A Study of Aging Treatment on the Mg-10Li-0.5Zn Alloy

Abstract

In this study, an aging treatment was performed to investigate the microstructures and mechanical properties of Mg-10Li-0.5Zn (LZ101) alloy. Experimental results show that the LZ101 Mg-Li alloy exhibits a dual-phase microstructure of (HCP) and (BCC) phases, and has a good ductility. The 723 K solid-solution treated LZ101 Mg-Li alloy exhibits a single structure and produces precipitates after natural and artificial aging. The solid-solution treated specimen has lower mechanical strength and higher elongation than the as-extruded one. The aged specimens exhibit a typical behaviour of precipitation hardening. The maximum tensile strength can reach 188 MPa, 180 MPa and 173 MPa, corresponding to the natural aging of 345.6 ks, 423 K aging of 21.6 ks and 523 K aging of 10.8 ks.

Strengthening Mechanisms of Magnesium-Lithium Based Alloys and Composites

“…This phenomenon remarkably promotes the bonding strength of Mg-Li interface in the alloy. A study of Mg-10Li-0.5Zn alloy by Wang et al [9] found that the mechanical strength of the alloys steadily increases with aging time at room temperature. Maximum tensile strength achieved of 188 MPa, 180 MPa, and 173 MPa corresponds to the room temperature aging of 345.6 ks, 423 K aging of 21.6 ks, and 523 K aging of 10.8 ks, respectively.…”

“…Figure 2 shows the sample hardness versus aging time for the solution-treated LZ101 alloy aged at room temperature, 423 K and 523 K, respectively. The precipitates dispersed in -phase effectively increase the mechanical strength of LZ101 alloy, exhibiting precipitation hardening at various aging temperatures [9,18].…”

Study of a New Kind of Adsorbent for Removal of Nitric Oxides

“…Nitric dioxide and nitric oxide are the major hazardous air pollutants, which caused serious environmental problems such as tropospheric ozone, photochemical smog and acid rain [1,2]. A lot of traditional methods and techniques included ammonia selective catalytic reduction (SCR) [3], nitric oxides catalytic decomposition [4], adsorption [5], wet scrubbing [6] etc. Chemical adsorbents were used widely which played an important role in the field of NOx pollutants.…”

Tensile Mechanical Properties and Failure Behaviors of Friction Stir Processing (FSP) Modified Mg-Al-Zn and Dual-Phase Mg-Li-Al-Zn Alloys

“…But Mg-Li alloys exhibit low mechanical strength and they are not very useful in engineering applications. Recent studies investigated the effects of cold working, addition of alloying elements, aging and precipitation hardening on improving mechanicals of Mg-Li alloys[69][70][71][72][73][74][75][76][77][78]. Al and Zn are the commonly used elements, and Mg-Li-Al (LA-series), Mg-Li-Zn (LZ-series) and Mg-Li-Al-Zn (LAZ-series) are generally applied Mg-Li alloys.…”