Junquan Yu
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View article: Inverse Hall–Petch Effect in Pure Mg Explained by Slip-System Selection
Inverse Hall–Petch Effect in Pure Mg Explained by Slip-System Selection Open
View article: Extrusion Deformation Behavior and Microstructure, Mechanical Property Evolution of Al-Cu-Li Alloy Profiles with Variable Width-to-Thickness Ratios
Extrusion Deformation Behavior and Microstructure, Mechanical Property Evolution of Al-Cu-Li Alloy Profiles with Variable Width-to-Thickness Ratios Open
View article: Curvature, microstructure, and mechanical property of an asymmetric aluminium profile produced by sideways extrusion with variable speed
Curvature, microstructure, and mechanical property of an asymmetric aluminium profile produced by sideways extrusion with variable speed Open
View article: Cryogenic deformation behavior, constitutive modeling and microstructure evolution of solution-treated 2195 Al–Li alloy at high strain rates
Cryogenic deformation behavior, constitutive modeling and microstructure evolution of solution-treated 2195 Al–Li alloy at high strain rates Open
In this paper, the flow behavior, constitutive model and microstructure evolution of solution-treated 2195 Al–Li alloy at temperatures from 123 K to 298 K and strain rates from 2000 s−1 to 5000 s−1 were studied. Experimental results show t…
View article: Deformation behavior, constitutive modeling and microstructure evolution of 2195 Al-Li alloy deformed at high strain rates and cryogenic temperatures
Deformation behavior, constitutive modeling and microstructure evolution of 2195 Al-Li alloy deformed at high strain rates and cryogenic temperatures Open
High-speed and cryogenic-temperature forming technologies have exhibited great potential for fabricating advanced Al-Li alloy components for aircraft due to their ability to enhance materials’ formability. However, there remains an urgent …
View article: Optimization design of porthole die and study on microstructures and mechanical properties for an Al–Li alloy hollow profile
Optimization design of porthole die and study on microstructures and mechanical properties for an Al–Li alloy hollow profile Open
In this paper, a hollow Al–Li alloy profile was taken as an example, and the optimization design method of Al–Li alloy porthole die was given. Compared with the basic die design, the optimized die reduces the standard deviations of velocit…
View article: Numerical analysis of tooling design for extruding wide aluminium hollow profiles using multi-container extrusion technology
Numerical analysis of tooling design for extruding wide aluminium hollow profiles using multi-container extrusion technology Open
View article: Analysis of solid-state welding in extruding wide aluminium hollow profiles using a new three-container extrusion system
Analysis of solid-state welding in extruding wide aluminium hollow profiles using a new three-container extrusion system Open
View article: Development of a Solid-State Extrusion-Roll-Bonding Based Additive Manufacturing Technology for Aluminum Alloys
Development of a Solid-State Extrusion-Roll-Bonding Based Additive Manufacturing Technology for Aluminum Alloys Open
View article: Experimental study on tensile deformation behaviors under room and elevated temperatures induced by microstructure inhomogeneity of ZK60 Mg with a longitudinal weld
Experimental study on tensile deformation behaviors under room and elevated temperatures induced by microstructure inhomogeneity of ZK60 Mg with a longitudinal weld Open
The tensile tests of the extruded ZK60 Mg containing a longitudinal weld seam were carried out at room and elevated temperatures, and the effects of induced microstructure inhomogeneity on tensile deformation behavior was clarified. The re…
View article: Feasibility study of a novel multi-container extrusion method for manufacturing wide aluminium profiles with low force
Feasibility study of a novel multi-container extrusion method for manufacturing wide aluminium profiles with low force Open
Extrusion profiles are extensively used in industries and any improvement in the process could potentially have a large impact on energy and cost savings. In this study, a novel extrusion method, namely multi-container extrusion, was propo…
View article: Experimental investigation of longitudinal and transverse welds during sideways extrusion
Experimental investigation of longitudinal and transverse welds during sideways extrusion Open
Differential velocity sideways extrusion (DVSE) is a novel process for fabricating curved profiles; welding quality during extrusion is an important issue for its industrial application. In this study, solid bars of aluminium alloy AA1070 …
View article: Springback Behavior and Nonlinear Springback Models of Aluminum Alloys Under Hot Compressive Deformation
Springback Behavior and Nonlinear Springback Models of Aluminum Alloys Under Hot Compressive Deformation Open
View article: A comparative study on deformation mechanisms, microstructures and mechanical properties of wide thin-ribbed sections formed by sideways and forward extrusion
A comparative study on deformation mechanisms, microstructures and mechanical properties of wide thin-ribbed sections formed by sideways and forward extrusion Open
View article: Advances and Trends in Forming Curved Extrusion Profiles
Advances and Trends in Forming Curved Extrusion Profiles Open
Curved profiles/sections have been widely used for manufacturing lightweight structures with high stiffness and strength due to aerodynamics, structural properties, and design reasons. Structural components fabricated using curved aluminum…
View article: Development of novel differential velocity sideway extrusion techniques to fabricate lightweight curved structural components
Development of novel differential velocity sideway extrusion techniques to fabricate lightweight curved structural components Open
In this paper a new extrusion technology, in which two punches are used, and its application to forming lightweight curved structural profiles, is described. The technology is known as differential velocity sideway extrusion (DVSE) and can…
View article: Investigation of material flow behaviour and microstructure during differential velocity sideway extrusion
Investigation of material flow behaviour and microstructure during differential velocity sideway extrusion Open
Differential velocity sideway extrusion (DVSE) process is a cutting-edge technology to manufacture curved profiles with solid or hollow cross-sections. Extrusion welding is inevitable to form hollow cross-section profiles during DVSE. In t…
View article: Manufacturing a curved profile with fine grains and high strength by differential velocity sideways extrusion
Manufacturing a curved profile with fine grains and high strength by differential velocity sideways extrusion Open
View article: Microstructure and Mechanical Properties of the As-Cast and As-Homogenized Mg-Zn-Sn-Mn-Ca Alloy Fabricated by Semicontinuous Casting
Microstructure and Mechanical Properties of the As-Cast and As-Homogenized Mg-Zn-Sn-Mn-Ca Alloy Fabricated by Semicontinuous Casting Open
In this paper, a new type of low-cost Mg-3.36Zn-1.06Sn-0.33Mn-0.27Ca (wt %) alloy ingot with a diameter of 130 mm and a length of 4800 mm was fabricated by semicontinuous casting. The microstructure and mechanical properties at different a…
View article: Study on the welding quality in the porthole die extrusion process of aluminum alloy profiles
Study on the welding quality in the porthole die extrusion process of aluminum alloy profiles Open
As a typical plastic deformation process with high productivity, porthole die extrusion process has been widely used to produce a variety of aluminium alloy profiles. For the profiles extruded with porthole dies, the welding quality of lon…