Microstructure versus size: nano/microscale deformation of solute-strengthening Al alloys via pillar compression tests

• Main Authors: Shaohua Yan, Haiyang Zhou, Qing H. Qin
• Format: Article
• Language: English
• Published: Taylor & Francis Group 2019-02-01
• Series: Materials Research Letters
• Subjects: Solutes strengthening; dislocation; compression test; mechanical properties
• Online Access: http://dx.doi.org/10.1080/21663831.2018.1553802

Effect of solutes, crystal orientation, sample’s size, and dislocation density on the nano/microscale deformation of solute-strengthening Al alloys has been investigated via pillar compression tests. The Mg-solute-strengthening pillar with dislocation density of 1012 m−2 shows size- and orientation-dependent strength, while the strength of Si-Mg-solute-strengthening pillar with dislocation density of 1013 m−2 is size- and orientation- independent. With increasing the dislocation density, the strength of pillars increased and become size-independent.