Ultrahigh strength MgZnCa eutectic alloy/Fe particle composites with excellent plasticity

• Jingfeng Wang^a, Song Huang^a, Yang Li^a, Yiyun Wei^b, Shengfeng Guo^c, Fusheng Pan^a

• ^a National Engineering Research Center for Magnesium Alloys, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China

• ^b China Academy of Engineering Physics, Mianyang 621900, PR China

• ^c School of Materials Science and Engineering, Southwest University, Chongqing 400715, PR China

Abstract

The influence of Fe particle addition on MgZnCa eutectic-composition as-cast alloy was investigated. No difference was observed in the other main crystal phases, except for the Fe particles. Compared with the as-cast Mg₆₉Zn₂₇Ca₄ ternary system, the alloy with Fe added exhibited higher strength and plasticity. The fracture stress of Mg₆₉Zn₂₇Ca₄ with 4 vol% Fe reached nearly 700 MPa with 12% plasticity. The porous Fe particles increased the strength and toughness of the alloy.

http://www.sciencedirect.com/science/article/pii/S0167577X14016383