Achieving high strength and high ductility in magnesium alloys using severe plastic deformation combined with low-temperature aging

作者：Kim W J^*; Jeong H G; Jeong H T

来源：Scripta Materialia, 2009, 61(11): 1040-1043.

DOI：10.1016/j.scriptamat.2009.08.020

• Severe plastic deformation (SPD)
• Magnesium alloys
• Ductility
• Ultrafine-grained microstructure
• Aging

A novel method of fabricating age-hardenable magnesium alloys with high strength and high ductility was developed using high-ratio differential speed rolling combined with low-temperature aging. The ultrafine-grained Mg-9Al-1Zn alloy processed by this technique exhibited a high yield stress of >400 MPa and tensile elongations of 12-14%. The high strength could be attributed to grain size and particle strengthening effects, while the high ductility could be attributed to weakening of the basal texture component.

• 出版日期2009-12