A5111132125- Aluminum Alloys Composites Properties
- Aluminum Alloy Microstructure Properties
- Magnesium Alloys: Properties and Applications
- Advanced materials and composites
- Solidification and crystal growth phenomena
- Advanced ceramic materials synthesis
- Cognitive Computing and Networks
- Metal and Thin Film Mechanics
- Microstructure and mechanical properties
- Access Control and Trust
- Boron and Carbon Nanomaterials Research
- Service-Oriented Architecture and Web Services
- Metallurgy and Material Forming
- Additive Manufacturing Materials and Processes
- Titanium Alloys Microstructure and Properties
- Intermetallics and Advanced Alloy Properties
- Hand Gesture Recognition Systems
- MXene and MAX Phase Materials
- Thermodynamic and Structural Properties of Metals and Alloys
- Gait Recognition and Analysis
- Metallurgical and Alloy Processes
- Color perception and design
- Data Visualization and Analytics
- Data Management and Algorithms
- Human Pose and Action Recognition
Lanzhou University of Technology
2010-2024
Xi'an Jiaotong University
2004
Abstract Selecting a proper warehouse location serving to satisfy the demands of goods from certain business area is important successful retail business. However, large solution space, uncertain traffic conditions, and varying preferences impose great challenges on selection. Conventional approaches mainly summarize relevant evaluation criteria compile them into an analysis report facilitate rapid data absorption but fail support comprehensive joint decision‐making process in In this paper,...
The effects of two main processing parameters such as reheating temperature and time on microstructure tensile properties thixoforged AZ63 magnesium alloy have been investigated. results indicate that these all large the properties. However, in contrast, liquid fraction composition semisolid ingot, thus subsequent solidification behaviour plastic deformation during thixoforging, are larger than those time. Therefore, former parameter relatively latter parameter. It is also just this reason...
This paper presents a formal security analysis of the ISA100.11a standard protocol using Colored Petri Net (CPN) modeling approach. Firstly, we establish threat model for and provide detailed description identified threats. Secondly, use CPN tool to formally conduct checking analysis. Finally, analyze discuss results checking, which demonstrate that may have vulnerabilities when certain threats exist, some suggestions enhance protocol. research provides level assurance serves as reference...
In the present work, authors investigated microstructural evolution process of equal channel angular pressed (ECAPed) AZ91D magnesium alloy during partial remelting, and effects pressing pass, route heating temperature on semisolid microstructures. The results indicated that microstructure could be divided into four steps: initial coarsening due to dissolution interdendritic eutectics, structure separation resulting from melting residual eutectic penetration firstly formed liquid...
Powder thixoforming, a novel method for preparing and forming particle-reinforced metal-matrix composites has been proposed, the effect of reheating temperature on microstructure tensile properties thixoforged SiCp/2024 Al-based composite was investigated. The results indicated that influences liquid amount compactness subsequent solidification behaviour during thixoforging. best comprehensive properties, ultimate strength 361 MPa, yield 271 MPa elongation 4.2%, were obtained under 70 min at...
Abstract Microstructural evolution during partial remelting of AM60B alloy refined by 0.2 wt.% SiC particles at 615 °C has been investigated. The effect as-cast microstructure on the resulting semisolid also discussed. results indicate that process includes five stages, initial rapid coarsening, structure separation, spheroidization and melting final coarsening. finer is, smaller more spheroidal primary are. There is a threshold for grain size microstructure. When about 100 μm, one dendrite...
The semisolid microstructural evolution of refined in situ Mg2Sip/AM60B composite the mushy zone has been investigated. results indicated that adopted refining technique is effective for composite. non-dendritic microstructure with fine and spheroidal solid particles could be obtained after being partially remelted at 30 minutes. Reheating temperature affects size, shape factor composition primary α-Mg liquid fraction system. These effects result from phase transformation rate, which...
In this study, several heterogeneity-improved heterostructured 2024Al alloys were fabricated by forming in situ Al3Ti particles through powder thixoforming. The results indicated that the inter-soft-domain distance (primary grains) decreased and reached its minimum at ball-milling time of 8 h, then, slightly increased. boundary densities hard domains (secondarily solidified structures) soft their maximum values time. resulting alloy exhibited ultimate tensile strength 430 MPa, yield 275...
The effects of several casting parameters on microstructure and dendrite morphology ZA27 alloy have been investigated. results indicate that rising pouring temperature, solidifying in the mould with large chilling ability or small diameter cavity may change primary phase from normal equiaxed dendrites to feathery grains. Four lines secondary arms form around trunk a grain. Two them exist twin plane (111) other two an angle 70·5° plane. All 60° trunk. former are easier grow up than lines....
Designing a heterostructure with reasonable increase in heterogeneity is promising way for improving strength-ductility synergy of metals. In this work, heterogeneity-improved heterostructured 2024Al alloys differences volume fractions soft and hard domains have been fabricated via forming situ fine Al 3 Ti particles through powder thixoforming. The results indicate that the fraction domain (primary α-Al grains) decreases while (secondarily solidified structures) gradually increases...
In this article, a new method for the production of nondendritic semisolid ZA27 alloy available thixoforming was developed. The results indicated that microstructure with small and spherical primary particles could be obtained when had been treated 3 h at 370°C then partially remelted temperature 460°C. This not only overcome some inevitable shortcomings resulting from using present popular approaches but also simplify procedure thixoforming. coarsening dendritic arms through merging during...