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Consolidation and mechanical properties of ZrCu39.85Y2.37Al1.8 bulk metallic glass obtained from gas-atomized powders by spark plasma sintering
Intermetallics ( IF 4.4 ) Pub Date : 2021-09-20 , DOI: 10.1016/j.intermet.2021.107366
M. Suárez 1 , D. Fernández-González 1 , L.A. Díaz 1 , F. Diologent 2 , L.F. Verdeja 3 , A. Fernández 1
Affiliation  

This manuscript proposes subjecting gas-atomized powders of ZrCu39.85Y2.37Al1.8 metallic glass to spark plasma sintering (SPS). This bulk metallic glass (BMG) sinters at a temperature between its crystallization (Tx) and glass transition (Tg) temperatures, found to be 457 °C and 368 °C, respectively, via Differential Scanning Calorimetry (DSC). Several samples were sintered at different temperatures within the mentioned range (380, 390, 400, 415 and 430 °C). Experimental results confirmed successful sintering of the BMG by SPS at 390 °C and a pressure of 35 MPa. Fully amorphous compacts with almost 100% relative density were sintered at this temperature, reaching Young's modulus, Vickers hardness and compression strength values of 64.7 GPa, 396 HV0.3 and 1174 MPa, respectively. Sintering at higher temperatures involved crystallization of the sample. Results suggest that ZrCu39.85Y2.37Al1.8 metallic glass fabricated by SPS is a promising material for applications in different sectors, particularly jewelry, due to the wear resistance conferred by its hardness.



中文翻译:

气体雾化粉末放电等离子烧结ZrCu39.85Y2.37Al1.8块状金属玻璃的固结与力学性能

本手稿建议对 ZrCu 39.85 Y 2.37 Al 1.8金属玻璃的气体雾化粉末进行放电等离子烧结 (SPS)。这种块状金属玻璃 (BMG) 在其结晶 (T x ) 和玻璃化转变 (T g) 温度,通过差示扫描量热法 (DSC) 发现分别为 457 °C 和 368 °C。几个样品在上述范围内的不同温度(380、390、400、415 和 430 °C)下烧结。实验结果证实了 SPS 在 390 °C 和 35 MPa 压力下成功烧结 BMG。在该温度下烧结具有几乎 100% 相对密度的完全无定形压块,分别达到 64.7 GPa、396 HV0.3 和 1174 MPa 的杨氏模量、维氏硬度和抗压强度值。在较高温度下烧结涉及样品的结晶。结果表明 ZrCu 39.85 Y 2.37 Al 1.8 由于其硬度赋予的耐磨性,由 SPS 制造的金属玻璃是一种很有前途的材料,可用于不同领域,尤其是珠宝。

更新日期:2021-09-20
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