Towards refining microstructures of biodegradable magnesium alloy WE43 by spark plasma sintering

Soderlind, Julie; Cihova, Martina; Schäublin, R.; Risbud, Subhash H.; Löffler, Jörg F.

doi:10.1016/j.actbio.2019.06.045

Cited by 42 publications

(21 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This phenomenon can be observed for magnesium alloys with the addition of RE elements. Furthermore, the addition of these elements increases the grain refinement, thus, mutually reinforcing both effects 70,71 . Based on the micro‐, macrostructural, and corrosion investigations, Batches A and B were selected for the fatigue investigations, as the greatest differences were assumed.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the addition of these elements increases the grain refinement, thus, mutually reinforcing both effects. 70,71 Based on the micro-, macrostructural, and corrosion investigations, Batches A and B were selected for the fatigue investigations, as the greatest differences were assumed. As suspected, the two selected batches show differences in fatigue behavior.…”

Section: Magnesium Implantsmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical in vitro fatigue testing of implant materials and components using advanced characterization techniques

et al. 2021

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Magnesium Implantsmentioning

confidence: 99%

Mechanical in vitro fatigue testing of implant materials and components using advanced characterization techniques

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Nevertheless, Qin et al argue that this is not expected to be a major effect for magnesium alloys [45]. Moreover, fine-grained microstructures are described as bringing higher corrosion resistance to magnesium systems, since the finer grains would be prone to produce more uniform corrosion products, a denser passivation layer and, ultimately, slow and homogeneous corrosion [44,46,47].…”

Section: Discussionmentioning

confidence: 99%

Corrosion and Corrosion Fatigue Properties of Additively Manufactured Magnesium Alloy WE43 in Comparison to Titanium Alloy Ti-6Al-4V in Physiological Environment

et al. 2019

View full text Add to dashboard Cite

Laser powder bed fusion (L-PBF) of metals enables the manufacturing of highly complex geometries which opens new application fields in the medical sector, especially with regard to personalized implants. In comparison to conventional manufacturing techniques, L-PBF causes different microstructures, and thus, new challenges arise. The main objective of this work is to investigate the influence of different manufacturing parameters of the L-PBF process on the microstructure, process-induced porosity, as well as corrosion fatigue properties of the magnesium alloy WE43 and as a reference on the titanium alloy Ti-6Al-4V. In particular, the investigated magnesium alloy WE43 showed a strong process parameter dependence in terms of porosity (size and distribution), microstructure, corrosion rates, and corrosion fatigue properties. Cyclic tests with increased test duration caused an especially high decrease in fatigue strength for magnesium alloy WE43. It can be demonstrated that, due to high process-induced surface roughness, which supports locally intensified corrosion, multiple crack initiation sites are present, which is one of the main reasons for the drastic decrease in fatigue strength.

show abstract

“…Therefore, these alloys are generally used for high temperature applications in the aerospace and automotive industries. Moreover, these alloys are often investigated because of their potential applications in medicine, e.g., as a resorbable biomaterial [10,11]. Interest in the utilization of powder metallurgy for these alloys has been continuously growing with respect to new applications and advances in the powder metallurgy techniques [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, these alloys are often investigated because of their potential applications in medicine, e.g., as a resorbable biomaterial [10,11]. Interest in the utilization of powder metallurgy for these alloys has been continuously growing with respect to new applications and advances in the powder metallurgy techniques [11][12][13]. The Mg-4Y-3Nd (WN43) alloy used in this study belongs to the Mg-RE alloy system, but instead of using RE mischmetal (E), pure neodymium (N) was selected for better control of the composition and secondary phases.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Strength of Attritor-Milled and Spark Plasma Sintered Mg-4Y-3Nd Alloy

et al. 2020

View full text Add to dashboard Cite

Gas-atomized powder of an Mg-4Y-3Nd magnesium alloy was attritor-milled at room temperature in an argon atmosphere for two time periods—1.5 and 5 h. Subsequently, the gas-atomized powder as well as both of the milled powders were spark plasma sintered at four temperatures, 400, 450, 500, and 550 °C, for 3 min. The effect of the milling on the powder particles’ morphology and the microstructure of the consolidated samples were studied by advanced microscopy techniques. The effect of the microstructural changes, resulting from the pre-milling and the sintering temperature, on the mechanical strength was investigated in compression along and perpendicular to the sintering load direction. Both the compression yield strength and ultimate compression strength were significantly affected by the grain size refinement, residual strain, secondary phase particles, and porosity. The results showed that attritor-milling imposed severe deformation to the powder particles, causing a significant grain size refinement in all of the consolidated samples. However, 1.5 h of milling was insufficient to achieve uniform refinement, and these samples also exhibited a distinctive anisotropy in the mechanical properties. Only a negligible anisotropy and superior yield strength were observed in the samples sintered from 5 h milled powder, whereas the ultimate strength was lower than that of the samples sintered from the gas-atomized powder.

show abstract

Towards refining microstructures of biodegradable magnesium alloy WE43 by spark plasma sintering

Cited by 42 publications

References 57 publications

Mechanical in vitro fatigue testing of implant materials and components using advanced characterization techniques

Mechanical in vitro fatigue testing of implant materials and components using advanced characterization techniques

Corrosion and Corrosion Fatigue Properties of Additively Manufactured Magnesium Alloy WE43 in Comparison to Titanium Alloy Ti-6Al-4V in Physiological Environment

Microstructure and Mechanical Strength of Attritor-Milled and Spark Plasma Sintered Mg-4Y-3Nd Alloy

Contact Info

Product

Resources

About