Investigation of a ductile and corrosion-resistant Pd79Au1.5Ag3Si16.5 bulk metallic glass

2010 ◽  
Vol 25 (10) ◽  
pp. 1943-1949
Author(s):  
N. Chen ◽  
C.L. Qin ◽  
G.Q. Xie ◽  
D.V. Louzguine-Luzgin ◽  
A. Inoue
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glassy Phase ◽  
Glassy Alloy ◽  
High Thermal Stability ◽  
Corrosion Resistant ◽  
Excellent Corrosion Resistance ◽  
Potential Applications ◽  
Bulk Glassy Alloy ◽  
High Degree

A new Pd79Au1.5Ag3Si16.5 bulk metallic glass was successfully synthesized in a maximum casting thickness range to 3 mm. Upon heating, the single glassy phase decomposed into Pd-rich crystalline phases and a Si-rich amorphous phase due to solute partitioning. In addition to high thermal stability, this bulk glassy alloy also exhibited a high degree of ductility and excellent corrosion resistance, showing potential applications as biomaterials.

Melting Liquid Joint Method of Ti(Cu)-Base Bulk Metallic Glassy Alloy

2007 ◽  
Vol 26-28 ◽  
pp. 707-710
Author(s):  
Kun Su Son ◽  
Xin Min Wang ◽  
Akihiro Makino ◽  
Akihisa Inoue
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
High Velocity ◽  
Glassy Alloy ◽  
Metallic Liquid ◽  
Large Bulk ◽  
Bulk Glassy Alloy ◽  
Joint Method

Techniques for joint of materials are developed over 2000 years. The metallic liquid jointing technique which enables the joint of Ti41.5Cu42.5Ni7.5Hf5Zr2.5Si1 bulk glassy alloy without any crystallization is very useful to produce large bulk metallic glass. High velocity molten alloy streams are generated by ejection of alloy liquid through two nozzles at different sites. The jointed region has nearly the same structure, thermal stability and mechanical properties as those for the original glassy Ti41.5Cu42.5Ni7.5Hf5Zr2.5Si1 alloy.

The Effect of Co Addition on Glassy Forming Ability and Soft Magnetic Properties of Fe-Si-B-P Bulk Metallic Glass

2012 ◽  
Vol 508 ◽  
pp. 112-116 ◽  
Author(s):  
Xue Li ◽  
Yan Zhang ◽  
Hidemi Kato ◽  
Akihiro Makino ◽  
Akihisa Inoue
Keyword(s):  
Magnetic Properties ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glassy Alloy ◽  
High Strength ◽  
Alloy System ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Co Addition ◽  
Ferromagnetic Bulk

We Successfully Prepared the Rod Glassy Samples of (Fe1-xCox)76Si9B10P5 (x = 0~0.4) Bulk Metallic Glass (BMG) with the Diameters up to 3.0 mm by Substituting Fe for a Small Amount of Co Element. A Certain Amount of Co Substitution for Fe Contributes to the Increase of the Glass-Forming Ability (GFA) while Maintaining Good Mechanical Properties (the Fracture Strength up to 3700 MPa). This Co-Added Ferromagnetic Bulk Glassy Alloy System Also Exhibits a Higher Saturation Magnetization of 1.49 T and Lower Coercive Force (Hc, 1.2 A/m). The Fe-Based BMGs with Alloying a Small Amount of Co Element Demonstrate Excellent Combination of High GFA, Good Soft-Magnetic Properties as Well as High Strength.

Formation of a Crystalline-Glass Composite in a Cu-Based Bulk Metallic Glass by Using the Cu-Pb Monotectic System

2007 ◽  
Vol 124-126 ◽  
pp. 1501-1504
Author(s):  
Dae Han Yoo ◽  
Hee Sam Kang ◽  
Woo Young Yoon
Keyword(s):  
Electron Microscope ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glassy Phase ◽  
Fracture Strain ◽  
Monotectic Reaction ◽  
Glass Composite ◽  
Transmission Electron ◽  
Monotectic System ◽  
Compressive Tests

To synthesize a crystalline-glass composite in a Cu-based bulk metallic glass, the monotectic reaction was used. The (Zr-Sn-Pb)-rich crystalline phase was found to coexist with the (Cu-Ti-Ni)-rich glassy phase during the process of quenching from the melt in the (Cu47Ti33Zr11Ni6Sn2Si1)100-x+Pbx=1,2 system. Microstructures consisting of uniformly dispersed crystalline particles in the amorphous matrix were observed by scanning electron microscope (SEM) and transmission electron microscope (TEM). Compressive tests demonstrated that the fracture strain of the sample with a Pb content of 1 at% was three times higher than that of the sample with no Pb.

