Abstract
Background: Unlike the traditional crystalline metals, metallic glasses are lack of longrange order and have short-range order. Metallic glasses as amorphous alloys have excellent physical, chemical and mechanical properties, and have a broad application prospects in military, aerospace and sports equipment due to their unique microstructure. Currently, machining has been considered as a promising method to obtain MGs components with low surface roughness and high dimensional accuracy. In addition, it was found that the normal cutting force is substantially equal to the tangential forces in nanometric cutting of MGs by molecular dynamics simulation, which is different from that of crystal alloys. Therefore, the objectives of this paper are to investigate the effect of machining parameters on cutting forces in nanometric cutting process and analyze the microstructure evolution of the metallic glass workpiece.
Methods: The radial distribution functions were calculated to verify the amorphous state of workpiece. The microstructure of workpiece was used to analyze by the common neighbor analysis. In addition, the calculation of cutting forces was adapted to truncation radius method during all the simulations. Results: There are no obvious changes of lattice structure in nanometric cutting of Cu50Zr50 MGs. The cutting force increases with the increase of cutting speed and depth and then keeps on a steady value in stable cutting process. Furthermore, the normal cutting force is substantially equal to the main cutting force during all nanometric cutting simulations of MGs and larger elastic recovery was founded on the machined surface. Conclusion: Nanometric cutting at room temperature does not change the microstructures of Cu50Zr50MGs. There is no strain hardening in machining of MGs. Small elastic modulus will cause large elastic recovery on the machined surface. Therefore the normal cutting force is nearly equal to the main cutting force in nanometric cutting of MGs.Keywords: Amorphous alloys, nanometric cutting, molecular dynamics simulation, radial distribution function.
Graphical Abstract
Call for Papers in Thematic Issues
Role of nanomaterials in fabrication of coatings, Machining and Joining
The application of nanoscience has brought about a revolution in the field of mechanical engineering by providing novel materials, boosting manufacturing processes, and generating cutting-edge products. The purpose of this special issue is to investigate the enormous impact that nanoscience has had on mechanical engineering, with a particular emphasis on ...read more
Advanced Inorganic Nanocomposites and Their Emerging Applications
This special issue collection will highlight developments on the recent trends about the synthesis of metal oxides, nanoclusters, biomaterials, 2D nanomaterials, nanocrystals, nanocomposites, etc. and their applications in electrochemical systems, tissue regeneration, energy storage and harvesting, sensors, etc. The novelty of the methods in the chemical synthesis and their characterizations, ...read more
Applicability of Nanotechnology for Performance Enhancement of Clean Energy Technologies
Population growth, industrialization, and improvement in living quality would lead to further increase in energy demand in near future. Regarding the disadvantages of fossil fuels such as fluctuations in their price, high emissions of greenhouse gases and restriction of their sources, it is crucial to use and exploit alternative energy ...read more
Graphene and 2D Materials for Energy Storage and Conversion
This thematic issue will discuss the recent advances in graphene-based nanomaterials for different energy technologies. Graphene possesses a high surface area, and stable structure and exhibits many interesting electronic, optical, and mechanical properties due to its 2D crystal structure. Graphene is of both fundamental interest and suitable for a wide ...read more
Related Books
Nanoscale Field Effect Transistors: Emerging Applications
Nanoelectronics Devices: Design, Materials, and Applications Part II
Nanoelectronics Devices: Design, Materials, and Applications (Part I)
Role of Nanotechnology in Cancer Therapy
Synthesis and Applications of Semiconductor Nanostructures
Pathways to Green Nanomaterials: Plants as Raw Materials, Reducing Agents and Hosts
Applications of Nanomaterials in Medical Procedures and Treatments
Synthesis of Nanomaterials
Nanobiotechnology: Principles and Applications
Bio-Inspired Nanotechnology
21
1