GRAIN REFINEMENT OF MAGNESIUM AND AZ91E MAGNESIUM ALLOY BY ADDITION OF MgB 2 INOCULANT by Payam Emadi, B.Eng, Ryerson University, 2014 A thesis presented to Ryerson University in partial fulfillment of the requirements for the
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This work focused on the correlation between the microstructure and the mechanical properties of as-cast AZ91 alloy. An exhaustive characterization of the grain size, secondary dendrite arm spacing (SDAS) distribution, and fraction of Mg17Al12 using optical and …
Materials Science and Engineering A308 (2001) 38–44 Effects of bismuth and antimony additions on the microstructure and mechanical properties of AZ91 magnesium alloy Yuan Guangyin a,*, Sun Yangshan b, Ding Wenjiang a a Institute of Foundry Engineering, College of Materials Science and Engineering, Shanghai Jiaotong Uni6ersity, Shanghai,
The microstructure of the AZ91 alloy via LFC consists of dominant alpha-Mg and beta-Mg-17 Al-12 as well as a new phase Al-32 Mn-25 with size of about 5 - 50 mu m, which has not been detected in
1/6/2017· The main aim of this study was to investigate the properties of an AZ91 alloy coated with nanostructured hydroxyapatite (HA) prepared by radio frequency (RF) magnetron sputtering. The bioactivity and biomineralization of the AZ91 magnesium alloy coated with HA were investigated in simulated body fluid (SBF) via an in vitro test.
In this study, grain refinement ability of stir-casted Al-SiC composite for Mg-Al-based alloy was investigated to confirm the feasibility of industrial appliion. Commercialized Al-20 vol.-% SiC composite ingot was used in AZ91 alloy as a grain refiner, and grain size of AZ91 alloy dramatically reduce from 650 to 74 µm and become uniform with 0.7 wt-% Al-SiC composite addition.
205 Properties Mechanical properties of magnesium alloy AZ91 at elevated temperatures Microstructure has distinctly dendritic character, massive phases form almost continuous formations in interdendritic areas, which represent places of initiation and propagation
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16 The Recent Research on Properties of Anti-High Temperature Creep of AZ91 Magnesium Alloy Xiulan Ai and Gaofeng Quan School of Material Science and Engineering, Dalian Jiaotong University, China 1. Introduction In all magnesium alloys, AZ91 is easy to
Mechanical Properties of Magnesium and Magnesium Alloys Abstract: As with metal manufactures in general, the tensile and other properties of the magnesium materials depend upon the composition, condition (whether cast or wrought), details of fabriion, heat treatment, and other factors.
In this study, the effects of cerium (Ce) addition on the friction and wear properties of surface welding AZ91 magnesium alloys were evaluated by pin-on-disk dry sliding friction and wear tests at normal temperature. The results show that both the friction coefficient
The main aim of this study was to investigate the properties of an AZ91 alloy coated with nanostructured hydroxyapatite (HA) prepared by radio frequency (RF) magnetron sputtering. The bioactivity and biomineralization of the AZ91 magnesium alloy coated with HA were investigated in simulated body fluid (SBF) via an in vitro test.
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Liu Liufa, Ding Hanlin, Ding Wenjiang (Shanghai Jiaotong University, Shanghai 200030, China);Dynamic Precipitation of β Phase during Extrusion Process and Its Effects on the Microstructures and Tensile Properties of AZ91 Magnesium Alloy[J];Rare Metal 4
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Mechanical properties of magnesium alloy AZ91 at elevated temperatures
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Corrosion behavior of AZ91 magnesium alloy treated by plasma immersion ion implantation and deposition in artificial physiological fluids Chenglong Liu a, Yunchang Xin a,b, Xiubo Tian a,c, Paul K. Chu a, a Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
using magnesium alloy AZ91 as raw material, and one component was manufactured using both aluminium alloy A.413, and magnesium alloy AZ91. Mechanical properties of high pressure die casting parts depend on various parameters such as, thickness of
Study of Selected Properties of Magnesium Alloy AZ91… 167 a) A b) B1 c) B2 d) B3 e) B4 f) B5 Figure 1. Structure of magnesium alloy AZ91 in initial state (A) and after heat treatment. Table 1. Mechanical properties of the alloy AZ91 Sample Rp0,2 [MPa]
AZ91 magnesium alloy was subjected to a deep cryogenic treatment. X-ray diffraction (XRD), scanning electronic microscopy (SEM), and transmission electronic microscopy (TEM) methods were utilized to characterize the composition and microstructure of the treated samples. The results show that after two cryogenic treatments, the quantity of the precipitate hardening β phase increases, and the
AZ91 magnesium alloy is the most popular commercially available magnesium alloy. This alloy shows superior castability and good mechanical properties coined with good corrosion resistance for the high purity versions of the alloy.
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Physical properties Magnesium alloys are materials of interest mostly due to their high strength-to-weight ratios, exceptional machinability and low cost. They have a low specific gravity of 1.74 g/cm 3 and a relatively low Young’s modulus (42 GPa) compared …
AZ91−xGd (x = 0, 0.3, 0.6, 0.9 wt%, mass fraction) magnesium alloy specimens were prepared by die casting, the main existing forms of rare earth Gd in AZ91 magnesium alloy at different cooling rates and their effects on microstructure and room temperature tensile properties were investigated. The results show that rare earth Gd exists in AZ91 magnesium alloy mainly in the forms of Al2