Achieving extraordinary structural efficiency in a wrought magnesium rare earth alloy

Panigrahi, S. K.; Mishra, Rajiv S.; Brennan, R. C.; Cho, K.

doi:10.1080/21663831.2020.1719227

Cited by 28 publications

(6 citation statements)

References 52 publications

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“…In recent years, a number of researchers [133][134][135][136][137][138][139] that produced Mg alloys used the Powder Metallurgy process route. This process is usually followed by extrusion to form the final alloy.…”

Section: Powder Metallurgymentioning

confidence: 99%

Magnesium for Implants: A Review on the Effect of Alloying Elements on Biocompatibility and Properties

et al. 2022

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An attempt is made to cover the whole of the topic of biodegradable magnesium (Mg) alloys with a focus on the biocompatibility of the individual alloying elements, as well as shed light on the degradation characteristics, microstructure, and mechanical properties of most binary alloys. Some of the various work processes carried out by researchers to achieve the alloys and their surface modifications have been highlighted. Additionally, a brief look into the literature on magnesium composites as also been included towards the end, to provide a more complete picture of the topic. In most cases, the chronological order of events has not been particularly followed, and instead, this work is concentrated on compiling and presenting an update of the work carried out on the topic of biodegradable magnesium alloys from the recent literature available to us.

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Section: Powder Metallurgymentioning

confidence: 99%

Magnesium for Implants: A Review on the Effect of Alloying Elements on Biocompatibility and Properties

et al. 2022

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“…At this stage, only a limited number of alloy systems or matrix elements have been explored for AFSD. Recent results on friction stir processing of Mg [82,83] and Ti [84,85] alloys point to the ability of intense shear deformation processes to obtain strength-ductility combinations that are not possible through conventional thermomechanical processing routes. There is a very rich possibility of employing the 'far-from-equilibrium' AFSD process to reach unexplored regions for bodycentered cubic elements and alloys.…”

Section: On the Microscopic Levelmentioning

confidence: 99%

Additive friction stir deposition: a deformation processing route to metal additive manufacturing

Mishra

2020

Materials Research Letters

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134

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As the forging counterpart of fusion-based additive processes, additive friction stir deposition offers a solid-state deformation processing route to metal additive manufacturing, in which every voxel of the feed material undergoes severe plastic deformation at elevated temperatures. In this perspective article, we outline its key advantages, e.g. rendering fully-dense material in the as-printed state with fine, equiaxed microstructures, identify its niche engineering uses, and point out future research needs in process physics and materials innovation. We argue that additive friction stir deposition will evolve into a major additive manufacturing solution for industries that require high load-bearing capacity with minimal post-processing. IMPACT STATEMENT This paper delineates additive friction stir deposition, which offers a solid-state deformation processing route to metal additive manufacturing and renders fully-dense material with fine, equiaxed microstructures in the as-printed state.

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“…As a result, significant grain refinement is achieved, and the mechanical properties are improved greatly. According to our survey, reports [ 22 , 23 , 24 , 25 , 26 , 27 , 28 ] about the superplasticity of magnesium alloys were documented because of the grain refinement by FSP. Table 2 summarizes the grain refinement and superplasticity of magnesium alloys processed by FSP, indicative of researcher interest.…”

Section: Introductionmentioning

confidence: 99%

Room Temperature Strengthening and High-Temperature Superplasticity of Mg-Li-Al-Sr-Y Alloy Fabricated by Asymmetric Rolling and Friction Stir Processing

et al. 2023

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Magnesium-lithium alloy is the lightest alloy to date. To explore its room temperature strength and high-temperature ductility, a plate of a new fine-grained Mg-9.13Li-3.74Al-0.31Sr-0.11Y alloy was fabricated by asymmetric rolling, and the rolled plate was subjected to friction stir processing (FSP). The microstructure and mechanical properties at room and elevated temperatures were investigated by optical microscopy, X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), and tensile tester. Grain refinement with an average grain size in the α-Mg phase of 1.65 μm and an average grain size in the β-Li phase of 4.24 μm was achieved in the water-cooled FSP alloy. For room temperature behavior, the ultimate tensile strength of 208 ± 4 MPa, yield strength of 193 ± 2 MPa, and elongation of 48.2% were obtained in the water-cooled FSP alloy. XRD and EDS analyses revealed that the present alloy consists of α-Mg and β-Li phases, Al2Y, Al4Sr, MgLi2Al, and AlLi intermetallic compounds. For high-temperature behavior, the maximum superplasticity or ductility of 416% was demonstrated in this fine-grained alloy with an average grain size of 10 μm at 573 K and 1.67 × 10−3 s−1. A power-law constitutive equation was established. The stress exponent was 2.29 (≈2) (strain rate sensitivity 0.44), and the deformation activation energy was 162.02 kJ/mol. This evidence confirmed that the dominant deformation mechanism at elevated temperatures is grain boundary and interphase boundary sliding controlled by lattice diffusion.

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Achieving extraordinary structural efficiency in a wrought magnesium rare earth alloy

Cited by 28 publications

References 52 publications

Magnesium for Implants: A Review on the Effect of Alloying Elements on Biocompatibility and Properties

Magnesium for Implants: A Review on the Effect of Alloying Elements on Biocompatibility and Properties

Additive friction stir deposition: a deformation processing route to metal additive manufacturing

Room Temperature Strengthening and High-Temperature Superplasticity of Mg-Li-Al-Sr-Y Alloy Fabricated by Asymmetric Rolling and Friction Stir Processing

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