Strength and ductility with {1011} - {1012} double twinning in a magnesium alloy.

ABSTRACT: Based on their high specific strength and stiffness, magnesium alloys are attractive for lightweight applications in aerospace and transportation, where weight saving is crucial for the reduction of carbon dioxide emissions. Unfortunately, the ductility of magnesium alloys is usually limited. It is thought that one reason for the lack of ductility is that the development of - double twins (DTW) cause premature failure of magnesium alloys. Here we show with a magnesium alloy containing 4 wt% lithium, that the same impressively large compression failure strains can be achieved with DTWs as without. The DTWs form stably across the microstructure and continuously throughout straining, forming three-dimensional intra-granular networks, a potential strengthening mechanism. We rationalize that re

SUBMITTER: Lentz M 

PROVIDER: S-EPMC5482718 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature