[PDF] Top 20 Effect of Lead Additions on Microstructure and Casting Properties of AZ91 Magnesium Alloy

... Pb additions were alloyed 1 min before casting to avoid losses of Zn and Pb due to ...molten alloy was then cast into a cast iron mould (preheated to 250°C) having 30 mm diameter and 170 mm length ... See full document

... mechanical properties of fullerene powder dispersed AZ91 magnesium alloy composites were ...The AZ91 with 0, 1 and 5 mass% fullerene additions were produced by extruding a ... See full document

... Mg-Zn alloy: d = 10 ...mechanical properties such as the Hall-Petch equation [2], for example, to gain some insight as to the mechanical strength of the ...cast alloy properties for various ... See full document

... local microstructure of the processed materials (grain boundaries, intermetallic phases and also precipitates created during the heat ...microstructural properties, while hardness testing (HV2) was ... See full document

... the effect of the cooling rate and molten metal temperature on the microstructure and mechanical properties of a sub- rapidly solidi fi ed magnesium alloy, Mg ­ 10Al ­ ...suction ... See full document

... extrusion casting and pressure crystallization ...normal casting processes, keeps entrapped gases in solution and squeeze molten metal from hot spots to incipient shrinkage ...mechanical properties ... See full document

... die-cast magnesium alloys; AS21, 38) AZ91 38–40) and ...AM50 alloy, indicating that the creep of the alloy is predominantly occupied by the accelerating creep ... See full document

... AZ91D magnesium alloy were anodized by DC or AC electrolysis in a solution of phosphate and ammonium salt in which the anodized layer is formed by local discharge, followed by rapid ...mechanical ... See full document

... on AZ91 alloy has been simulated with the three-dimensional numerical modeling based on the ABAQUS/ ...deformation, microstructure evolution, the asymmetric flow of material, and ...the effect ... See full document

... and magnesium alloys are used in a wide variety of structural and nonstructural applications, due to they are light-weight, exhibit good strength and stiffness at both room and elevated temperatures and have high ... See full document

... studied effect of Pr additions on microstructure and mechanical properties of die-cast AZ91D magnesium alloy, by the addition of ...base alloy, which were prepared by ... See full document

... tensile properties of cast magnesium- based alloys depend on the cross-sectional thickness of the casting and/or the distance from the mold surface of the ...the microstructure of the part and ... See full document

... Because of their low density, high specific strength and stiffness, Mg alloys have become candidate materials for many applications in microelectronics and in the automobile and aerospace industries. 1­3) The Mg ­ Al ... See full document

... sulting microstructure slightly differs from the first one, resulting in smaller zones of lamellar structure together with random oriented regions and coarse globular β-Sn rich phase (Figure ... See full document

... of alloy with DAS 51 μm, the cyclic softening behavior was not observed at RT and 200C, where the tension and compression peak stress were maintained by repeated defor- ... See full document

... In this work, a finite element model is established to study the microstructure evolution during FSW of AZ91 magnesium alloy. The hardening parameter, the recovery parameter, and the strain ... See full document

... The microstructure pointed to the presence of α-Mg solid solution primary phase which was surrounded by a eutectic region of intermetallic and ...composite alloy due to the addition of Ca and Zn in the ... See full document

... Abstract: Modeling the flow curves of materials at elevated temperatures is the first step in mathematical simulation of the hot deformation processes of them. In this work, a comparative study was provided to examine ... See full document

... 3.2 Superheat treatment and manganese compounds The relationships between superheat treatment and the presence of manganese-bearing particles are listed in Table 3. Micrographic examination did not reveal any particles ... See full document

... of magnesium alloys are restricted to a few areas due to inferior surface hardness, wear resistance and corrosion ...surface properties of magnesium alloys [16, ...AZ80 magnesium alloy ... See full document