Further results on creep behaviour of sand-cast Mg–2.8Nd–0.8Zn–0.5Zr–0.3Gd alloy at 0.56 to 0.61Tm under stresses 40 to 90MPa

Abstract An earlier study of the creep behaviour of Elektron 21 alloy has been extended to 290°C (0.61Tm; Tm: melting temperature). The combined results confirm a stress exponent of creep rate close to 6, but with an activation energy for creep of (310 ± 20) kJ/mol for 240 to 290°C and 40 to 90 MPa. Possible mechanisms giving rise to this behaviour are discussed.