2006
DOI: 10.2320/matertrans.47.1294
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Formation, Thermal Stability and Mechanical Properties of Zr-Nb-Cu-Ni-Al Bulk Metallic Glasses

Abstract: Bulk Zr 62Àx Nb x Cu 15:4 Ni 12:6 Al 10 (x ¼ 0{10 at%) glassy alloys were prepared via copper mould casting. XRD, DSC, SEM and compression test show appropriate niobium addition can enhance the glass forming ability (GFA) and thermal stability of these alloys. The bulk amorphous alloy with x ¼ 2:5 displays the largest temperature interval of supercooled liquid region (ÁT x ) up to 105 K and the largest value 0.428. However, the largest critical diameter is not achieved at x ¼ 2:5 but at x ¼ 5 instead, indicati… Show more

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Cited by 14 publications
(6 citation statements)
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“…As a result, the cohesive energy increased with increasing Y 2 O 3 content which increased thermal stability. However, further addition of Y 2 O 3 decreased the thermal stability and this could be attributed due to the formation of quasi‐crystals which in turn decreases the glass‐forming ability . Zhuohao et al studied Y 2 O 3 ‐doped germanate oxyfluoride glass ceramics and reported that their thermal stability decreased when yttrium content increased from 0 to 9.30 mol% due to their tendency to crystallize .…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…As a result, the cohesive energy increased with increasing Y 2 O 3 content which increased thermal stability. However, further addition of Y 2 O 3 decreased the thermal stability and this could be attributed due to the formation of quasi‐crystals which in turn decreases the glass‐forming ability . Zhuohao et al studied Y 2 O 3 ‐doped germanate oxyfluoride glass ceramics and reported that their thermal stability decreased when yttrium content increased from 0 to 9.30 mol% due to their tendency to crystallize .…”
Section: Discussionmentioning
confidence: 99%
“…However, further addition of Y 2 O 3 decreased the thermal stability and this could be attributed due to the formation of quasi-crystals which in turn decreases the glass-forming ability. 68 Zhuohao et al studied Y 2 O 3 -doped germanate oxyfluoride glass ceramics and reported that their thermal stability decreased when yttrium content increased from 0 to 9.30 mol% due to their tendency to crystallize. 69 Mehta et al studied thermal stability of Se-Sb glassy alloys and reported an increase up to 4 mol% Sb content which decreased for 6, 8 and 10 mol % additions due to the decrease of bond energies.…”
Section: Discussionmentioning
confidence: 99%
“…Minor alloying additions in Zr-based alloys strongly affects the materials properties [9][10][11][16][17][18]. Improvement in supercooled liquid region and thermal stability of Zr 62 Cu 15.4 Ni 12.6 Al 10 BMGs by minor alloying using Nb has been reported by Dong et al [12]. The improved thermal stability was attributed to the increase in dense random packing structure, which suppressed the nucleation of crystalline phases.…”
Section: Introductionmentioning
confidence: 89%
“…Zr-Cu-Al-Ni alloys have been widely studied because of their wide range of applications [1][2][3][4][5][6] and used as structural materials, optical precision and tool materials, corrosion resistant, ornamental and composite materials and sporting goods [7,8]. Efforts are being devoted to improve the ductility by designing new alloy compositions or by minor alloying method [3,[9][10][11][12][13]. Comprehensive reviews [14,15] suggested that minor addition of small atoms with atomic radius < 0.12 nm or large atoms with radius > 0.16 nm are most effective to enhance the glass-forming ability (GFA) of BMGs.…”
Section: Introductionmentioning
confidence: 99%
“…Due to the excellent glass forming ability and high thermal stability, Zr57Nb5Al10Cu15.4Ni12.6 metallic glass was selected as the model alloy [36,37]. Zr57Nb5Al10Cu15.4Ni12.6 metallic glass was prepared by the arc-melting method in a pure argon atmosphere.…”
Section: Methodsmentioning
confidence: 99%