2012-8-6 · Key words: AM60B magnesium alloy; grain refinement; MgCO3 1 Introduction Magnesium alloys, as the lightest metallic structural materials, are receiving increased attention in the fields of automobile and aircraft industries due to their low density and high specific strength. However, for the most commonly-used magnesium alloys, such as AM60,
2020-1-27 · Different amounts of Al-5 Ti-1 B master alloy (TiBAl) were added to the AZ 31 magnesium alloy (Mg-3 Al-1 Zn-0.2 Mn) as grain refiner and the resulting microstructure and grain size distributions were studied after extrusion and equal channel angular pressing (ECAP).Results showed that the addition of 0.6% TiBAl had the strongest grain refinement effect, reducing the grain sizes by 54.5 and …
2017-12-14 · The ASTM Standard Alloy Designation System is widely used by the industry. Details of the ASTM system are given in Table 1 (Ref 2, 4). As an example of how this alphanumeric system works, consider magnesium alloy AZ91E-T6. The first part of the designation, AZ, signifies that aluminum and zinc are the two principal al-loying elements.
2019-10-11 · 1 Recent Advances in Grain Refinement of Light Metals and Alloys M.A. Easton1a,*, M. Qian1b, A. Prasad2c, D.H. StJohn2d 1 RMIT University, School of Aerospace, Mechanical and Manufacturing Engineering, GPO Box 2476, Melbourne, VIC 3001, Australia 2 Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, …
Chips were prepared by machining commercially pure magnesium and a magnesium alloy AZ91 separately. Optical microscopy and microhardness measurements showed good consolidation of pure magnesium. The magnesium alloy continued to exhibit the boundaries between the chips even after 5 turns of HPT suggesting poor bonding.
2020-6-22 · The EBSD inverse pole figure (IPF) map overlaid by large angle grain boundaries with misorientation angles larger than 15 degrees in Fig. 4(a) shows the microstructure of ZAXME11100 alloy …
28. Grain refinement in the surface layer of AZ31 Mg alloy sheet processed by cyclic bending, Reviews on Advanced Materials Science. 33 (2013) 153-156. （SCI） 29. Anisotropy in the mechanical properties of AZ31 magnesium alloy after being compressed at
2016-2-17 · Friction stir processing, Magnesium alloys, severe plastic deformation, grain size refinement, Superplasticity. Abstract. The effect of friction stir processing (FSP), on the microstructure and mechanical properties of a magnesium alloy AZ61 has been analyzed. This is a widely used wrought
2020-8-22 · Ma, Y.Q. Zhao, Y.N. Wang, Grain refinement and mechanical properties improvement of AZ31 Mg alloy sheet obtained by two-stage rolling, Materials Science and Engineering A, …
Addition of Al—Be master alloy to a Mg—Zr alloy reduces melt oxidation, however, it has a detrimental grain coarsening effect that is believed to be caused by an unknown interaction of Be with the Zr nucleant particles. However, this study found that Al is the major cause of grain coarsening. By analysis of intermetallic phases and chemical analysis for solute Zr, it was revealed that Al
2020-6-3 · Wu (), G. Y. Sha, Y. D. Zhang, and C. Esling, Grain refinement of an Al-Cu-Mg alloy through coination of microalloying and common thermo-mechanical treatment and its superplasticity, Materials Science Forum, 546-549 (2007), 917-922; (SCI)
2019-8-10 · In the magnesium alloy sheets extruded by CVCDE using two interim dies, there were obvious triple grain boundaries, low disloion density in the crystal and the weaker basal texture. Through the joint effect of grain refinement and texture evolution, the magnesium alloy sheets extruded by CVCDE using two interim dies had lower YS and UTS, and the EI increased by 18% compared …
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
2020-3-27 · dynamic recrystallization, and grain refinement can be . achieved relatively easily.  Therefore, we started the R&D by investigating the grain refinement behavior by dynamic recrystallization of the magnesium alloy continuous cast bars. 3.2 Investigation of the dynamic recrystallization behavior of magnesium alloy continuous cast bars
2020-8-20 · rare-earth containing magnesium alloy. J Ultrafine Grained Nanostruct Mater, 2017; 50(2):132-136. The effects of rare earth addition and hot extrusion process on the grain refinement of magnesium alloy were studied. The as-cast Mg-6Al-1Zn (AZ61) alloy had the average grain size of ~ 64 µm and its micro-structure consisted of α-Mg and Mg 17 Al
Even in a magnesium alloy with added calcium, although the mechanism of the grain refinement acts in the same way as in a AZ series magnesium alloy [6, 7, 21], it is likely that, in the refining of magnesium grains, different factors act in the regions with the total reduction ratio greater than or less than 42%. The intermetallic compound
The grain refinement of Ce in the as-cast and rolled AZ31 alloy were studied by using Polyvar-MET optical microscope with a VSM2000 quantitative analysis system, KYKY2000 SEM and Tecnai G2 20 TEM. And the mechanical properties of AZ31+Ce alloy were tested on a CSS 44100 testing system with computerized data acquisition.
