首页> 外文会议>International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials(ISMANAM 2004); 20040822-26; Sendai(JP) >Ca-Mg-Zn bulk metallic glasses with strong glass-forming ability synthesized under air atmosphere
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Ca-Mg-Zn bulk metallic glasses with strong glass-forming ability synthesized under air atmosphere

机译:大气气氛下合成玻璃形成能力强的钙镁锌大块金属玻璃

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摘要

The effect of alloy composition on the glass forming ability (GFA) of the Ca-rich Ca-Mg-Zn alloys has been investigated. In a wide composition range of 10% - 30% Zn and 5% - 25% Mg bulk metallic glass (BMG) samples with the diameter larger than 1 mm are fabricated by conventional copper mold casting method and injection casting method in air atmosphere. Among the alloys investigated, the Ca_(65)Mg_(15)Zn_(20) alloy exhibits the highest GFA enabling to form BMG sample with the diameter of at least 15 mm. The σ parameter has better correlation with D_(max) in the Ca-Mg-Zn alloys than previously suggested parameters such as ΔT_x, T_(rg), K and γ parameters.
机译:研究了合金组成对富Ca的Ca-Mg-Zn合金的玻璃形成能力(GFA)的影响。通过常规的铜模铸造法和注模法在大气中制造直径大于1 mm的大块金属玻璃(BMG),样品的锌含量在10%-30%Zn和5%-25%Mg的宽范围内。在研究的合金中,Ca_(65)Mg_(15)Zn_(20)合金表现出最高的GFA,能够形成直径至少15 mm的BMG样品。与先前建议的参数(例如ΔT_x,T_(rg),K和γ参数)相比,σ参数与Ca-Mg-Zn合金中的D_(max)具有更好的相关性。

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