scholarly journals Additive Manufactured Large Zr-Based Bulk Metallic Glass Composites with Desired Deformation Ability and Corrosion Resistance

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 597 ◽  
Author(s):  
Yu Luo ◽  
Leilei Xing ◽  
Yidong Jiang ◽  
Ruiwen Li ◽  
Chao Lu ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Large Scale ◽  
Bulk Metallic Glasses ◽  
Chemical Properties ◽  
Scale Production ◽  
Size Limitation ◽  
Deformation Ability

Zr-based bulk metallic glasses have been attracting tremendous interest of researchers because of their unique combination of mechanical and chemical properties. However, their application is limited as large-scale production is difficult due to the limitation of cooling rate. Recently, additive manufacturing technology has been proposed as a new solution for fabricating bulk metallic glasses without size limitation. In this study, selective laser melting technology was used to prepare Zr60Fe10Cu20Al10 bulk metallic glass. The laser parameters for fabricating full dense amorphous specimens were investigated. The mechanical and corrosion resistance properties of the prepared samples were measured by micro-compression and electrochemical corrosion testing, respectively. Lastly, Zr60Fe10Cu20Al10 bulk metallic glass (BMG) with dispersed nano-crystals was made, and good deformation ability was revealed during micro-compression test. The corrosion resistance decreased a bit due to the crystalline phases. The results provide a promising route for manufacturing large and complex bulk metallic glasses with better mechanical property and acceptable corrosion resistance.

scholarly journals Tension-Tension Fatigue Behavior of High-Toughness Zr61Ti2Cu25Al12 Bulk Metallic Glass

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2815
Author(s):  
Yu Hang Yang ◽  
Jun Yi ◽  
Na Yang ◽  
Wen Liang ◽  
Hao Ran Huang ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Shear Band ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Fatigue Resistance ◽  
Metallic Glasses ◽  
Stress Amplitude ◽  
Fatigue Behavior ◽  
Bulk Metallic Glasses ◽  
High Toughness

Bulk metallic glasses have application potential in engineering structures due to their exceptional strength and fracture toughness. Their fatigue resistance is very important for the application as well. We report the tension-tension fatigue damage behavior of a Zr61Ti2Cu25Al12 bulk metallic glass, which has the highest fracture toughness among BMGs. The Zr61Ti2Cu25Al12 glass exhibits a tension-tension fatigue endurance limit of 195 MPa, which is higher than that of high-toughness steels. The fracture morphology of the specimens depends on the applied stress amplitude. We found flocks of shear bands, which were perpendicular to the loading direction, on the surface of the fatigue test specimens with stress amplitude higher than the fatigue limit of the glass. The fatigue cracking of the glass initiated from a shear band in a shear band flock. Our work demonstrated that the Zr61Ti2Cu25Al12 glass is a competitive structural material and shed light on improving the fatigue resistance of bulk metallic glasses.

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.

Co-Based Bulk Metallic Glasses with Good Soft-Magnetic Properties and High Strength

2017 ◽  
Vol 898 ◽  
pp. 703-708 ◽  
Author(s):  
Qi Kui Man ◽  
Ya Qiang Dong ◽  
Chun Tao Chang ◽  
Xin Min Wang ◽  
Run Wei Li
Keyword(s):  
Magnetic Properties ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Eutectic Point ◽  
Glass Forming Ability ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Glass Forming

The thermal stability, glass-forming ability, soft-magnetic properties and mechanical properties of Co46Fe19+xB22.5Si5.5Nb7–x (x=0–2) bulk metallic glasses were investigated. The 5.5 at% Nb addition was found to be effective in approaching alloy to a eutectic point, resulting in an increase in glass-forming ability. By copper mold casting, bulk metallic glass rods with diameters up to 5 mm were produced. Except for high glass-forming ability, the bulk metallic glasses also exhibit good soft-magnetic properties, i.e., low coercive force of 1.34–2.14 A/m, high effective permeability at 1 kHz of 2.26–3.06×104, and high fractures strength (σf) of 4010–4460 MPa. This Co-based bulk metallic glass system with high strengths and excellent soft-magnetic properties is promising for future applications as a new functional material.

