|About this Abstract
||MS&T23: Materials Science & Technology
||Interface-mediated Phenomena in Structural Materials
||Mechanical Behavior and Thermal Stability of Nanotwinned Al Alloys
||Xinghang Zhang, Nicholas Richter , Yifan Zhang, Mingyu Gong, Jian Wang
|On-Site Speaker (Planned)
Twin boundaries in nanotwinned metals have been intensively investigated as they improve the mechanical strength and ductility of metallic materials. In this study, we review recent studies on several nanotwinned Al alloys, where incoherent twin boundaries play a decisive role in tailoring the strength, plastic deformability and anisotropy of nanotwinned alloys. We will discuss the fundamental deformation mechanisms in nanotwinned Al alloys unpinned by these twin boundaries. Furthermore, certain solutes have shown to improve the thermal stability of nanotwinned microstructures significantly. We will discuss the criteria for selection of solutes that improve the thermal stability of nanotwinned alloys. This work highlights the possibilities for further improvement of mechanical strength and thermal stability of nanotwinned Al alloys.