Tuning homogenization of high-strength aluminum alloys through thermodynamic alloying approach
Yawen Wang, Longgang Hou, Hui Su, Qingkun Tian, Kangcai Yu, Dmitry Eskin, L. Katgerman, Linzhong Zhuang
Abstract
The relationship among the composition, microstructure and homogenization process for Al-Zn-Mg-Cu alloys was clarified by the experiments and thermodynamic calculations. The optimal one-/two-step homogenization processes were suggested based on the coarse residual phase. A critical (Cu + Mg) level (depending on the solubility limit) and a linear correlation between Cu and Mg contents (depending on the stoichiometric balance) were revealed for guiding the homogenization processes. A thermodynamic approach was established for composition design of Al-Zn-Mg-Cu alloys.
Topics & Concepts
Homogenization (climate)Materials scienceMicrostructureEutectic systemAlloyAluminiumMetallurgySolubilityChemistryPhysical chemistryBiodiversityBiologyEcologyAluminum Alloy Microstructure PropertiesAluminum Alloys Composites PropertiesMicrostructure and mechanical properties