Formation and Compression Behavior of Two-Phase Bulk Metallic Glasses with a Minor Addition of Aluminum

2011 ◽  
Vol 28 (3) ◽  
pp. 036103 ◽  
Author(s):  
Hai-Tao Zong ◽  
Ming-Zhen Ma ◽  
Xin-Yu Zhang ◽  
Li Qi ◽  
Gong Li ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Two Phase ◽  
Compression Behavior ◽  
Minor Addition ◽  
A Minor

Enhancement of glass-forming ability and corrosion resistance of Zr-based Zr-Ni-Al bulk metallic glasses with minor addition of Nb

2011 ◽  
Vol 110 (2) ◽  
pp. 023513 ◽  
Author(s):  
Yanhui Li ◽  
Wei Zhang ◽  
Chuang Dong ◽  
Chunling Qin ◽  
Jianbing Qiang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Glass Forming Ability ◽  
Glass Forming ◽  
Minor Addition

Effect of Minor Addition Ta on the Thermal Stability and Corrosion Resistance of Ti-Zr-Cu-Pd Bulk Metallic Glasses

2013 ◽  
Vol 750 ◽  
pp. 23-26 ◽  
Author(s):  
Feng Xiang Qin ◽  
Guo Qiang Xie ◽  
Sheng Li Zhu ◽  
Zhen Hua Dan
Keyword(s):  
Thermal Stability ◽  
Plastic Deformation ◽  
Corrosion Resistance ◽  
Metallic Glasses ◽  
Anodic Polarization ◽  
Volume Fraction ◽  
Bulk Metallic Glasses ◽  
Large Plastic Deformation ◽  
Minor Addition ◽  
Proper Volume

In this research, the effect of Ta addition on the formation, thermal stability and corrosion behavior of Ti-Zr-Cu-Pd bulk metallic glasses were investigated. The results revealed with minor addition of Ta, higher corrosion resistance and compressive strength as well as large plastic deformation were achieved. Minor addition Ta is effective for the formation of more protectively passive film during the process of anodic polarization. In addition, proper volume fraction nanoparticle with small size is responsible for the large plastic deformation of the as-cast Ti-based bulk metallic glasses with 1% Ta addition.

Enhancement of glass-forming ability and mechanical behavior of zirconium–lanthanide two-phase bulk metallic glasses

2015 ◽  
Vol 618 ◽  
pp. 795-802 ◽  
Author(s):  
Jie He ◽  
Norbert Mattern ◽  
Ivan Kaban ◽  
Fuping Dai ◽  
Kaikai Song ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Glass Forming Ability ◽  
Two Phase ◽  
Glass Forming

scholarly journals Compression Behavior of Mg-Cu-Gd Bulk Metallic Glasses with Various Specimen Height to Diameter Ratios

2007 ◽  
Vol 48 (7) ◽  
pp. 1802-1805 ◽  
Author(s):  
H. M. Chen ◽  
Y. C. Chang ◽  
T. H. Hung ◽  
X. H. Du ◽  
J. C. Huang ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Compression Behavior ◽  
Specimen Height

Enhancement of plasticity in Zr-based bulk metallic glasses

2007 ◽  
Vol 22 (9) ◽  
pp. 2454-2459 ◽  
Author(s):  
X.D. Wang ◽  
L. Yang ◽  
J.Z. Jiang ◽  
K. Saksl ◽  
H. Franz ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Concentration Ratio ◽  
Bulk Metallic Glasses ◽  
Amorphous Structure ◽  
Catastrophic Failure ◽  
X Ray Diffraction ◽  
Present Evidence ◽  
X Ray ◽  
The Stability ◽  
A Minor

We present evidence that a minor adjustment in Zr/Ni concentration ratio can dramatically enhance the plasticity of monolithic Zr-based bulk metallic glasses (BMGs) from about 2.2% for Zr65Al8Ni10Cu17 BMG to 14% for Zr62Al8Ni13Cu17 BMG. No deformation-induced nanocrystallization appears in a 55% strained Zr62Al8Ni13Cu17 BMG without catastrophic failure while pre-existing nanocrystals in Zr65Al8Ni10Cu17 BMG result in its limited plasticity. Also note that the stability of Zr62Al8Ni13Cu17 BMG against crystallization upon deformation is somewhat higher than that of Zr65Al8Ni10Cu17 BMG. As determined by x-ray diffraction using synchrotron radiation, the enhanced plasticity of Zr62Al8Ni13Cu17 BMG seems to be related to the relative homogeneity of the amorphous structure.

