Influence of friction stir processing and aging heat treatment on microstructure and mechanical properties of selective laser melted Mg-Gd-Zr alloy

Deng, Qingchen; Wu, Yujuan; Su, Ning; Chang, Zhiyu; Chen, Juan; Peng, Liming; Ding, Wei

doi:10.1016/j.addma.2021.102036

Cited by 15 publications

(10 citation statements)

References 40 publications

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“…Apart from process parameters, post treatment process is another common way to adjust grain characteristics [39, 65,84,89,99]. Cheng et al indicated that arc oscillation (including spiral oscillation and asymmetric trapezoid oscillation) was helpful to refine the microstructure of the WAAMprocessed AZ31 alloy [89].…”

Section: Microstructure Characteristicsmentioning

confidence: 99%

“…In addition, grain growth during high temperature process inevitably results in strength reduction according to Hall-Petch relation. In order to address this issue, Deng et al introduced FSP to alter the grain characteristics of the LPBFprocessed G10K (Mg-10Gd-0.2Zr) alloy [65]. It is evident from figure 13 that the original columnar grains in the asbuilt state (figure 13(a)) were changed to the equiaxed grains in the FSP state (figure 13(c)) and the grain size was significantly decreased from 26.8 µm (figure 13(b)) to 5.8 µm (figure 13(d)).…”

Section: Microstructure Characteristicsmentioning

confidence: 99%

“…FSP is also an effective post treatment approach to ameliorate the mechanical properties of AM-processed Mg alloys. Deng et al demonstrated that the FSP sample exhibited superior combination of UTS and El (271 MPa and 7.5%) to the as-built sample (228 MPa and 2.2%) for LPBF-processed G10K (Mg-10Gd-0.2Zr) alloy [65]. Nevertheless, the applicability of FSP for additively manufactured Mg alloys is not as good as that of post heat treatment process due to difficult process integration of FSP and AM.…”

Section: Room Temperature Tensile Property Strengthening and Ductiliz...mentioning

confidence: 99%

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Additive manufacturing of magnesium and its alloys: process-formability-microstructure-performance relationship and underlying mechanism

Sui,

Guo,

et al. 2023

Int. J. Extrem. Manuf.

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Magnesium and its alloys, as a promising class of materials, is popular in lightweight application and biomedical implants due to their low density and good biocompatibility. Additive manufacturing (AM) of Mg and its alloys is of growing interest in academia and industry. The domain-by-domain localized forming characteristics of AM leads to unique microstructures and performances of AM-processed Mg and its alloys, which are different from those of traditionally manufactured counterparts. However, the intrinsic mechanisms still remain unclear and need to be in-depth explored. Therefore, this work aims to discuss and analyze the possible underlying mechanisms regarding defect appearance and elimination, microstructure formation and evolution, and performance improvement, based on presenting a comprehensive and systematic review on the relationship between process parameters, forming quality, microstructure characteristics and resultant performances. Lastly, some key perspectives requiring focus for further progression are highlighted to promote development of AM-processed Mg and its alloys and accelerate their industrialization.

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Section: Microstructure Characteristicsmentioning

confidence: 99%

Section: Microstructure Characteristicsmentioning

confidence: 99%

Section: Room Temperature Tensile Property Strengthening and Ductiliz...mentioning

confidence: 99%

See 1 more Smart Citation

Additive manufacturing of magnesium and its alloys: process-formability-microstructure-performance relationship and underlying mechanism

Sui,

Guo,

et al. 2023

Int. J. Extrem. Manuf.

