Influence of Pre‐Solution Treatment on Microstructure and Mechanical Properties of Mg–Gd–Nd–Zn–Zr Alloy Processed by ECAP

Abstract

Equal channel angular pressing (ECAP) works as a useful method for microstructure refinement and strength hardening. Billets of the as‐cast and solution‐treated Mg–Gd–Nd–Zn–Zr alloy are processed by ECAP to investigate influence of pre‐solution treatment on the microstructure and mechanical properties of the alloy. The average grain size is refined from 80 to 1.5 µm after eight passes at 375 °C. Both yield stress and ultimate tensile strength of the alloy in two conditions are improved after multi‐pass ECAP. The retained broken eutectics as well as precipitation produced during ECAP may provide a stronger strength. Compared to the as‐cast alloy, solution‐treated alloy possesses higher elongation after ECAP. The variation in strength and ductility can be explained by the texture modification and microstructure evolution.

Multimodal Microstructure and Mechanical Properties of AZ91 Mg Alloy Prepared by Equal Channel Angular Pressing plus Aging

“…As the lightest structural metal on earth, magnesium has obvious advantages of rich resource, ease of recycling, and good biocompatibility [1][2][3]. These unique properties make magnesium and its alloys attractive for automotive, aerospace, and biomedical applications.…”

Mechanical Properties and Corrosion Behavior of Silica Nanoparticle Reinforced Magnesium Nanocomposite for Bio-Implant Application

“…The corrosion and mechanical characteristics of a magnesium matrix composite may be altered by choosing reinforcing elements with varied content, distribution, and size. Numerous reinforcing materials have been used in this respect, including hydroxyapatite (HAP) [10], zinc oxide [11], bioactive glass (BG) [12], calcium particles [13], calcium polyphosphate particles (CPP), and calcium phosphate-based ceramics [14,15]. In addition to these materials, many oxide materials have been employed as fillers to create Mg-based composites, including alumina (Al 2 O 3 ) [16], titania (TiO 2 ) [17], zirconia (ZrO 2 ) [18], and silica (SiO 2 ) [19].…”