scholarly journals Influence of Al on glass forming ability and nanocrystallization behavior of cast-iron based bulk amorphous alloy

2015 ◽  
Vol 30 (6) ◽  
pp. 818-824 ◽  
Author(s):  
Hyo Yun Jung ◽  
Mihai Stoica ◽  
Seong Hoon Yi ◽  
Do Hyang Kim ◽  
Jürgen Eckert
Keyword(s):  
Cast Iron ◽  
Amorphous Alloy ◽  
Glass Forming Ability ◽  
Bulk Amorphous Alloy ◽  
Glass Forming ◽  
Iron Based ◽  
Image Position

Abstract

Design of a bulk amorphous alloy containing Cu–Zr with simultaneous improvement in glass-forming ability and plasticity

2007 ◽  
Vol 22 (2) ◽  
pp. 486-492 ◽  
Author(s):  
Seok-Woo Lee ◽  
Sang-Chul Lee ◽  
Yu-Chan Kim ◽  
E. Fleury ◽  
Jae-Chul Lee
Keyword(s):  
Amorphous Alloy ◽  
Amorphous Alloys ◽  
Glass Forming Ability ◽  
Bulk Amorphous Alloy ◽  
Mixing Enthalpy ◽  
High Plasticity ◽  
Atomic Packing ◽  
Bulk Amorphous Alloys ◽  
Glass Forming ◽  
Enthalpy Difference

We synthesized bulk amorphous alloy systems of Cu43Zr43Al7X7 (X = Be, Ag; numbers indicate at.%), with the objective of simultaneously enhancing the glass-forming ability (GFA) and the plasticity. The alloys not only exhibit high plasticity (∼7%, ∼8%), but also possess enhanced GFA (alloys with 12 and 8 mm diameter). The possible mechanisms underlying this enhanced GFA and plasticity exhibited by these alloys are discussed based on the atomic-packing state and atomistic-scale compositional separation associated with the mixing enthalpy difference. A strategy for designing bulk amorphous alloys with simultaneous improvement in the GFA and the plasticity is proposed from the viewpoint of atomic-packing state and atomistic-scale phase separation.

Critical Cooling Rate of Y36Nd20Al24Co20 Bulk Amorphous Alloy

2014 ◽  
Vol 670-671 ◽  
pp. 86-89
Author(s):  
Shi Wen He
Keyword(s):  
Glass Transition ◽  
Amorphous Alloy ◽  
Cooling Rate ◽  
Supercooled Liquid ◽  
Supercooled Liquid Region ◽  
Glass Forming Ability ◽  
Bulk Amorphous Alloy ◽  
Liquid Region ◽  
Critical Cooling Rate ◽  
Glass Forming

A new bulk amorphous alloy, Y36Nd20Al24Co20, with a diameter of 5 mm was successfully fabricated by the method of equiatomic substitution for the Y element in Y56Al24Co20amorphous alloy. The values of the supercooled liquid region ∆Tx(=Tx-Tg), the reduced glass transition temperature Trg(=Tg/Tl) and the parameter γ (=Tx/(Tg+Tl)) for Y36Nd20Al24Co20bulk amorphous alloy are 60K, 0.605 and 0.415, respectively. The critical cooling rate of the Y36Nd20Al24Co20bulk amorphous alloy was determined to be 40 K/s, providing an indication that this alloy has a high glass-forming ability.

Thermal stability and glass forming ability of cast iron based CiPxB4.35 bulk amorphous alloys

2004 ◽  
Vol 201 (3) ◽  
pp. 476-481 ◽  
Author(s):  
M. Shapaan ◽  
A. Bárdos ◽  
J. Lábár ◽  
J. Lendvai ◽  
L. K. Varga
Keyword(s):  
Thermal Stability ◽  
Cast Iron ◽  
Amorphous Alloys ◽  
Glass Forming Ability ◽  
Bulk Amorphous Alloys ◽  
Glass Forming ◽  
Iron Based

Influence of Si on glass forming ability and properties of the bulk amorphous alloy Mg60Cu30Y10

2010 ◽  
Vol 527 (29-30) ◽  
pp. 7475-7479 ◽  
Author(s):  
K.M. Liu ◽  
H.T. Zhou ◽  
B. Yang ◽  
D.P. Lu ◽  
A. Atrens
Keyword(s):  
Amorphous Alloy ◽  
Glass Forming Ability ◽  
Bulk Amorphous Alloy ◽  
Glass Forming

scholarly journals A New Cu-Hf-Al-Be Bulk Amorphous Alloy with High Glass Forming Ability

2011 ◽  
Vol 31 (4) ◽  
pp. 186-190
Author(s):  
Sang-Soo Shin ◽  
Kyoung-Mook Lim ◽  
Seong-Nyeong Kim ◽  
Eok-Soo Kim
Keyword(s):  
Amorphous Alloy ◽  
Glass Forming Ability ◽  
Bulk Amorphous Alloy ◽  
Glass Forming

Numerical Model of Thermal Field Developed in Fe67Cr4Mo4Ga4P12B5C4 Bulk Amorphous Alloy Processing

2016 ◽  
Vol 254 ◽  
pp. 249-254
Author(s):  
Bogdan Radu ◽  
Dragoş Buzdugan ◽  
Cosmin Codrean ◽  
Viorel Aurel Şerban ◽  
George Vișan
Keyword(s):  
Amorphous Alloy ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Thermal Field ◽  
Good Control ◽  
Experimental Tests ◽  
Glass Forming Ability ◽  
Bulk Amorphous Alloy ◽  
Bulk Amorphous Alloys ◽  
Glass Forming

Metallic amorphous materials were developed during 80’s as new materials, with very interesting industrial properties (heat conductivity, magnetic properties, fusion temperature, corrosion resistance, etc.). Technology to obtain these materials, based on very rapid cooling of a melted alloy with glass forming ability, has limitations for the dimensions of the products that can be obtained with amorphous structure (thickness has to be very thin), which can be overpassed by development of bulk amorphous alloys with high glass forming ability and good control of the cooling speed. Numerical modeling of thermal field during ultra-high cooling, developed in researches presented in this paper, allows researchers to estimate the results of applying in reality certain cooling conditions. This model will help developers of bulk amorphous alloys in checking if are ensured conditions to obtain an amorphous alloy with fewer experimental tests, less time and low expenses.

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