The effect of Ca addition on microstructure and mechanical properties of extruded AZ31 alloys

Song, Leipeng; Lü, Yalin; Zhang, Yang; Li, Xingcheng; Cong, Mengqi; Xu, Wenting

doi:10.1016/j.vacuum.2019.108822

Cited by 13 publications

(5 citation statements)

References 34 publications

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“…Comparison of AZT411 alloy in this work with other Mg–Al–Zn–Sn and Mg–Al–Zn‐based alloys (ECAP, [ 28,32–34,55 ] rolling, [ 56–58 ] extruded [ 6,41,59–63 ] ) in studies.…”

Section: Resultsmentioning

confidence: 99%

Tailoring Mechanical Properties of Mg–Al–Zn–Sn–Mn Alloy by Multipass Equal Channel Angular Pressing

et al. 2020

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Herein, the influence of equal channel angular pressing (ECAP) routes, i.e., A and Bc, on the microstructure and texture evolution of a Mg–3.7Al–0.7Zn–0.8Sn–0.4Mn (wt%) alloy is investigated by scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and X‐ray diffraction (XRD). It is found that with increasing the number of ECAP passes, the area fraction of the dynamically precipitated secondary‐phase particles increases, whereas particle size becomes larger. After four and six passes of ECAP via route A, shear deformation induced by ECAP promotes the incline of c‐axes toward extrusion direction (ED). The optimum room temperature (RT) mechanical properties (yield strength of ≈225 MPa, ultimate tensile strength of ≈312 MPa, and elongation to fracture of ≈31.9%) are obtained after four passes of ECAP at 200 °C via route A. The improved strength results from fine dynamic recrystallization (DRX)/ed grains, nanoscale secondary‐phase particles, and basal texture. Herein, it is indicated that Mg–Al–Zn–Sn alloys have great potential as low‐cost high‐strength‐ductility wrought Mg alloys.

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“…Comparison of AZT411 alloy in this work with other Mg–Al–Zn–Sn and Mg–Al–Zn‐based alloys (ECAP, [ 28,32–34,55 ] rolling, [ 56–58 ] extruded [ 6,41,59–63 ] ) in studies.…”

Section: Resultsmentioning

confidence: 99%

Tailoring Mechanical Properties of Mg–Al–Zn–Sn–Mn Alloy by Multipass Equal Channel Angular Pressing

et al. 2020

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“…Aluminum(Al) stands out as the most commonly used alloying element in regard to magnesium. Mg–Al based alloys find application in the development of biodegradable implants owing to their excellent castability, acceptable corrosion resistance, and mechanical properties [ 20 ]. The enhanced corrosion resistance is attributed to the formation of the Mg 17 Al 12 intermetallic compound, which contributes to stabilizing the alloy microstructure [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, manufacturers and researchers need to adhere to these limits to ensure the safety and efficacy of Mg alloy implants for medical use. Interestingly, observations indicate that AZ31, AZ91, and AZ61 alloys displayed an improvement in their corrosion potential values after immersion for 16 and 24 days in SBF, PBS, and NaCl solutions compared to pure Mg [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Biocorrosion and Cytotoxicity Studies on Biodegradable Mg-Based Multicomponent Alloys

Sudha,

Tun,

Pillai

et al. 2024

Bioengineering

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Magnesium-based multicomponent alloys with different compositions, namely Mg60Al20Zn5Cu10Mn5 (Mg60 alloy), Mg70Al15Zn5Cu5Mn5 (Mg70 alloy), and Mg80Al5Cu5Mn5Zn5 (Mg 80) alloys, were prepared using the disintegrated melt deposition technique. The DMD technique is a distinctive method that merges the benefits from gravity die casting and spray forming. This approach facilitates high solidification rates, process yields, and reduced metal wastage, resulting in materials with a fine microstructure and minimal porosity. Their potential as biodegradable materials was assessed through corrosion in different simulated body fluids (SBFs), microstructure, and cytotoxicity tests. It was observed that the Mg60 alloy exhibited low corrosion rates (~× 10−5 mm/year) in all SBF solutions, with a minor amount of corrosive products, and cracks were observed. This can be attributed to the formation of the Mg32(AlZn)49 phase and to its stability due to Mg(OH)2 film, leading to excellent corrosion resistance when compared to the Mg70 and M80 alloys. Conversely, the Mg80 alloy exhibited high corrosion rates, along with more surface degradation and cracks, due to active intermetallic phases, such as Al6Mn, Al2CuMg, and Al2Cu phases. The order of corrosion resistance for the Mg alloy was found to be ASS > HBSS > ABP > PBS. Further, in vitro cytotoxicity studies were carried out using MDA-MB-231 tumor cells. By comparing all three alloys, in terms of proliferation and vitality, the Mg80 alloy emerged as a promising material for implants, with potential antitumor activity.

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“…8 Moreover, Ca addition results in stable secondary phase forming, enabling high-temperature oxidation performance in Mg alloys. 9 Song et al 10 reported that the more refined grains were obtained by adding 1 wt.% Ca to AZ31 Mg alloy was developed efficiently by combined effects of texture and secondary phase strength mechanisms.…”

Section: Introductionmentioning

confidence: 99%

The effect of hot rolling process on macro-texture and high-temperature mechanical properties of AZ31B alloy modified by Ca and Ce

Kara

Demirtaş

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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This study examines the high-temperature tensile properties of AZ31 and AZ31-1.0Ca-0.2Ce alloys in different rolling directions. Tensile test results at 250 °C showed that the ductility of AZ31-1.0Ca-0.2Ce alloy increased threefold in the 90° perpendicular direction to rolling direction. Moreover, both strength and elongation values of AZ31-1.0Ca-0.2Ce alloy were higher than those of AZ31. Macro-texture measurements revealed that AZ31 and AZ31-1.0Ca-0.2Ce alloys showed strong and weakened basal texture in the rolling direction, respectively. The combined effect of secondary phases and texture weakening increased the high-temperature ductility (49%) of AZ31-1.0Ca-0.2Ce. In the rolling direction, yield (YS) and ultimate tensile strength of AZ31-1.0Ca-0.2Ce were obtained as 115 and 121 MPa, respectively. These values were higher than AZ31 alloy due to the stronger texture of the non-basal planes. The fracture surface of AZ31 samples proved that the rough and crack-dominated surface led to brittle fracture formation. However, fine-sized dimples resulted in a ductile fracture in AZ31-1.0Ca-0.2Ce samples.

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The effect of Ca addition on microstructure and mechanical properties of extruded AZ31 alloys

Cited by 13 publications

References 34 publications

Tailoring Mechanical Properties of Mg–Al–Zn–Sn–Mn Alloy by Multipass Equal Channel Angular Pressing

Tailoring Mechanical Properties of Mg–Al–Zn–Sn–Mn Alloy by Multipass Equal Channel Angular Pressing

Biocorrosion and Cytotoxicity Studies on Biodegradable Mg-Based Multicomponent Alloys

The effect of hot rolling process on macro-texture and high-temperature mechanical properties of AZ31B alloy modified by Ca and Ce

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