|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Influence of Cluster Hardening on Strength and Strain Hardening Behavior of Various Aluminum Alloys
||Philip Aster, Lukas Stemper, Florian Schmid, Peter Uggowitzer, Stefan Pogatscher
|On-Site Speaker (Planned)
Cluster hardening, i.e. the formation of clusters primarily instead of classical metastable hardening phases, depicts a promising approach for strengthening with a reduced loss of ductility in aluminum alloys. In this context we investigated several alloys, including AlMgSi alloys with different Mg/Si ratios as well as AlMgZn alloys with varying ratios of Mg to Zn. Both alloy types were alloyed with or without Cu. For cluster hardening aging temperatures of 100 °C and lower were applied after solution annealing to prevent the formation of conventional metastable hardening phases. Aging characteristics were evaluated using hardness testing and tensile testing. An advanced interpretation of the tensile testing curves including modelling by the Kocks-Mecking approach was conducted to get insight into the strain hardening behavior. The results show a comparable good aging response in combination with significantly enhanced forming parameters, such as uniform elongation or work hardening.
||Aluminum, Mechanical Properties,