Solidification microstructures of Cu–Zr–Al–Y BMG produced by casting in a wedge-shaped copper mold
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Ke Yang
, Xinhui Fan , Bing Li , Yanhong Li und Xin Wang
Abstract
In this paper, Cu43Zr48Al9 and (Cu43Zr48Al9)98Y2 bulk metallic glasses were prepared by casting them in a wedge-shaped copper mold. X-ray diffraction, optical microscopy, scanning electron microscopy and transmission electron microscopy were used to analyze their microstructures. Wedge casting is an effective and flexible technique for exploring alloy solidification microstructures. The results demonstrate that the development of microstructural transitions is related to the thickness of the wedge-shaped samples. These microstructural transitions are represented by the appearance of altered microstructural morphologies as well as changes from one product structure to another. It is found that the crystal/glass transition occurs as a U-shape change in Cu-based wedge-shaped alloys. Further, the critical cooling rate of (Cu43Zr48Al9)98Y2 became lower than that of Cu43Zr48Al9 and that (Cu43Zr48Al9)98Y2 has a better glass forming ability. We developed practical strategies in microstructure control to extend our knowledge of phase competition leading to the successful synthesis of Cu-based metallic glass.
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Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Effect of grain defects on the mechanical behavior of nickel-based single crystal superalloy
- Evolution of mechanical properties and microstructure of differently cryogenically treated hot die steel AISI–H13
- Microstructure and mechanical properties of nickel particle reinforced magnesium composite: impact of reinforcement introduction method
- Microstructure and mechanical properties of carbon nanotube-reinforced ZK61 magnesium alloy composites prepared by spark plasma sintering
- Solidification microstructures of Cu–Zr–Al–Y BMG produced by casting in a wedge-shaped copper mold
- Energy spectrum analysis of anodic oxidation film surface–interface on 7475 aluminum alloy after salt spray corrosion
- Fabrication of Ni/SiC composite powder by mechanical alloying and its effects on properties of copper matrix composites
- The sintering behavior and physical properties of Li2CO3-doped Bi0.5(Na0.8K0.2)0.5TiO3 lead-free ceramics
- The effect of heating rate on the microstructural breakdown required for thixoformability
- Nano-particles in powder injection molding of an aluminum matrix composite: Rheological behavior, production and properties
- Short Communications
- Preparation of vaterite CaCO3 microspheres by fast precipitation method
- Slag corrosion resistance of Al4SiC4
- DGM News
- DGM News