Fabrication and Mechanical Properties of Mg&lt;SUB&gt;65&lt;/SUB&gt;Cu&lt;SUB&gt;15&lt;/SUB&gt;Ag&lt;SUB&gt;5&lt;/SUB&gt;Pd&lt;SUB&gt;5&lt;/SUB&gt;Gd&lt;SUB&gt;10&lt;/SUB&gt; Bulk Metallic Glass

Men, Hong; Kim, Dong-Won; Kim, Do Hyang

doi:10.2320/matertrans.44.2141

Cited by 42 publications

(5 citation statements)

References 13 publications

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“…In fact, in the extreme case one could attain amorphous Mg alloys at certain multicomponent compositions under chill-casting (copper mold casting) conditions, forming the so-called bulk metallic glasses (BMGs). [4][5][6][7][8][9][10][11][12][13] The Mg-based BMGs can have a strength higher than all the crystalline Mg-alloys mentioned above. Unfortunately, BMGs plastically deform by the formation of highly localized shear bands that lead to catastrophic failure under unconstrained conditions, without much macroscopic plasticity.…”

Section: Introductionmentioning

confidence: 97%

Microstructure and compressive properties of chill-cast Mg–Al–Ca alloys

Shi

Teng

et al. 2006

J. Mater. Res.

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Mg 82 Al 8 Ca 10 was determined to be a pseudo-binary eutectic composition [liquid solidifying into ␣-Mg and (Mg,Al) 2 Ca in the Mg-Al-Ca ternary system with a eutectic melting temperature of 789 K]. A series of Mg x (Al 0.44 Ca 0.56 ) 100−x alloys, where 75 ഛ x ഛ 95, were cast into ⌽4 mm rods using copper mold casting. The eutectic alloy exhibits the highest fracture strength, f ‫ס‬ 609 MPa. For 75 ഛ x ഛ 79, the alloys have hypereutectic microstructures with Mg 2 Ca as the primary phase, and f is reduced together with diminishing plasticity. For hypoeutectic alloys with 86 ഛ x ഛ 95, the volume fraction of the primary ␣-Mg dendrites dispersed in the eutectic matrix increases with increasing x, resulting in a gradual decrease of the yield and fracture strengths but improved plastic strain to as large as 9%. The refined microstructures created in bulk samples via chill casting can lead to a good combination of strength and plasticity, with specific strength superior to commercial Mg alloys.

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Section: Introductionmentioning

confidence: 97%

Microstructure and compressive properties of chill-cast Mg–Al–Ca alloys

Shi

Teng

et al. 2006

J. Mater. Res.

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“…Moreover, Mg 65 Cu 25 Gd 10 with higher glass-forming ability has also been reported and its glass rod with diameter of at least 8 mm can be fabricated by the copper mold casting method [13] . Furthermore, based on Mg-Cu-Gd ternary system, the quaternary Mg-Cu-Ni-Gd alloy [14] and a quinary Mg-Cu-Ag-Pd-Gd alloy [15] have been developed. A bulk glassy alloy with a diameter of 10 mm was produced for Mg 65 Cu 15 Ag 5 Pd 5 Gd 10 by the copper mold casting method.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of Mg65Cu25−x Zn x Gd10 (x=0, 5) metallic glass

Huang

et al. 2008

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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The effect of substitutional element Zn on corrosion behavior of Mg 65 Cu 25 Gd 10 glass was investigated. The amorphous structure of Mg 65 Cu 25 -x Zn x Gd 10 (x=0, 5) alloys were examined by X-ray diffractometry and differential scanning calorimetry (DSC). The dissolution rates of Mg 65 Cu 25 -x Zn x Gd 10 (x=0, 5) metallic glasses in a 5 wt% NaCl solution with pH value of 7 were determined by a hydrogen evolution testing method. The corrosion behavior of these alloys was characterized using dipping tests with 5 wt% NaCl, in combination with electrochemical measurements and scanning electron microscopy (SEM). Results show that the anti-corrosion ability of Mg 65 Cu 25 Gd 10 alloy is significantly improved due to the addition of Zn. Possible mechanism responsible for the improvement is discussed.

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“…Recently, it has been reported that Mg 65 Cu 25 Gd 10 alloy [7] exhibits a significantly improved GFA so that metallic glass rods with diameter of 8 mm were obtained by copper mold casting. Moreover, based on Mg 65 Cu 25 Gd 10 , a series of new Mg-based amorphous alloys with higher GFA have been developed [8][9][10][11][12][13][14] . So Mg 65 Cu 25 Gd 10 has become the foundation for studying other Mg-based metallic glasses, however, the understanding of Mg 65 Cu 25 Gd 10 is very limited.…”

Section: Introductionmentioning

confidence: 99%

Structure relaxation of Mg65Cu25Gd10 metallic glass and its effect on strength

Cai²,

et al. 2009

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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To identify the re-arrangement of constituent atoms of an amorphous Mg 65 Cu 25 Gd 10 alloy happened with annealing, structure relaxation of the alloy was investigated as a function of annealing time at 373 K through extended X-ray absorption fine structure (EXAFS) analysis procedures. To understand the effect of structure relaxation on strength, compression tests were conducted for both the as-cast and the annealed Mg 65 Cu 25 Gd 10 samples. It is found that short range order around Cu and Gd atoms exhibits different variation trends with increasing annealing time at 373 K, though the structure of the alloy still remains to be amorphous. Based on the fact that the strength of the alloy first exhibits a reduction and then a recovery with annealing time, it is suggested that the enhancement of short range order around Cu should be responsible for the strength reduction, while the enhancement of short range order around Gd should be responsible for the strength recovery.

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Fabrication and Mechanical Properties of Mg<SUB>65</SUB>Cu<SUB>15</SUB>Ag<SUB>5</SUB>Pd<SUB>5</SUB>Gd<SUB>10</SUB> Bulk Metallic Glass

Cited by 42 publications

References 13 publications

Microstructure and compressive properties of chill-cast Mg–Al–Ca alloys

Microstructure and compressive properties of chill-cast Mg–Al–Ca alloys

Corrosion behavior of Mg65Cu25−x Zn x Gd10 (x=0, 5) metallic glass

Structure relaxation of Mg65Cu25Gd10 metallic glass and its effect on strength

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