Understanding the effect of Hf on thermal stability and glass forming ability of Fe57.2Co30.8Zr7-xHfxB4Cu1 (x = 3, 5, and 7) metallic glasses

Investigation of glass forming ability parameters in Hf–Cu–Ni glassy alloy

“…Although the heating rate for the present alloy (i.e. Hf-Cu-Ni) is different from the other reported alloys [9][10][11][12][13][14][15][16] significant GFA-concentration correlation has been obtained and discussed in details concerning the role of the constituting elements on GFA.…”

“…Similarly for Zr-Al-Ni-Cu [14] and Cu-Ni-Zr-Ti [15] alloy heating rate was 0.67 K s −1 . For Fe-Co-Hf-Zr-B-Cu alloy heating rate was 0.17 K s −1 [16]. Although the heating rate for the present alloy (i.e.…”

“…This larger DT x is used as a measure of higher thermal stability because this suggests difficulty in the nucleation and growth of the crystallizing phase [16].…”

“…In the present work, compositional effects on widely used GFA parameter such T rg [3], DT x [4], α [5], g m [6], ε [7], and g* [8] have been evaluated. The obtained results are compared with Hf-Cu-Ni [9][10][11], Ti-Cu-Ni [12,13] ternary alloys, Zr-Cu-Ni-Al [14], Cu-Ni-Zr-Ti [15] quaternary alloys and Fe-Co-Hf-Zr-B-Cu [16] quinary alloys. For Hf-Cu-Ni alloy in the present work heating rate was 0.17 K s −1 as reported by Khond et al [2].…”

Thermodynamic Descriptions of the Co–Zr and Co–Fe–Zr Systems

“…[1] Fe substitution for Co can enhance the durability against the hydrogen-induced disproportionation, which makes it more favorable to store tritium. [2] And cobalt, iron and zirconium are the principal elements in amorphous alloys [3][4][5][6] and high-entropy alloys. [7][8][9] Furthermore, Hoque et al [10] have reported a two-phase magnetic Co 11 Zr 2 -Co 23 Zr 6 system and the addition of Fe can improve its magnetic and mechanical properties.…”