Investigation of shear and tensile mechanical properties of ZK60 Mg alloy sheet processed by rolling and sheet extrusion

Sabbaghian, M.; Fakhar, N.; Nagy, Péter; Fekete, Klaudia; Gubicza, Jenő

doi:10.1016/j.msea.2021.142098

Cited by 19 publications

(4 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the misorientation angle distribution histograms (see Figure 4 d–f), the fraction of HAGBs ( θ > 15˚) was more than 90% for all three alloys. In addition, the presence of a sharp peak at 30˚ indicated the occurrence of continuous DRX (CDRX) [ 25 ]. Thus, it is suggested that the fine grains in the extruded samples formed due to recrystallization.…”

Section: Resultsmentioning

confidence: 99%

“…Regarding the ductility, the reduced elongation to failure values for ZK60–2Y and ZK60–2RE alloys compared to the initial alloy was basically caused by the reduced grain size, since for smaller grains, the saturation of the dislocation density usually occurs earlier [ 22 , 29 ]. In addition, an increased amount of precipitates at grain boundaries can cause easier crack nucleation and propagation since these particles may act as stress concentration sites under loading [ 25 , 27 ]. The significance of the weakening effect of precipitates on grain boundary strength was more pronounced in the present ZK60–2Y and ZK60–2RE samples, in which, due to the small grain size, the applied loads were higher than that for the ZK60 alloy.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Modification of the Tensile Performance of an Extruded ZK60 Magnesium Alloy with the Addition of Rare Earth Elements

et al. 2023

View full text Add to dashboard Cite

The influence of rare earth (RE) elements on the microstructure and mechanical performance of an extruded ZK60 Mg alloy was studied. Two types of RE elements were added to a ZK60 material and then extruded at a ratio of 18:1. The first new alloy contained 2 wt% Y while the second one was produced using 2 wt% Ce-rich mischmetal. The microstructure, the texture, and the dislocation density in a base ZK60 alloy and two materials with RE additives were studied by scanning electron microscopy, electron backscattered diffraction, and X-ray line profile analysis, respectively. It was found that the addition of RE elements caused a finer grain size, the formation of new precipitates, and changes in the initial fiber texture. As a consequence, Y and Ce-rich RE elements increased the strength and reduced the ductility. The addition of these two types of RE elements to the ZK60 alloy decreased the work hardening capacity and the hardening exponent mainly due to grain refinement.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Modification of the Tensile Performance of an Extruded ZK60 Magnesium Alloy with the Addition of Rare Earth Elements

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The effects of 5%, 10%, and 15% SiC additions on pure magnesium were examined in a recent work by Labib et al [ 23 ], and it was shown that Mg-15% SiC showed better wear resistance at all test temperatures. Although the tensile, ultimate tensile strength, shear strength, and tensile elongation to failure of wrought ZK60 alloy improved after extrusion, deformability in the shear punch test was observed to be unchanged [ 24 ]. Another recent study, Banijamali et al [ 25 ], revealed that adding 3 wt percent Y to the base ZK60 alloy increases hardness and wear resistance due to the presence of Y-containing precipitates.…”

Section: Introductionmentioning

confidence: 99%

Dry Wear Behaviour of the New ZK60/AlN/SiC Particle Reinforced Composites

et al. 2022

View full text Add to dashboard Cite

This study deals with the microstructure, mechanical, and wear properties of the extruded ZK60 matrix composites strengthened with 45 µm, 15% silicon carbide particle (SiC) and 760 nm, 0.2–0.5% aluminium nitride (AlN) nanoparticle reinforcements. First, the reinforcement elements of the composites, SiC and AlN mixtures were prepared in master-magnesium powder, and compacts were formed under 450 MPa pressure and then sintered. Second, the compacted reinforcing elements were placed into the ZK60 alloy matrix at the semi-solid melt temperature, and the melt was mixed by mechanical mixing. After the melts were mixed for 30 min and a homogeneous mixture was formed, the mixtures were poured into metal moulds and composite samples were obtained. After being homogenized for 24 h at 400 °C, the alloys were extruded with a 16:1 deformation ratio at 310 °C and a ram speed of 0.3 mm/s to create final composite samples. After microstructure characterization and hardness analysis, the dry friction behavior of all composite samples was investigated. Depending on the percentage ratios of SIC and AlN reinforcement elements in the matrix, it was seen that the compressive strength and hardness of the composites increased, and the friction coefficient decreased. While the wear rate of the unreinforced ZK60 alloy was 3.89 × 10−5 g/m, this value decreased by 26.2 percent to 2.87 × 10−5 g/m in the 0.5% AlN + 15% SiC reinforced ZK 60 alloy.

show abstract

“…However, their inherent hexagonal close-packed (HCP) structure would restrict the number of activated slip systems at room temperature (RT) [5,6]. In addition, as one of the most important products of wrought Mg alloys, the sheets prepared by extrusion and rolling always exhibit a strong basal texture [7][8][9]. These factors result in the low formability of Mg alloy sheets at RT, which greatly limits the wide industrial application of Mg alloys [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Unusual Spreading of Strain Neutral Layer in AZ31 Magnesium Alloy Sheet during Bending

Liu

Bai

et al. 2022

Materials

View full text Add to dashboard Cite

In this work, we reported an unusual phenomenon of strain neutral layer (SNL) spreading in an as-rolled AZ31B magnesium alloy sheet during V-bending. The SNL on the middle symmetrical surface perpendicular to the transverse direction (TD) of the sheet extended to the compression region and was accompanied by a mound-like feature. However, the SNL on the side surface perpendicular to the TD was distributed with a parallel band feature. The underlying mechanism was revealed by the finite element (FE) analysis. The results indicate that the three-dimensional compressive stresses in the compression region of the bending samples were responsible for the above phenomenon. Moreover, the area of the SNL in the middle position gradually decreased as the bending test progressed. The findings in this study provide some new insights into the bending deformation behavior of magnesium alloy.

show abstract

Investigation of shear and tensile mechanical properties of ZK60 Mg alloy sheet processed by rolling and sheet extrusion

Cited by 19 publications

References 62 publications

Modification of the Tensile Performance of an Extruded ZK60 Magnesium Alloy with the Addition of Rare Earth Elements

Modification of the Tensile Performance of an Extruded ZK60 Magnesium Alloy with the Addition of Rare Earth Elements

Dry Wear Behaviour of the New ZK60/AlN/SiC Particle Reinforced Composites

Unusual Spreading of Strain Neutral Layer in AZ31 Magnesium Alloy Sheet during Bending

Contact Info

Product

Resources

About