Microstructure and Mechanical Properties of High Shear Material Deposition of Rare Earth Magnesium Alloys WE43

McClelland, Z.; Avery, D. Z.; Williams, M. B.; Mason, C. J. T.; Rivera, O.G.; Leah, C.; Allison, P. G.; Jordon, J.B.; Martens, R. L.; Hardwick, Nanci

doi:10.1007/978-3-030-05789-3_41

Cited by 8 publications

(8 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The only very slight apparent increase in hardness of the deposited material with increasing distance from the deposit-substrate interface agrees very well with a similar findings in Refs. [9,23]. Although those works studied different material systems (2219 Al-based and WE43 Mg-based alloys, respectively), they observed only a slight increase in hardness with respect to build height (analogous to distance from the interface).…”

Section: Discussionmentioning

confidence: 98%

See 1 more Smart Citation

Microstructure Development in Additive Friction Stir-Deposited Cu

Priedeman

Phillips

Lopez

et al. 2020

Metals

View full text Add to dashboard Cite

This work details the additive friction stir-deposition (AFS-D) of copper and evaluation of its microstructure evolution and hardness. During deposition, a surface oxide is formed on the deposit exterior. A very fine porosity is formed at the substrate–deposit interface. The deposit (four layers of 1 mm nominal height) is otherwise fully dense. The grains appear to have recrystallized throughout the deposit with varying levels of refinement. The prevalence of twinning was found to be dependent upon the grain size, with larger local grain sizes having a higher number of twins. Vickers hardness measurements reveal that the deposit is softer than the starting feedstock. This result indicates that grain refinement and/or higher twin densities do not replace work hardening contributions to strengthen Cu processed by additive friction stir-deposition.

show abstract

Section: Discussionmentioning

confidence: 98%

“…Finally, in the Mg-based WE43 alloy, grain refinement is also observed. Here, AFS-D produces the second strongest condition when compared to three different heat treatments of WE43 [23].…”

Section: Introductionmentioning

confidence: 90%

Microstructure Development in Additive Friction Stir-Deposited Cu

Priedeman

Phillips

Lopez

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…This phenomenon of hot-cracking ultimately makes aluminum alloys generally difficult to additively manufacture with fusion-based approaches [1,4]. However, advances in solid-state additive technologies, like additive friction stir-deposition (AFS-D) [5][6][7][8][9][10][11], show promise in producing fully dense builds with wrought-like mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…As such, the AFS-D process avoids the common deleterious effects that occur in fusion-based AM processes such as hot cracking, porosity, and columnar grain structures without the need for secondary densification post-processing. In the AFS-D process, the feed rod is pushed through a rotating hollow cylindrical tool against a rigid substrate, which induces high-shear and severe plastic deformation on the feed rod, leading to metallurgical bonding [8,[10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermomechanical Processing on Fatigue Behavior in Solid-State Additive Manufacturing of Al-Mg-Si Alloy

Rutherford

Avery

Phillips

et al. 2020

Metals

View full text Add to dashboard Cite

This work presents, for the first time, an in-depth investigation of the structure–property–fatigue relationships of an Al-Mg-Si alloy (AA6061) processed via additive friction stir-deposition (AFS-D). As industry focus continues to shift for more efficient and lightweight structures, quantitative studies on the cyclic performance of additively manufactured materials are needed. In this study, the AFS-D processed AA6061-T6 was machined into specimens in two orthogonal orientations and subjected to monotonic and strain-controlled fatigue testing. The microstructural features of as-deposited AA6061 exhibited evidence of dynamic recrystallization and grain refinement. In addition, significant reduction in the intermetallic particles was observed after AFS-D processing. The fatigue results demonstrate that the as-deposited material, particularly the longitudinal direction, exhibited similar fatigue performance to wrought AA6061-T6 in both low-cycle and high-cycle fatigue regimes, which is a promising result for additively manufactured material in the as-deposited condition. By contrast, the as-deposited build direction orientation possessed slightly lower fatigue resistance than the wrought feedstock material. The AFS-D material was observed to exhibit different damage mechanisms from porosity-based damage mechanisms observed in fusion-based additively manufactured materials. Lastly, a microstructure-sensitive fatigue model was employed to capture the fatigue effects of the AFS-D processing on the AA6061.

show abstract

“…That alloy is usually processed by casting and exhibits various defects like shrinkage porosity and cracks [11][12][13][14]. Due to the cracks susceptibility of WE43 alloy, the conventional high heat input deposition techniques are not suitable for the repair of the WE43 components [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effect of ElectroSpark Process Parameters on the WE43 Magnesium Alloy Deposition Quality

2019

View full text Add to dashboard Cite

This research aims to investigate the effects of process parameters on the quality of WE43 coatings deposited on homologue substrate by ElectroSpark Deposition (ESD) technology. ESD is new technology used to apply coatings or for the restoration and refurbishment of worn or damaged high valued parts. The depositions were processed using five different levels of Energy input (Es, Spark Energy). The microstructure of both the base material and deposits cross-section were characterized by optical and scanning electron microscopies. Also, X-ray diffraction technique was used. In addition, stereological studies of the through-thickness heterogeneities of the deposits (e.g., voids) were performed. The mechanical properties were evaluated by Vickers micro-hardness. The results show that the deposits exhibited a fine grained microstructure due to the rapid solidification. The average micro-hardness values of the deposits are lower than that of the substrate and distributed in a small range (49-60 HV). The lower hardness of the deposits respect to the base material is due to the presence of defectiveness such as spherical, laminar and random shaped voids. The defects area percentage inside the deposits remains well below than 11%. All the deposits were mainly affected by laminar morphology defects. The results indicate that the deposits defectiveness decreases as the energy input increases.

show abstract

Microstructure and Mechanical Properties of High Shear Material Deposition of Rare Earth Magnesium Alloys WE43

Cited by 8 publications

References 22 publications

Microstructure Development in Additive Friction Stir-Deposited Cu

Microstructure Development in Additive Friction Stir-Deposited Cu

Effect of Thermomechanical Processing on Fatigue Behavior in Solid-State Additive Manufacturing of Al-Mg-Si Alloy

Effect of ElectroSpark Process Parameters on the WE43 Magnesium Alloy Deposition Quality

Contact Info

Product

Resources

About