Characterization and analysis of hot compression behaviors of an ultralight Mg-Li-Al alloy
Abstract
This paper aims at establishing microstructure/property/processing correlations in a thermomechanically processed ultralight Mg-3.5Li-1Al (wt%) alloy. The thermomechanical cycle consists of uniaxial compression at temperatures of 250 °C, 350 °C, and 450 °C and strain rates of 1, 0.1, 0.01, and 0.001/s using a Gleeble® 3500 thermal-mechanical simulation testing system. Upon testing, the samples were quenched, sectioned, and perfectly polished to run nanoindentation tests. The nanoindentation tests were performed to study post-treatment mechanical properties and related phenomena (i.e. Portevin–Le Chatelier effect) at different conditions in the processed samples. Microstructural changes, hot compression stress-strain curves, and nanoindentation load/displacement response are discussed in detail in the present research. The correlations between flow stress, strain rate, and deformation temperature were assessed. Besides, using the Zener-Hollomon parameter, the effects of thermomechanical parameters (temperature and strain rate) on deformation response were analyzed.
Publication Title
International Journal of Lightweight Materials and Manufacture
Recommended Citation
Islam, R., Hadadzadeh, A., Wells, M., & Haghshenas, M. (2019). Characterization and analysis of hot compression behaviors of an ultralight Mg-Li-Al alloy. International Journal of Lightweight Materials and Manufacture, 2 (3), 217-226. https://doi.org/10.1016/j.ijlmm.2019.04.004