View full text Add to dashboard Cite

show abstract

“…The mechanical and corrosion properties of Mg can be improved via alloying and the application of thermomechanical processing routes such as hot extrusion. [6][7][8] In this regard, the activation of additional slip systems by alloying, [9] the fragmentation and dispersion of the eutectic constituents during hot working, [10] modification of texture, [11] and grain refinement by alloying and thermomechanical processing [12,13] are among the main reasons for the improvement of properties and strengthening. It is noteworthy that the hot extrusion process (like hot compression testing) has many variables such as the deformation temperature, [14] strain rate (controlled by ram speed), [15] and extrusion ratio, [16] which could significantly affect the extruded microstructure and the resultant properties.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Corrosion Behavior of Biodegradable Mg–0.5Zr–0.5Ca–xZn Magnesium Alloys

et al. 2023

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Mechanical properties and in vitro corrosion behavior of biodegradable Mg–0.5Zr–0.5Ca–xZn alloys in the simulated body fluid (SBF) solution are investigated. Zinc addition leads to a remarkable grain refinement in the as‐cast condition, as well as the formation of Ca2Mg6Zn3 and Mg7Zn3 compounds. As a result, the lean Mg–0.5Zr–0.5Ca–1Zn alloy shows the best combination of mechanical properties with an ultimate tensile strength (UTS) of 182 MPa, total elongation of 9.5%, and tensile toughness of 13 MJ m−3, which reveals ≈80%, 72%, and 190% improvements compared to those obtained for the Mg–0.5Zr–0.5Ca alloy, respectively. This sample also exhibits improved corrosion behavior, where a decrease in the corrosion current density (iCorr) is recorded via the addition of 1 wt% Zn. However, higher Zn additions result in the formation of a quasi‐continuous eutectic network with the consequent deterioration of tensile properties and increased effect of microgalvanic couples. The extreme grain refinement induced by the dynamic recrystallization (DRX) remarkably improves the overall mechanical properties of the hot extruded alloy but increased the iCorr. Accordingly, the properties of Mg–0.5Zr–0.5Ca alloys can be tailored for biomedical applications via Zn addition and thermomechanical processing.

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“…The ultimate tensile strength and elongation increased from 228 to 272 MPa and 2.2% to 7.5%, respectively, without reducing yield power The authors came to the conclusion that the mechanical characteristics of SLMed alloys may be improved and their microstructure quite well by FSP. 19 Escobar et al used the FSP technique to describe the impact of three passes on an Al-4Si alloy sheet. The authors discovered a regionally heterogeneous link between microstructure and softening process whereas microhardness achieved is 29 ± 1 HV in the stir zone.…”

Section: Introductionmentioning

confidence: 99%

Animal waste powder utilization for Al6061/SiC composite using friction stir processing with scroll shoulder hexagonal tool

Gupta

Singh

Kumar³

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Nowadays, a lot of animal waste is available in the world. To reduce the number of animal waste particles, it is used as reinforcement, reducing the cost of reinforcement without affecting the present qualities. In this research, AA6061 is used because of its lower weight-to-strength ratio whereas to reduce the cost of reinforcement, chicken bone powder (CBP) with varying percentages (2%, 4%, and 6%) and 2% SiC is used. A hexagonal tool with a scroll shoulder is used for the fabrication of AA6061/SiC/CBP hybrid composite. Microstructural analysis, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), fractography analysis, tool analysis, tensile strength, and hardness are used for the analysis of AA6061/SiC/CBP hybrid composite. Microstructural analysis shows that the grain size of SiC and CBP particles is reduced from 40 to 4.6 μm. Homogenous distribution of the reinforcement with no agglomeration is observed in SEM analysis. Fractography shows the presence of dimples and micro-dimples which indicates that tensile strength increases whereas XRD analysis investigates that there are no unwanted contaminants present in the AA6061/SiC/CBP hybrid composite which can be harmful during machining. Tensile strength and hardness of AA6061/SiC/CBP hybrid composite increase up to 29.28% and 18.22%, respectively, on increasing the percentage of chicken bone powder in reinforcement.

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Influence of friction stir processing and aging heat treatment on microstructure and mechanical properties of selective laser melted Mg-Gd-Zr alloy

Cited by 15 publications

References 40 publications

Additive manufacturing of magnesium and its alloys: process-formability-microstructure-performance relationship and underlying mechanism

Additive manufacturing of magnesium and its alloys: process-formability-microstructure-performance relationship and underlying mechanism

Mechanical Properties and Corrosion Behavior of Biodegradable Mg–0.5Zr–0.5Ca–xZn Magnesium Alloys

Animal waste powder utilization for Al6061/SiC composite using friction stir processing with scroll shoulder hexagonal tool

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