Atomistic approach to design favored compositions for the ternary Al–Mg–Ca metallic glass formation

RSC Advances ◽  
2015 ◽  
Vol 5 (113) ◽  
pp. 93623-93630 ◽  
Author(s):  
S. Zhao ◽  
J. H. Li ◽  
J. B. Liu ◽  
S. N. Li ◽  
B. X. Liu
Keyword(s):  
Metallic Glass ◽  
Metallic Glasses ◽  
Glass Formation ◽  
Interatomic Potential

An interatomic potential was constructed and applied to design favoured compositions for the ternary Al–Mg–Ca metallic glasses formation.

Cluster-Based Bulk Metallic Glass Formation in Co (-Fe)-Si-B-Nb Alloy Systems

2007 ◽  
Vol 561-565 ◽  
pp. 1275-1278 ◽  
Author(s):  
Qing Wang ◽  
Chun Lei Zhu ◽  
Yan Hui Li ◽  
Jiang Wu ◽  
Chuang Dong ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Glass Formation ◽  
Bulk Metallic Glasses ◽  
Ternary Alloys ◽  
Glass Forming ◽  
Binary Clusters ◽  
Composition Formula ◽  
Alloy Systems

The present paper investigates the bulk metallic glass formation in Co-based alloy systems with the guidance of the cluster line and minor-alloying principles. The selected basic ternary Co-B-Si alloy compositions are intersecting points of cluster lines, defined by linking special binary clusters to the third element. Then these basic ternary alloys are further minor-alloyed with Nb and quaternary bulk metallic glasses are obtained only by 4-5 at. % Nb minor-alloying of the basic composition Co68.6B25.7Si5.7 that is developed from dense-packed cluster Co8B3. The bulk metallic glasses are expressed approximately with a unified simple composition formula: (Co8B3)1(Si,Nb)1. In addition, a quantity of Fe substitution for Co further improves the glass-forming abilities.

Atomistic modeling to investigate the favored composition for metallic glass formation in the Ca–Mg–Ni ternary system

2017 ◽  
Vol 19 (19) ◽  
pp. 12056-12063 ◽  
Author(s):  
S. Zhao ◽  
J. H. Li ◽  
S. M. An ◽  
S. N. Li ◽  
B. X. Liu
Keyword(s):  
Monte Carlo ◽  
Metallic Glass ◽  
Ternary System ◽  
Monte Carlo Simulations ◽  
Glass Formation ◽  
Interatomic Potential ◽  
Atomistic Modeling ◽  
System P

A realistic interatomic potential was first constructed for the Ca–Mg–Ni system and then applied to Monte Carlo simulations to predict the favored composition for metallic glass formation in the ternary system.

Icosahedral ordering in quasicrystals and metallic glasses

1986 ◽  
Vol 1 (1) ◽  
pp. 1-3 ◽  
Author(s):  
J. C. Phillips
Keyword(s):  
Metallic Glass ◽  
Radial Distribution ◽  
Metallic Glasses ◽  
Glass Formation ◽  
Distribution Functions ◽  
Critical Examination ◽  
Radial Distribution Functions

Many workers have recently conjectured that the underlying forces responsible for icosahedral clustering in crystals may also explain the origin of metallic glass formation. Critical examination of thermochemical structural diagrams and radial distribution functions of good metallic glasses shows that this assertion is unfounded.

Interatomic potential to predict the binary metallic glass formation

2010 ◽  
Vol 25 (5) ◽  
pp. 976-981 ◽  
Author(s):  
Baixin Liu ◽  
Jiahao Li ◽  
Wensheng Lai
Keyword(s):  
Metallic Glass ◽  
Glass Formation ◽  
Composition Range ◽  
Interatomic Potential ◽  
Thermodynamic Characteristics ◽  
Crystalline Lattice ◽  
Interatomic Potentials ◽  
Glass Forming ◽  
Binary Metal ◽  
Dynamics Simulations

Interatomic potentials are constructed for eight representative binary metal systems covering various structural combinations and thermodynamic characteristics. On the basis of the constructed interatomic potentials, molecular dynamics simulations reveal that the physical origin of metallic glass formation is the crystalline lattice collapsing while solute atoms are exceeding the critical value, thus determining two critical solid solubilities for the system. For a binary metal system, the composition range bounded by the two determined critical solid solubilities is therefore defined as its intrinsic glass-forming range, or quantitative glass-forming ability.

Room-Temperature Mechanical Properties and Glass Formation of Zr50Cu20Ni15Al(15-X)Tix (x=3, 5, 7) Bulk Metallic Glass Alloys

2011 ◽  
Vol 66-68 ◽  
pp. 741-746
Author(s):  
Jia Hua Zou ◽  
Zhi Chen Zhang ◽  
Shu Quan Sun
Keyword(s):  
Mechanical Properties ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Glass Formation ◽  
Room Temperature ◽  
Glass Forming Ability ◽  
Glass Forming ◽  
Ti Content ◽  
Ti Addition

In the present study, the Zr-Cu-Ni-Al based bulk metallic glasses with different Ti addition was successfully prepared by suction casting . It was found that the glass forming ability was improved with increasing of Ti content from 3 at.% to 7 at.%. However, with increasing of Ti content, the room-temperature plasticity decreased from 4.33% to 0.66 %.