Mechanical Behavior of Fe60Co14Ga2P10B5Si3Al3C3 Bulk Metallic Glass

2014 ◽  
Vol 216 ◽  
pp. 45-48
Author(s):  
Dragoş Buzdugan ◽  
Cosmin Codrean ◽  
Viorel Aurel Şerban ◽  
Mircea Vodǎ
Keyword(s):  
Magnetic Properties ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Pressure Sensors ◽  
Pressure Vessels ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Science Field

Development of Fe-based bulk metallic glasses (BMG) with good mechanical and soft magnetic properties has become a major objective in the materials science field. Bulk metallic glasses present an interesting combination of properties. They exhibit very high strength (both in tension and compression), large elastic elongation limit, high hardness, excellent corrosion resistance, and good soft magnetic properties. These properties makes them suitable for many applications like high resistant control cables, pressure vessels, micro-components, pressure sensors, microgears for motors, magnetic cores for power supplies and hard fibers in composite materials. Multi-component Fe60Co14Ga2P10B5Si3Al3C3bulk metallic glass was synthesized in rod form with a diameter of 1 mm by copper mould casting technique using raw industrial materials. The obtained alloy was analyzed by X-ray diffraction (XRD), differential thermal analysis (DTA) and scanning electron microscopy (SEM) techniques, in order to determine the phase constituent, the thermal stability and the fracture surfaces of as-cast samples. The mechanical behaviour was investigated by microhardness and compression tests. The values recorded for hardness and fracture strength includes this alloy in the category of high resistant materials.

Effect of frame stiffness on the deformation behavior of bulk metallic glass

2010 ◽  
Vol 25 (10) ◽  
pp. 1958-1962 ◽  
Author(s):  
Z. Han ◽  
Y. Li ◽  
H.J. Gao
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Deformation Behavior ◽  
Shear Banding ◽  
Bulk Metallic Glasses ◽  
Designed Experiments ◽  
Machine Stiffness ◽  
The Stability ◽  
Frame Stiffness

It has been shown that the stability of shear banding and plasticity of bulk metallic glasses (BMGs) can be strongly influenced by the machine stiffness. Here, we demonstrated that the practice of adding a frame parallel to the sample is quantitatively equivalent to increasing the machine stiffness by the frame stiffness. A series of carefully designed experiments were conducted to verify such an effect, showing controllably enhanced plasticity of BMG samples.

Explosive Welding of ZrTiCuNiBe Bulk Metallic Glass to Crystalline Metallic Plates

2007 ◽  
Vol 566 ◽  
pp. 119-124 ◽  
Author(s):  
Akira Chiba ◽  
Yoshihito Kawamura ◽  
Minoru Nishida
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Explosive Welding ◽  
Bulk Metallic Glasses ◽  
Supercooled Liquid ◽  
Amorphous Structure ◽  
Supercooled Liquid Region ◽  
Liquid Region ◽  
Slow Cooling

Recently, a number of amorphous alloys that possess high glass-forming ability and a wide supercooled liquid region before crystallization have been discovered. Especially, bulk metallic glasses, which are made in bulk form with a thickness of ~10 mm at slow cooling rates of the order of 1~100 K/s, have been noted as an industrial application. Hence the welding of bulk metallic glasses to other materials is very important. Explosive welding of most popular Zr41.2Ti13.8Cu10Ni12.5Be22.5 bulk metallic glass to crystalline pure Ti and SUS304 plates is investigated in this paper. The BMGs was found to retain the amorphous structure and the original mechanical properties. The sound bonding with other materials is expected to push forward the application of bulk metallic glass for industrial usage.

Indentation and Friction of Cu44Zr43Al10Nb3 Bulk Metallic Glasses on Nano-Scale

2011 ◽  
Vol 130-134 ◽  
pp. 2750-2753
Author(s):  
Bao Ru Sun ◽  
Zai Ji Zhan
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Sliding Friction ◽  
Bulk Metallic Glasses ◽  
Nano Scale ◽  
Coefficient Of Sliding Friction

Indentation and sliding friction of the as-cast, the relaxed and the crystallized Cu44Zr43Al10Nb3 bulk metallic glass (BMG) are investigated on nanoscale by nanoindentation. The depth, the width and the morphology of the scratches formed by the tip of the nanoindentor are different, which reflect the differences in structure, not only between the glassy and the crystallized states but also between the two glassy states, the as-cast and the relaxed. The coefficient of sliding friction of Cu44Zr43Al10Nb3 BMG is increased with increasing the load, and it is maximal for annealed at 683K. Improved plastic deformability is found for the relaxed one.

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