alloy were studied. The results presented that the microstructure of AZ91 alloy is consisted the α-Mg phase and semi-continuous network of β-Mg 17 Al 12 intermetallics. For the as-cast AZ91 alloy, the average grain siz and the β phase volume fraction were 96.2
Spark Plasma Sintering (SPS) process has been used to develop a novel grain refiner Al-SiC master alloy for AZ91E Mg alloys. When the Al-SiC master alloy was added to molten AZ91E alloy, the Al matrix melted and allowed the SiC particles to distribute homogeneously throughout the molten AZ91E alloy. After addition of 0.1 wt.% Al-SiC master alloy to AZ91E alloy, the mean grain size decreased
KRÁL ET AL.: EFFECT OF GRAIN REFINEMENT IN AE42 MAGNESIUM ALLOY Table 2. Average values of Rp after different stabilization times. R p [Ω.cm 2] 5 minutes 168 hours extruded 80 ± 5 296 ± 47 ECAPed 121 ± 11 586 ± 71 part comprising L1, R2, RL, and Q2 is missing. is missing.
Cast Irons Miguel Angel Yescas-Gonzalez and H. K. D. H. Bhadeshia Cast irons typically contain 2-4 wt% of carbon with a high silicon concentrations and a greater concentration of impurities than steels. The carbon equivalent (CE) of a cast iron helps to distinguish the grey irons which cool into a microstructure containing graphite and and the white irons where the carbon is present mainly as
The results show that AZ31B magnesium alloy sheet has poor formability at room temperature with the total elongation of ~ 20%, the yield ratio is about 0.6 and the strain-hardening exponent is 0.18, while the plastic strain ratio is 1.58, and the earing ratio is-0
magnesium alloy AZ91 consisted of magnesium aluminum solid solution ( .-solid solution) dendrites and intermetallic phase of Mg 17 Al 12 which precipitate mainly along the grain boundaries, Fig. 1-a.
Tensile strength at elevated temperature showed that this alloy can withstand up to 150 MPa, dropped by 6.15% (12Mn-lONi wt. %) compared to D2 standard alloy. Corrosion test proved that corrosion rate is comparable to unmodified ductile Ni-resist. Three
Changes in alloy composition are a common way to achieve grain refinement by using magnesium [10,11], as well as other alloying materials or master alloys [12,13,14,15]. Changes in the alloy composition can alter the grain size in two ways, by increasing the nucleation rate, and also by causing a decreased rate of crystallization.
Carbon and Low-Alloy Steels Three acids will work to etch low carbon steel: nitric acid, ammonium persulfate, and iodide/potassium iodide. Mix as follows. Nitric Acid – mixture of 5 – 10% nitric acid with the balance being alcohol. Water will work, but alcohol is
Being a biocompatible metal with similar mechanical properties as bones, magnesium bears both biodegradability suitable for bone substitution and chemical reactivity detrimental in bio-aiences. To benefit its biomaterial appliions, we developed Mg-2.0Zn-0.5Zr-3.0Gd (wt%) alloy through hot extrusion and tailored its biodegradability by just varying the extrusion temperatures during alloy
8 Page 2 of 12 Bull. Mater. Sci. (2020) 43:8 layers at a lower normal load of 5 N increased the wear resistance at temperatures of 100–250 C. Severe softening of the alloy at temperatures above 300 C, dramatically reduced the wear resistance of the alloy. Zafari etal found that …
Tensile behaviour of squeeze cast AM100 magnesium alloy and its Al 2O 3 ﬁbre reinforced composites S. Jayalakshmi, S.V. Kailas, S. Seshan* Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560 012, India Received 22 Noveer
Magnesium alloys have shown desirable properties for potential appliion in biomaterial area, for example, high strength and Young modulus close to a natural 2.bone. However, the high dissolution rate of magnesium alloy is a problem due to
Figure 8: Macrostructure of Magnesium AE42 alloy with 12.5X magnifiion Figure 9: Microstructures of Magnesium samples a) Base metal b) Base metal + FSZ c) FSZ International Journal of Applied Engineering Research ISSN 0973-4562 Volume 12, Nuer 17 (2017) pp. 6647-6652
Where it is difficult to form magnesium alloys in the contour, aluminum alloy may be utilized. When this is done, it is necessary to insure effective dissimilar metal insulation. Vinyl tape will insure positive separation of dissimilar metals, but edges will still have to be sealed to prevent entrance of moisture between mating surfaces at all points where repairs are made.
Xunhong et al.  have investigated friction stir butt-welded AZ31 magnesium alloy plates 4 mm thick and reported that tensile strength of the joint attained 93% that of the base metal and the fractured loion was heat effected zone. Afrin et al. 
Chen TJ, Wang RQ, Ma Y and Hao Y. Effects of processing parameters on microstructure and ultimate tensile strength of thixoformed AM60B magnesium alloy. Materials Research . 2012; 15(4):687-697.
Keywords: Solid Solution, Aging Treatment, Precipitates Mg17Al12 Phase, AZ61 alloy, Mechanical Properties. 1. Introduction Magnesium alloys recently have become one of the widely used commercial alloys due to their high strength to weight ratio which
Glyceregia, a etchant for stainless steels, was not suitable for this grade, Figure 20.4b, as it appears to be rather orientation sensitive. Many electrolytic etchants have been used for etching stainless steels, but only a few have selective characteristics.
mm-thick extruded sheet of Mg-6Al-2Ca alloy at a welding speed of 10 m/min using a 3-kW ﬁber laser, and obtained the tensile strength of welded joints reaching about 84 to 88 pct of that of the base metal (BM). Liu et al. also performed welding of an
Microstructural Characteristics of High Rate Plastic Deformation in Elektron WE43 Magnesium Alloy by Joseph Hamilton, Sarah T. Brennan, Yongho Sohn, Bruce Davis, Rick DeLorme, and Kyu Cho ARL-RP-363 April 2012 A reprint from the Proceedings of the TMS …
AMS 2768 (Heat Treatment of Magnesium Alloy Castings) are often referenced for specific treatment details. Solution Heat Treating Solution heat treatment of magnesium alloys results in high tensile strength and maximum ductility. Magnesium alloys
What is 5052? International Alloy Designation System (IADS) – Designation for wrought aluminum alloys – First digit is the major alloying element – Third and fourth digit is only important for 1XXX series Properties of 5052 Stronger than 1XXX and 3XXX series aluminum.
Meanwhile, the yield strength of as-cast Mg-Zn-Y-Zr alloy could reach up to 450 MPa at room temperature depending on the volume fraction of I-phase 15. Thus, the I-phase strengthened Mg-Zn-Y-(Zr) alloys have superior mechanical properties and could meet the mechanical requirements of structural components in automobile and aerospace industries.
benefits of high strength and lightweight as well as good corrosion resistant due to the presence of aluminum. Magnesium alloy MMCs are reinforced by various ceramics particle, metals and carbon nano-tubes. Ceramics particle such as SiC, Al
The 7046-T4 Al-Zn-Mg alloy has been chosen for this study because its low corrosion susceptibility allows hydrogen erittlement (HE) to be more easily distinguished during SCC tests. Tensile stress tests have been carried out at a strain rate of 10-3 s-1 on tensile samples after an exposure at their corrosion potential in a 0.6M chloride solution for 165 hours under an imposed loading of 80
made to simultaneously increase tensile strength and ductil-ity of AZ31/AZ91 hybrid magnesium alloy with TiC or any othercarbidenanoparticles,usingahigh-volumeproduction spray-deposition-based solidiﬁion processing technique. Accordingly, one of the