Investigation of interface evolution, microstructure and mechanical properties of solid-state bonding seams in hot extrusion process of aluminum alloy profiles

2016 ◽  
Vol 230 ◽  
pp. 153-166 ◽  
Author(s):  
Junquan Yu ◽  
Guoqun Zhao ◽  
Liang Chen
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Solid State ◽  
Hot Extrusion ◽  
Extrusion Process ◽  
Interface Evolution ◽  
Solid State Bonding ◽  
Microstructure And Mechanical Properties

In-Situ Solid-State Synthesis of Mg Composite with Mg2Si Dispersoids

2005 ◽  
Vol 475-479 ◽  
pp. 497-500
Author(s):  
Ritsuko Tsuzuki ◽  
Katsuyoshi Kondoh
Keyword(s):  
Mechanical Properties ◽  
Solid State ◽  
High Performance ◽  
Extrusion Direction ◽  
Hot Extrusion ◽  
Extrusion Process ◽  
Synthesis Temperature ◽  
Solid State Synthesis ◽  
Casting Alloys

Super light and high performance Mg2Si/Mg composites, which had excellent mechanical properties, were developed via the combination of solid-state synthesis and hot extrusion process. In this study, cold compacting (CP) and repeated plastic working (RPW) were firstly carried out for the mixture of Mg-Si powders, and the refinement of both Mg grains and dispersoids. Each specimen was evaluated by observation of microstructure and tensile test. As a result, it was understood that Mg2Si dispersoids were refined and dispersed into Mg matrix, and were flowed along extrusion direction. And their mechanical properties were higher than the conventional die casting alloys. Also the effect of RPW as the improvement of properties and the decrease of synthesis temperature were confirmed.

Recycling of EN AW 2011 Aluminum Chips without Remelting

2019 ◽  
Author(s):  
Branimir Lela ◽  
Jure Krolo
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Aluminum Alloy ◽  
Hot Extrusion ◽  
Extrusion Process ◽  
Extrusion Temperature ◽  
Influential Factor ◽  
Depth Of Cut ◽  
Extrusion Force ◽  
Main Research

This article deals with the direct recycling of EN AW 2011 aluminum alloy chips, which are formed by turning, into semifinished products using forward hot extrusion process. Direct recycling without re-melting is usually called solid-state recycling. The main aim of this article is to investigate the influence of depth of cut (size of chips) in the aluminum alloy turning process, extrusion temperature, and compaction force on mechanical properties, surface roughness, and extrusion force of recycled samples. An original approach to solve this problem is mathematical modelling of the process using the design of experiments. The influence of main research factors on yield strength (Rp0,2), hardness (HV), extrusion force (F), and surface roughness (Ra) of recycled samples has been studied. The study has shown that the most influential factor on mechanical properties, surface roughness, and extrusion force was extrusion temperature.

Microstructure and Mechanical Properties of As-Cast and As-Extruded Mg-Gd-Er-Zn-Zr Alloy

2015 ◽  
Vol 1088 ◽  
pp. 221-226 ◽  
Author(s):  
Kai Wen ◽  
Wen Bo Du ◽  
Ke Liu ◽  
Zhao Hui Wang ◽  
Shu Bo Li
Keyword(s):  
Mechanical Properties ◽  
Tensile Test ◽  
Room Temperature ◽  
Cast Alloy ◽  
Extrusion Direction ◽  
Hot Extrusion ◽  
Extrusion Process ◽  
Microstructure And Mechanical Properties ◽  
Room Temperature Tensile Test ◽  
Zr Alloy

The Microstructure and mechanical properties of as-cast and as-extruded Mg-12Gd-2Er-1Zn-0.6Zr alloy are investigated in the present paper. The microstructure is analyzed by OM, SEM and TEM with SAED, and the mechanical properties are valued by the room temperature tensile test. The result shows that the coarse Mg5(Gd, Er, Zn) phase in the as-cast alloy was broken during hot extrusion process, and it was distributed at the grain boundary along the extrusion direction. The enhancement in mechanical properties of the extruded alloy is mainly ascribed to the refinement of these grains. The sizes of dynamical recrystallized grains are homogeneously, which was about 7 μm. Stacking fault existed in the as-cast alloy, which has a little effect on the dynamic recrystallization because of its tiny thicknesses.

Effects on Mechanical Properties of Solid State Recycled Aluminium 6061 by Extrusion Material Processing

2017 ◽  
Vol 730 ◽  
pp. 317-320 ◽  
Author(s):  
Syaiful Nizam Ab Rahim ◽  
Mohd Amri Lajis
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Solid State ◽  
Aluminium Alloy ◽  
High Performance ◽  
Hot Extrusion ◽  
Extrusion Process ◽  
Structural Features ◽  
Processing Route ◽  
6061 Aluminium Alloy

In this research, mechanical properties of recycled 6061 aluminium alloy, produced by solid state recycling through extrusion, were compared to as-received billets. Aluminum 6061 chips were extruded using a hot extrusion machine. The effects of extrusion parameters on the mechanical properties of the produced recycled 6061 aluminium alloy were investigated. The objective of the study was to analyze the mechanical and structural features of the alloy after plastic consolidation. The extrusion processes were conducted at different preheat temperatures and preheat times, while the ram speed was kept constant. The findings of the study highlighted the potential of combining the extrusion process parameters as an efficient processing route for production of high quality and high-performance type of extruded billets. Tensile test results showed that, material extruded at 550°C exhibited better mechanical properties compared to that extruded at 400°C. The higher temperature resulted in a higher tensile strength being produced, at the expense of a trade-off in ductility. Overall, it was revealed that, the ultimate tensile strength (UTS) and elongation (ETF) of the produced recycled 6061 aluminium through extrusion exhibited mechanical and structural properties comparable to those of the as-received billets.

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