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

Zhou, W.; Kong, L.; Li, J.; Zhou, Y.

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 (CuZrAl)Cr ( 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 Δ T or parameter γ 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%.

CHROMIUM; METALLIC glasses synthesis; MECHANICAL properties of metals; SUPERCOOLED liquids; RAPID solidification processing of metals; MATERIAL plasticity; COPPER-zinc alloys; ALUMINUM-zinc alloys

Journal of Materials Science, 2012, Vol 47, Issue 12, p4996

0022-2461

Academic Journal

10.1007/s10853-012-6375-5