2018-4-6 · Magnesium Alloys - Design, Processing and Properties 164 This chapter reviews the current understanding of ultrasonic grain refinement (UGR) of Mg and its alloys and discusses issues that are central to UGR, including the characteristics of UGR of Mg alloys, the dependence of UGR on so lute or alloy chemistry, the attenuation in
2019-1-19 · ABSTRACTPresent work aims to propose a new and novel low heat input stationary shoulder friction stir processing (SSFSP) for grain refinement. It uses stationary shoulder and rotating probe tool, which generates low heat input and small temperature gradient across thickness of material. In this study, SSFSP was performed in 6.35 mm thick AZ31B magnesium alloy without use of external …
Grain refinement behavior of potassium fluozirconate (K2ZrF6) salts mixture introduced into Mg–10Gd–3Y magnesium alloy Journal of Alloys and Compounds 2010 4 2
2020-6-5 · Grain Refining Mechanism of Carbon Inoculation on Mg-Al Alloy: LI Ke ( ), WANG Fei ( ), WANG Qian ( ٻ), ZHOU Nai-geng ( ) (School of Mechatronics Engineering, Nanchang University, Nanchang 330031, China)
Properties and Fracture Behavior of AZ31 Magnesium Alloy, Metallurgical and Materials Transactions A, 37, 4, 2006, 1333-1341. 3． Yingxin Wang, Xiaoqin Zeng and Wenjiang Ding, Effect of Al-4Ti-5B master alloy on the grain refinement of
2014-12-17 · Influence of grain refinement on anisotropy in mechanical 57 P aki s t a n T h e N ucl e u s The Nucleus A Quarterly Scientific Journal of Pakistan Atomic Energy Commission NCLEAM, ISSN 0029-5698 INFLUENCE OF GRAIN REFINEMENT ON ANISOTROPY IN MECHANICAL PROPERTIES IN WROUGHT MAGNESIUM ALLOY AZ80 *M. SHAHZAD, A. H. QURESHI, N. HUSSAIN and L. ALI1
2017-3-2 · Hongge Yan, Jihua Chen, Qiang Guo, Bin Su, and Yuanzhi Wu (2011). Microstructual evolution of AZ80 magnesium alloy during multi-directional compression deformation at elevated temperature. International Journal of Materials Research: Vol. 102, No. 2, pp. 218-226.
 Haitao Zhou, Hot mpression behavior ZK60 magnesium alloy, Materials Forum, 488-489 (2004)563.  H. T. Zhou, Grain refinement of AZ61 magnesium alloy, Magnesium technology (TMS), JOM, v 56, n 11, Noveer, 2004, p99.  Haitao Zhou, A flow
Experiments were conducted on a Mg-9% Al alloy to evaluate the microstructural characteristics and the tensile properties at elevated temperatures after processing by high-pressure torsion (HPT) at room temperature and at 423 K. Ultrafine grain sizes were achieved by processing samples in both an extruded and a cast condition.