Effects of B upon glass forming ability of Al87Y8Ni5 amorphous alloy

Influence of mutual substitution between La and Gd on the glass-forming ability of Al–Ni–La–Gd alloys

“…(2) From B i ? C i , the La in the Al 18 La cluster has to be replaced by Gd since the La in the Al 16 La and Al 17 La clusters has been replaced completely. That is to say, Dn 16 % 0, Dn 17 % 0, but Dn 18 increases.…”

“…(4) From B 0 i ! C 0 i , all the Gd in the Al 18 Gd clusters has been replaced by La, and part of the Gd in the Al 16 Gd and Al 17 Gd clusters has to be replaced by La. As the substitution content increases, Dn 18 % 0, but both Dn 16 and Dn 17 increase.…”

“…However, cast samples with an amorphous thickness greater than 1 mm have not been achieved to date [12][13][14]; this restriction greatly limits their practical application. Hence, a significant issue is how to enhance the glass-forming ability (GFA) of Albased alloys [3,4,[15][16][17][18][19][20][21][22].…”

“…Al-Ni-RE alloys have relatively good GFA among the Al-based metallic glasses developed so far [3,4,[15][16][17][18][19][20][21][22], with the first Albased BMG rod with diameter of 1 mm synthesized from Al 85.5-Ni 9.5 La 5 [4]. Both a large RE atom and large negative enthalpy of mixing between the constituent elements are considered to be favorable for glass formation [27].…”

Formation of highly thermal stable Al88Ni6Y6 amorphous composite by graphene addition design

“…Thus, the improvement of GFA and thermal stability become very important. The microalloying technique has been used to effectively improve the GFA and thermal stability, and change the crystallization process of Al-based amorphous alloys [9][10][11]. The B addition could increase the activation energy for crystallization of the Al 87 Y 8 Ni 5 amorphous alloy from 159 up to 228 kJ/mol [9].…”