Mechanical and damping properties of equal channel angular extrusion-processed Mg–Ca alloys

Motoyama, Takane; Watanabe, Hiroyuki; Ikeo, Naoko; Mukai, Toshiji

doi:10.1016/j.matlet.2017.04.152

Cited by 16 publications

(6 citation statements)

References 19 publications

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“…いものには，Ca などを添加したマグネシウム合金 8) , [14][15][16] や，マグネシウムにリン酸カルシウムを分散／被覆させた材料 11,17) がある．リン酸カルシウムを分散させた複合材料の場合，分散物の体積率などを変化させることによって生体内分解速度が調整できると予想される Fig. 5 Variation of loss factor with strain amplitude in Mg-1Ca-10 vol％HAp composite, pure magnesium processed by powder metallurgy route 23) and Mg-10 vol％HAp composite 23) .…”

Section: リン酸カルシウムの一種である水酸アパタイト (以下，Hapunclassified

Hydroxyapatite Dispersed Magnesium-Based Composite Produced from Pulverized Magnesium Alloy Powder and Its Mechanical Properties

Watanabe

Motoyama

Ikeo

et al. 2018

J. Japan Inst. Metals and Materials

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A magnesium matrix composite made of Mg-1mass％Ca and 10 vol％ hydroxyapatite (HAp) particles was synthesized. The alloy powder was processed by pulverization of the small blocks of the alloy ingot using a high-speed blade grinder. Unreacted composite was successfully produced by extruding the two component powders at a temperature of 538 K. In the extruded composites, the grains of the magnesium matrix were equiaxed and the matrix grain size was 3.9 µm. As for the HAp particles, both thin clustering and severe agglomeration with the size of ~30 µm were observed. The Young＇s modulus, tensile yield strength and tensile strength of the extruded composite were 39 GPa, 101 MPa and 153 MPa, respectively. The damping capacity of the composite was higher than that of extruded magnesium. The composite also showed good forgeability at a temperature of 523 K. However, quite high impurity contents of Fe (0.130 mass％) and Ni (0.010 mass％) were introduced in the magnesium matrix of the composite, probably as a result of contamination that accumulates during the processing (pulverization) of the alloy powder.

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Section: リン酸カルシウムの一種である水酸アパタイト (以下，Hapunclassified

Hydroxyapatite Dispersed Magnesium-Based Composite Produced from Pulverized Magnesium Alloy Powder and Its Mechanical Properties

Watanabe

Motoyama

Ikeo

et al. 2018

J. Japan Inst. Metals and Materials

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“…Therefore, further cold rolling leads to premature failure and complex processing routes need to be applied. Extrusion [6,7], asymmetric/cross rolling [8][9][10], and microstructure optimisation with grain refinement [11][12][13] have been successfully used in previous research to modify the texture. Intrinsic alloy development approaches with the addition of alloying elements have also been established.…”

Section: Introductionmentioning

confidence: 99%

Effect of Lean Alloyed Al and Ca on the Texture Development of Cold Rolled Mg Sheets

Delis

Berners

Korte‐Kerzel

et al. 2023

Metals

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Lean alloyed Mg-Al-Ca alloys reveal weakened basal-type texture intensities and increased room-temperature ductility when compared to pure Mg. Since the combined effects of the alloying elements Al and Ca on texture evolution are not yet fully understood, in this study, two binary and seven ternary Mg-Al-Ca alloys (ranging between 0–2 wt.-% Al and 0–0.5 wt.-% Ca) were subjected to cold rolling with texture measurement after each rolling step. These measurements showed that the basal-type texture of Mg is weakened by the addition of Ca, while the addition of Al leads to stronger basal-type textures compared to the samples containing Ca. The joint effect of Al and Ca can, for specific alloy compositions, lead to a steady-state basal texture intensity, which does not become stronger with further rolling. We expect that the solubility limit of Ca in Mg affects this behaviour. For comparison, mechanical properties were obtained by compression testing, showing high degrees of deformation, of 15–25%.

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“…Magnesium (Mg) alloys are widely used as potential lightweight structure materials in various fields due to their considerable specific strength, specific stiffness, damping capacity, and thermal conductivity [1][2][3][4][5]. Although the casting method is the most common method for preparing Mg alloys, the prepared alloys generally contain some defects, such as shrinkage porosity, chemical composition heterogeneity, and coarse grains [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of sintering temperature on microstructures and mechanical properties of ZK60 magnesium alloys

Jin

et al. 2022

Mater. Res. Express

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In this study, ZK60 Mg alloys were prepared via hot-press sintering under a constant pressure of 30 MPa as well as Ar atmosphere. The sintering temperature was determined to be in the range of 450–600 °C with an interval of 50 °C. The effect of sintering temperature on the microstructures and mechanical properties of the alloys was investigated. All the four sintered alloys mainly exhibited an α-Mg-phase structure and equiaxed grain microstructure. However, a specific amount of melt, enriched in Zn element, formed when the sintering temperature reached 500 °C. Thus, only the alloy sintered at 450 °C maintained the nominal composition of the alloy powder, and exhibited the favorable yield strength and hardness, which was 135.1 MPa and 57 HV, respectively. The alloys sintered at 550 °C and 600 °C exhibited a reduced yield strength and hardness due to the loss of Zn element.

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Mechanical and damping properties of equal channel angular extrusion-processed Mg–Ca alloys

Cited by 16 publications

References 19 publications

Hydroxyapatite Dispersed Magnesium-Based Composite Produced from Pulverized Magnesium Alloy Powder and Its Mechanical Properties

Hydroxyapatite Dispersed Magnesium-Based Composite Produced from Pulverized Magnesium Alloy Powder and Its Mechanical Properties

Effect of Lean Alloyed Al and Ca on the Texture Development of Cold Rolled Mg Sheets

Effect of sintering temperature on microstructures and mechanical properties of ZK60 magnesium alloys

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