Improvement of plasticity by tailoring combination of constituent elements in Ti-rich Ti–Zr–Be–Cu–Ni bulk metallic glasses

2007 ◽  
Vol 22 (12) ◽  
pp. 3440-3447 ◽  
Author(s):  
E.S. Park ◽  
H.J. Chang ◽  
J.Y. Lee ◽  
D.H. Kim
Keyword(s):  
Metallic Glasses ◽  
Fracture Strain ◽  
Amorphous Matrix ◽  
Bulk Metallic Glasses ◽  
Enthalpy Of Mixing ◽  
Icosahedral Phase ◽  
Repulsive Interaction ◽  
Minor Addition ◽  
Constituent Elements ◽  
Degree Of Instability

The effect of replacement of Ti with Y or Nb in Ti-rich Ti–Zr–Be–Cu–Ni bulk metallic glasses (BMGs) has been investigated. The minor addition (MA) of Y (Y–Ti: +58 kJ/mol) induced phase separation into Y-rich crystalline particles and Ti-rich amorphous matrix, while the MA of Nb (Nb–Ti: +10 kJ/mol) led to nanocrystallization in Ti-rich BMGs with icosahedral nuclei. This result indicates that MA of elements having positive enthalpy of mixing can induce a different degree of instability in the single amorphous matrix depending on the amount of repulsive interaction energy. In particular, MA of Nb (up to 4 at.%) significantly increased the compressive fracture strain (ϵf) up to ∼9.35 ± 0.2%, which indicates that the plasticity of BMGs can be enhanced by the size-modulated icosahedral phase embedded in the amorphous matrix.

Enhancement of glass-forming ability and plasticity of Cu-rich Cu–Zr–Al bulk metallic glasses by minor addition of Dy

2014 ◽  
Vol 29 (12) ◽  
pp. 1362-1368 ◽  
Author(s):  
B.W. Zhou ◽  
L. Deng ◽  
X.G. Zhang ◽  
W. Zhang ◽  
H. Kimura ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Glass Forming Ability ◽  
Glass Forming ◽  
Minor Addition ◽  
Image Position

Abstract

Role of minor addition of metallic alloying elements in formation and properties of Cu–Ti-rich bulk metallic glasses

2008 ◽  
Vol 23 (7) ◽  
pp. 1995-2002 ◽  
Author(s):  
E.S. Park ◽  
H.J. Chang ◽  
J.S. Kyeong ◽  
D.H. Kim
Keyword(s):  
Metallic Glasses ◽  
Fracture Strain ◽  
Bulk Metallic Glasses ◽  
Enthalpy Of Mixing ◽  
Alloying Elements ◽  
Partial Substitution ◽  
Glass Forming ◽  
Minor Addition ◽  
The One

The effect of minor addition (MA) of metallic alloying elements in Cu–Ti-rich Cu–Ti–Zr–Ni–Si bulk metallic glasses (BMGs) has been investigated. MA of elements having a relatively small positive enthalpy of mixing (partial substitution of Zr with Nb) leads to enhancement of compressive plasticity (up to about 5% of fracture strain) when the addition leads to improvement in glass-forming ability (GFA). If the GFA is reduced (partial substitution of Ni with Ag or Co), the plasticity is also reduced. On the one hand, the MA of elements having a relatively large positive enthalpy of mixing (partial substitution of Zr with Y) can lead to the liquid-state phase separation in Cu–Ti–Zr–Ni–Si(–Sn) BMGs, although the addition can lead to drastic deterioration in GFA and plasticity. This concept would be considered to be effective even in design of other BMG systems with tailored properties.

Effect of Minor Addition of Noble Elements on Microstructure and Mechanical Properties of Ti-Based Bulk Metallic Glasses

2011 ◽  
Vol 148-149 ◽  
pp. 241-244 ◽  
Author(s):  
Feng Xiang Qin ◽  
Guo Qiang Xie ◽  
Zhen Hua Dan ◽  
Akihisa Inoue
Keyword(s):  
Mechanical Properties ◽  
Plastic Strain ◽  
Shear Band ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
High Strength ◽  
Copper Mold ◽  
Copper Mold Casting ◽  
Minor Addition ◽  
Mold Casting

Ti-based bulk metallic glasses with minor addition of Ag, Au or Pt elements were prepared by copper mold casting. The Microstructure of the as-cast samples was examined by TEM. Nanoparticles identified as cubic Pd3Ti with crystal planes of (111), (200), (220) and (311) are observed in all the alloys modified by the minor addition of Ag, Au or Pt. The results revealed that the glassy/nanoparticle composited alloys exhibited high strength about 2000 MPa and plastic strain between 1.5-10% due to the inhibition of propagation of shear band.

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