloy addition [13,14,15,16]. Most of these quasicrystals were discovered in the early 1990s by Inoue, Tsai and collaborators.…”

“…Several examples can be found in the literature about Al-based quasicrystals fabricated under low solidification conditions. The most studied one belongs to the Al-Cu-Fe system [2,25,26,27], although a significant amount of papers have been published on Al-Ni-Co [15,28,29,30,31,32] and Al-Cu-Fe-Cr [5,11,14,33] systems. Usually, it is observed that only alloys containing three or more elements can form quasicrystals under these processing conditions.…”

Recent developments on fabrication of Al-matrix composites reinforced with quasicrystals: From metastable to conventional processing

“…Quasicrystal-forming systems Most of the metallic quasicrystal-forming systems are Al-based, with hundreds of alloy compositions found to date. Among the most important quasicrystal-forming Al-based systems are Al-Mn [1], Al-Cr [6], Al-Fe-Cr [7], Al-Cu-Fe [8], Al-Ni-Co [9,10], Al-Cu-Co [9], Al-Cu-Fe-Cr [11], Al-Pd-Mn [12], and their modifications through alloy addition [13,14,15,16]. Most of these quasicrystals were discovered in the early 1990s by Inoue, Tsai and collaborators.…”

“…Several examples can be found in the literature about Al-based quasicrystals fabricated under low solidification conditions. The most studied one belongs to the Al-Cu-Fe system [2,25,26,27], although a significant amount of papers have been published on Al-Ni-Co [15,28,29,30,31,32] and Al-Cu-Fe-Cr [5,11,14,33] systems. Usually, it is observed that only alloys containing three or more elements can form quasicrystals under these processing conditions.…”

Ion-Plasma Spraying and Electron-Beam Treatment of Composite Cr-Al-Co-ZrO2-Y2O3 Coating on the Surface of Ni-Cr Alloy

“…Despite the fact that Ni-Cr-Al alloys have high heat resistance, to protect turbine blades, coatings are required that are capable of long-term operation under load at temperatures up to 1150-1200 • C. One of the ways to solve this problem is to create combined metal and metal-ceramic high-temperature coatings; for example, Al-Cr based coatings. The coatings' composition, along with aluminum, can include other alloying additives (for example, Ta, Si, Ti, Co, and Y), which reduce the oxidation rate and affect the processes of diffusion interaction of the coating with the base of heat-resistant alloys [10][11][12].…”