X-ray diffraction studies on cold-rolled/solid-solution treated α + β Mg-10.2Li-1.2Al-0.4Zn alloy
Journal
Journal of Alloys and Compounds
Journal Volume
563
Pages
234-241
Date Issued
2013
Author(s)
Abstract
XRD measurements were conducted on an α + β Mg-10.2Li-1.2Al-0. 4Zn (LAZ1010) alloy. In 80% cold-rolled plate, strong (0 0 0 2) α peak intensity is found on the rolling plane, and 2θ values of θ-MgLi2Al peaks are shifted slightly to higher angle, indicating that Mg atoms in θ phase are partly replaced by Al atoms during severe cold-rolling. Solid-solution treated specimens aged at room temperature reach the maximal hardness after ≈20 h of aging. XRD tests show that θ precipitates is much smaller in size than α ones, which may be attributed to the hardening phenomenon observed in the solid-solution treated and aged LAZ1010 alloy. During aging, the decrease in hardness of solid-solution treated specimens with severe cold-rolling at its maximal hardness is slower than that without. It is because specimens with severe cold-rolling have abundant nucleus sites and thus have θ precipitates of smaller size.© 2013 Elsevier B.V. All rights reserved.
SDGs
Type
journal article