The Microalloying Effects in Cu-Based Bulk Metallic Glasses

2011 ◽  
Vol 688 ◽  
pp. 407-412
Author(s):  
Li Jie Yue ◽  
Jin Sheng Han ◽  
Kun Xie
Keyword(s):  
Thermal Stability ◽  
Corrosion Resistance ◽  
Metallic Glass ◽  
Metallic Glasses ◽  
Glass Formation ◽  
Glassy Alloy ◽  
Liquid Region ◽  
Scanning Calorimetry ◽  
Glass Formation Ability ◽  
Better Than

The glassy alloy rods of Cu50Zr43Al7, (Cu50Zr43Al7)100-xYx(x=2,5) and (Cu50Zr43Al7)100-xAgx(x=6,7) with diameters of 3.0 mm were prepared by copper mold suction casting method. The influence of adding Ag and Y to Cu50Zr43Al7 metallic glass on glass formation ability (GFA) and thermal stability was studied by means of X-ray diffraction analysis (XRD) and differential scanning calorimetry (DSC). The results show that Ag and Y appropriate micro-addition enhance the glass formation ability and thermal stability of the Cu-Zr-Al metallic glass. The effect of Ag is better than that of Y. The addition of Ag causes a increase of the reduced glass transition temperature (Trg) of (Cu50Zr43Al7)100-xAgx alloy from 0.618 at 0 at.% Ag to 0.628 at 7 at.% Ag. The width of the supercooled liquid region of Cu43Zr43Al7Ag7 glassy alloy increases about 25K compared with that of Cu50Zr43Al7, and the γ value of Cu43Zr43Al7Ag7 reaches 0.433. The electrochemical corrosion behaviors of Cu50Zr43Al7, (Cu50Zr43Al7)100-xYx(x=2,5) and (Cu50Zr43Al7)100-xAgx(x=6,7) metallic glasses in 3.5% NaCl solution were investigated by potentiodynamic polarization method. It is found that corrosion resistance of all amorphous alloys is better than that of the corresponding crystalline alloys. The Ag and Y micro-addition improve corrosion resistance of Cu50Zr43Al7 metallic glass. The corrosion current density of Cu43Zr43Al7Ag7 metallic glass decreases 1~2 orders of magnitude compared with that of Cu50Zr43Al7.

New Calcium Based Bulk Metallic Glasses

2003 ◽  
Vol 806 ◽  
Author(s):  
Oleg N. Senkov ◽  
J. Mike Scott
Keyword(s):  
Thermal Properties ◽  
Metallic Glass ◽  
Metallic Glasses ◽  
Glass Formation ◽  
Bulk Metallic Glasses ◽  
Thermodynamic Models ◽  
Compositional Range

ABSTRACTThermal properties of a number of new Ca-based bulk metallic glasses are reported and discussed here. The compositional range of the new metallic glasses follows the formula:CaA(Y,Ln)B(Mg,Sn)C(Ga,Zn,Al,Ag)D(Cu,Ni)E,where A ranges from 0.40 to 0.70, B = 0 to 0.25, C = 0 to 0.25, D = 0 to 0.35, E = 0 to 0.35, A+B+C+D+E=1, and Ln represents the La group elements. The alloys have been developed based on specific criteria predicted from Senkov-Miracle topological and thermodynamic models for metallic glass formation, which narrow the compositional range for searching new metallic glasses.

scholarly journals Computational assisted design of the favored composition for metallic glass formation in a Ca–Mg–Cu system

RSC Advances ◽  
2017 ◽  
Vol 7 (62) ◽  
pp. 39082-39088
Author(s):  
S. Zhao ◽  
J. H. Li ◽  
S. M. An ◽  
S. N. Li ◽  
B. X. Liu
Keyword(s):  
Monte Carlo ◽  
Metallic Glass ◽  
Monte Carlo Simulations ◽  
Glass Formation ◽  
Interatomic Potential ◽  
System P

Based on the constructed realistic interatomic potential, the favored compositions of the Ca–Mg–Cu metallic glass are well predicted by Monte Carlo simulations.

Enhancing bulk metallic glass formation in Ni–Nb–Sn-based alloys via substitutional alloying with Co and Hf

2008 ◽  
Vol 23 (3) ◽  
pp. 688-699 ◽  
Author(s):  
Li Zhang ◽  
Mu-Jin Zhuo ◽  
Jian Xu
Keyword(s):  
Metallic Glass ◽  
Ternary System ◽  
Metallic Glasses ◽  
Glass Formation ◽  
Composition Range ◽  
Glass Forming Ability ◽  
Partial Substitution ◽  
Wide Composition Range ◽  
Positive Effects ◽  
Glass Forming

Bulk metallic glasses have been formed over a fairly wide composition range (54–62 at.% Ni, 32–36 at.% Nb, and 3–11 at.% Sn) in the Ni–Nb–Sn ternary system. Partial substitution of Co for Ni and Hf for Nb improves the glass-forming ability, eventually leading to 4 mm glassy rods at the Ni56Co3Nb28Hf8Sn5 composition. The positive effects of these alloying elements have been explained based on a systematic monitoring of the amount and morphology of the competing crystalline phases as a function of the Co and Hf contents.

Computation assisted design of favored composition for ternary Mg–Cu–Y metallic glass formation

2015 ◽  
Vol 17 (22) ◽  
pp. 14879-14889 ◽  
Author(s):  
Q. Wang ◽  
J. H. Li ◽  
B. X. Liu
Keyword(s):  
Metallic Glass ◽  
Glass Formation ◽  
Interatomic Potential ◽  
Glass Forming Ability ◽  
Glass Forming ◽  
System P

The authors employed the constructed Mg–Cu–Y interatomic potential as the starting base and established a relevant atomistic computation/simulation route to assist the design of favored and even optimized compositions and to elucidate the structural origin of glass forming ability in the Mg–Cu–Y system.

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