Effect of Al on the Glass Forming Ability of Zr-Ni-Cu-Al Alloys

2002 ◽  
Vol 93 (3) ◽  
pp. 223-227 ◽  
Author(s):  
Huan-Rong Wang ◽  
Yi-Fu Ye ◽  
Guang-Hui Min ◽  
Jun-Yan Zhang ◽  
Xin-Ying Teng ◽  
...  
Keyword(s):  
Glass Forming Ability ◽  
Al Alloys ◽  
Glass Forming

Glass-forming ability of Pr–(Cu,Ni)–Al alloys in eutectic system

2003 ◽  
Vol 18 (3) ◽  
pp. 664-671 ◽  
Author(s):  
Y. Zhang ◽  
H. Tan ◽  
H. Z. Kong ◽  
B. Yao ◽  
Y. Li
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Eutectic Composition ◽  
Solidus Temperature ◽  
Eutectic Point ◽  
Glass Forming Ability ◽  
Al Alloys ◽  
Eutectic System ◽  
Glass Forming

A eutectic point in Pr-rich Pr-(Cu,Ni)-Al alloys was experimentally determined by measuring the solidus temperature (Tm) and liquidus temperature (T1). It was found that Pr68(Cu0.5Ni0.5)25Al7 (at.%) is at the eutectic composition in the pseudoternary Pr–(Cu0.5Ni0.5)–Al alloys. The alloy Pr68(Cu0.5Ni0.5)25Al7 exhibits better glass-forming ability (GFA) than the ternary eutectic alloy Pr68Cu25Al7. However, the best GFA was obtained at an off-eutectic composition (Pr54[Cu0.5Ni0.5]30Al16) in the Pr–(Cu0.5Ni0.5)–Al alloys, which can be formed in fully amorphous rods with diameter of 1.5 mm by copper mold casting. Moreover, the glass-transition temperature Tg increases quickly (from 367 to 522 K) with the increasing of the Al content (from 3 to 27 at.%). The deviation of the best GFA composition from the eutectic point [Pr68(Cu0.5Ni0.5)25Al7] was explained in terms of the asymmetric coupled eutectic zone, the competition between growth of crystalline phase and formation of amorphous, and the higher glass-transition temperature Tg on the hypereutectic side.

Investigation of the effects of Al on the glass forming ability of Zr-Cu-Ni-Al alloys through their solidification characteristics

2019 ◽  
Vol 109 ◽  
pp. 105-109 ◽  
Author(s):  
P. Li ◽  
J.J. Wang ◽  
J.L. Cheng ◽  
F. Li ◽  
W. Zhao ◽  
...  
Keyword(s):  
Glass Forming Ability ◽  
Al Alloys ◽  
Glass Forming

Influence of yttrium addition on the glass forming ability in Cu–Zr–Al alloys

2008 ◽  
Vol 483-484 ◽  
pp. 235-238 ◽  
Author(s):  
Y. Zhang ◽  
J. Chen ◽  
G.L. Chen ◽  
X.J. Liu
Keyword(s):  
Glass Forming Ability ◽  
Al Alloys ◽  
Glass Forming ◽  
Yttrium Addition

Improving plasticity and toughness of Cu-Zr-Y-Al bulk metallic glasses via compositional tuning towards the CuZr

2010 ◽  
Vol 25 (2) ◽  
pp. 375-382 ◽  
Author(s):  
Yong Shen ◽  
Jian Xu
Keyword(s):  
Shear Modulus ◽  
Intermetallic Compounds ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Critical Diameter ◽  
Glass Forming Ability ◽  
Al Alloys ◽  
Simple Approach ◽  
Glass Forming ◽  
Tie Line

In this work, we propose a simple approach for designing plastic bulk metallic glasses (BMGs) by exploiting the ductility of intermetallic compounds involved in the BMG-forming system. Its validity was examined by investigating a series of quaternary Cu-Zr-Y-Al alloys along the composition tie-line between Cu42Zr44.4Y3.6Al10 (Y1) and the B2 CuZr phase, expressed as (Cu0.5Zr0.5)x(M)100-x (M = Zr0.15Y0.225Al0.625, 84≤x≤93). When tuning the composition towards the CuZr, the glass-forming ability of alloys is dramatically degraded, showing a reduction of critical diameter Dc for BMG formation from 16 mm at x = 84 (Y1) to 2 mm at x = 93. As the composition of BMGs shifts to the CuZr terminal, the shear modulus μ of the BMGs decreases, whereas the Poisson's ratio ν increases. With respect to the Y1 BMG, compressive plasticity and toughness of the Y2 BMG (x = 92, Dc = 4 mm) with a higher concentration of the CuZr are improved, which is consistent with its lower μ and higher ν values.

Continuous Amorphization of Zr-Based Alloys by Controlled Mechanical Intermixing

1998 ◽  
Vol 554 ◽  
Author(s):  
G. Wilde ◽  
H. Sieber ◽  
J. H. Perepezko
Keyword(s):  
Grain Size ◽  
Solid State ◽  
Critical Value ◽  
Glass Forming Ability ◽  
Al Alloys ◽  
Al Alloy ◽  
Mechanical Working ◽  
Glass Forming ◽  
Ni Alloys ◽  
State Amorphization

AbstractBinary Zr-(Cu, Ni, Al) alloys were mechanically intermixed by cold-rolling stacks of elemental foils. The results indicate that solid-state amorphization is initiated if the grain size of the Zr-Cu and Zr-Ni alloys falls below a critical value. Amorphization was not observed for the Zr-Al alloy. These results are in accordance to the predictions of a model for solid-state amorphization. The comparison with the results on a quaternary Zr-Cu-Ni-Al alloy indicate the influence of multicomponent alloying on the glass-forming ability of Zr-rich alloys by mechanical working.

Computational thermodynamics to identify Zr–Ti–Ni–Cu–Al alloys with high glass-forming ability

2006 ◽  
Vol 54 (11) ◽  
pp. 2975-2982 ◽  
Author(s):  
Hongbo Cao ◽  
Dong Ma ◽  
Ker-Chang Hsieh ◽  
Ling Ding ◽  
William G. Stratton ◽  
...  
Keyword(s):  
Glass Forming Ability ◽  
Al Alloys ◽  
Computational Thermodynamics ◽  
Glass Forming
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