Effects of Cr addition on glass-forming ability and mechanical properties of Cu–Zr–Al bulk metallic glass

Abstract

Effects of a small amount addition of Cr on glass-forming ability (GFA) and mechanical properties of Cu-Zr-Al bulk metallic glass were investigated. The GFA of (Cu 46 Zr 46 Al 8 ) 100-x Cr x (x = 0, 0.25, 0.5, 0.75, and 1 at%) alloys tends to decrease with the increasing Cr content. A good correlation between the GFA and the temperature interval of supercooled liquid region DT x or parameter c exists in these alloys. Addition of an appropriate amount of Cr can significantly improve the plasticity of the alloys. The bulk metallic glass with x = 0.5 exhibits promising mechanical properties with high fracture strength of 1870 MPa and obvious plastic strain of 2.23%.

Formation mechanism of Al2O3‐YAG amorphous ceramic coating deposited via atmospheric plasma spraying

“…As one of the numerous amorphous materials, inorganic amorphous coatings have been widely used in mechanical, electrical, magnetic, wear‐resistant, and anticorrosion fields 3–5 . The general inorganic amorphous coatings are mainly amorphous alloys, 6–9 such as Fe‐based, Ni‐based, and Co‐based amorphous alloys. However, in the early research of amorphous alloys, the amorphous alloys were primarily formed in the shape of thin strip or filament due to the high cooling speed of molten metal powder, so their application scope was severely limited due to the small size 2,5 .…”

Formation Mechanism of Al2O3-YAG Amorphous Ceramic Coating Deposited via Atmospheric Plasma Spraying

“…As one of the numerous amorphous materials, inorganic amorphous coatings have been widely used in mechanical, electrical, magnetic, wear-resistant and anti-corrosion elds [3][4][5]. The common inorganic amorphous coatings are mainly amorphous alloys [6][7][8][9], such as Fe-based, Ni-based and Co-based amorphous alloys. However, in the early research of amorphous alloy, because the cooling speed of molten metal powder was very fast, the amorphous alloys were mostly formed in the shape of thin strip or lament, and their application scope was greatly limited due to the small size [2,5].…”

Glass Forming Ability and Corrosion Resistance of Zr-Cu-Ni-Al-Ag Bulk Metallic Glass

“…Considering that the equipment requirement is relatively high for the former method, most researchers used the latter one. Minor alloying has been proved to be a simple and effective way to develop large-size BMGs, such as Pd- [9,10], Fe- [11], Co- [12], Ni- [13], Mg- [14], Cu- [15], and Zr-based [16] BMGs. Among them, Zr-based BMGs have attracted increasing attention due to their high glass-forming ability and wide supercooled liquid region.…”