Deformation and fracture behavior of corrosion-resistant, potentially biocompatible, Ti40Zr10Cu38Pd12 bulk metallic glass

2012 ◽  
Vol 536 ◽  
pp. S74-S77 ◽  
Author(s):  
J. Fornell ◽  
S. González ◽  
E. Pellicer ◽  
N. Van Steenberge ◽  
P. Pérez ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Fracture Behavior ◽  
Corrosion Resistant ◽  
Deformation And Fracture

Formation and Mechanical Properties of Mg-Cu-Al-Gd Bulk Metallic Glass Composites

2010 ◽  
Vol 650 ◽  
pp. 290-294
Author(s):  
Yi Ming Wang ◽  
Li Jing Zheng ◽  
Shu Jie Pang
Keyword(s):  
Mechanical Properties ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glassy Alloy ◽  
Glassy Matrix ◽  
Crystalline Phases ◽  
Glass Composites ◽  
Al Content ◽  
Bulk Metallic Glass Composites ◽  
Mold Casting

The effect of Al addition to Mg65Cu25Gd10 glassy alloy on the microstructure, thermal properties and mechanical properties were investigated. The Mg65Cu25-xAlxGd10 (x=1-7at. %) bulk metallic glass composites were formed by copper mold casting, and the fraction and size of the crystalline phases in the glassy matrix changed with the Al content. The Mg65Cu24Al1Gd10 glass composite consisted of a small amount of crystalline phases in the glassy matrix possesses high compressive strength up to about 850 MPa.

Effects of Minor Si Addition on Glass Formation and Thermal Stability of Ni Free Ti-Based Bulk Metallic Glass

2013 ◽  
Vol 750 ◽  
pp. 36-39 ◽  
Author(s):  
Sheng Li Zhu ◽  
Guo Qiang Xie ◽  
Feng Xiang Qin ◽  
Xin Min Wang
Keyword(s):  
Thermal Stability ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glassy Alloy ◽  
Supercooled Liquid ◽  
Glass Forming Ability ◽  
Glass Forming ◽  
Si Content ◽  
Si Addition ◽  
Thermal Stability Of

The effects of small amounts of Si on the glass-forming ability, thermal stability and mechanical property of a TiZrCuPdSn bulk metallic glass were investigated. The addition of Si caused the decrease of glass-forming ability and the increase of the supercooled liquid (SCL) region. With 2 at.% Si addition, a significant SCL region of 80 K was obtained, which indicated high thermal stability of the glassy alloy and was in favor of secondary working by viscous flow deformation. With increasing Si content, the plasticity decreased.

Solidification Analyses for the Fabrication of Bulky Multicomponent Metallic Glasses and their Properties

1995 ◽  
Vol 400 ◽  
Author(s):  
Akihisa Inoue ◽  
Yoshiyuki Shinohara ◽  
Yoshihiko Yokoyama
Keyword(s):  
Liquid Crystalline ◽  
Glassy Phase ◽  
Glassy Alloy ◽  
Solidification Condition ◽  
Continuous Cooling ◽  
Arc Melting ◽  
Packed Structure ◽  
Bulk Glassy Alloy ◽  
Solidification Parameters ◽  
Nose Temperature

AbstractThe liquid-crystalline transformation during continuous cooling was examined for a Zr60Al10Ni10Cu15Pd5 alloy which was ejected into a wedge-shape cavity in a copper mold or solidified on a copper hearth by unidirectional arc melting. The structure consists of a glassy phase in the wedge angles smaller than 10 degrees and changes to glassy and crystalline phases in the higher angle range. The start (Cs) and termination (Ct) points for the transformation were determined and the continuous-cooling-transformation (C. C. T. ) curves were constructed. The nose temperature (Tn) and the time (tn) up to the nose point in the C. C. T. curves were 1018 K and 0.93 s. The critical cooling rate for glass formation defined by (Tm-Tn)/tn is 110 K/s. Furthermore, with the aim of clarifying a solidification condition for formation of a bulk glassy alloy by unidirectional arc melting, the relation between the formation of a glassy phase and the solidification parameters of moving velocity of liquid/solid interface (V), temperature gradient (G) and cooling rale (R) was examined. The glassy phase was obtained in the condition of V>3 mm/s, G>4 K/mm and R>40 K/s. The supercooling reaches 385 K at 40 K/s. The large supercooling ability is presumably due to the formation of a highly dense randomly packed structure where the nucleation of a crystalline phase and the atomic rearrangement for growth reaction are difficult.

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