Effect of Er on properties of Zr-based bulk metallic glasses

ABSTRACT

(Zr_0.6336Cu_0.1452Ni_0.1012Al_0.12)_100-xEr_x(x = 0∼6) bulk metallic glasses were fabricated by copper mould suction casting method, and the effect of Er on properties was studied. The compressive plastic strain (ε_p) and compressive strength (σ_max) at room temperature increases first and then decreases with the increase of Er content. The compressive plastic strain (ε_p) of the specimen is 35.1% when x = 2.6, which is about eight times than that of the specimen with x = 0. The compressive strength (σ_max) is 2513 MPa, which is much higher than that of the specimen with x = 0. It indicates that Zr-based bulk metallic glasses could be strengthened and toughened by adding Er. The thermal stability decreases gradually and the glass-forming ability increases first and then decreases with the increase of Er content.

KEYWORDS:

• Bulk metallic glasses
• plastic strain
• compressive strength
• thermal stability
• glass-forming ability

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [grant numbers 51661016, 51571105, 51551101, 51661017]; Wenzhou Public Welfare Science and Technology Project [grant number 2011CB612203].