Glass formation in Cu50Zr50-xAlx and (Cu50Zr43Al7)100-xNbx alloys | ||
| Journal of Ultrafine Grained and Nanostructured Materials | ||
| مقاله 9، دوره 56، شماره 2، اسفند 2023، صفحه 205-212 اصل مقاله (1.4 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jufgnsm.2023.02.09 | ||
| نویسنده | ||
| Majid Tavoosi* | ||
| Department of Materials Engineering, Malek Ashtar University of Technology (MUT), Iran. | ||
| چکیده | ||
| In the present work, the effects of Al and Nb elements on the formation of glassy phase in Cu-Zr based bulk metallic glasses (BMGs) have been investigated. In this regards, different Cu50Zr50-xAlx and (Cu50Zr43Al7)100-xNbx samples with 2 mm in diameter were prepared using arc melting followed by injection casting in water-cooled copper mold. The results illustrated that Al has positive effect on increasing the glass forming ability (GFA) of Cu-Zr system, and it is possible to create a completely glassy structure in Cu50Zr43Al7 sample. In contrast, the addition of Nb has destructive effects on glass forming ability, the homogeneity and final mechanical properties of Cu-Zr-Al BMGs. The segregation of Nb during solidification process and precipitation of brittle B2-CuZr and Cu10Zr7 phases are the main reasons of lower ductility and compressive strength in the presence of Nb element. As-solidified samples containing Nb showed compressive fracture strength in the range of 1000-1650 MPa, which was much lower than Nb-free alloy (2050 MPa). | ||
| کلیدواژهها | ||
| Bulk metallic glass؛ Injection casting؛ Cu-Zr-Al؛ Mechanical properties | ||
| مراجع | ||
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