Achieving high damping capacity and strength simultaneously in a high-zinc aluminum alloy via melt spinning and hot extrusion

2021 ◽  
pp. 142376
Author(s):  
Xianna Meng ◽  
Datong Zhang ◽  
Weiwen Zhang ◽  
Cheng Qiu ◽  
Daolun Chen
Keyword(s):  
Aluminum Alloy ◽  
Melt Spinning ◽  
Hot Extrusion ◽  
Damping Capacity ◽  
High Zinc

Development of technology for processing of chip wastes made of Al—Mg—Sc system alloy using hot extrusion method

2021 ◽  
pp. 123-129
Author(s):  
N.N. Zagirov ◽  
Yu.N. Loginov ◽  
E.V. Ivanov ◽  
V.G. Kuz’min
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Production Process ◽  
Liquid State ◽  
Hot Extrusion ◽  
Technological Scheme ◽  
System Alloy ◽  
Chip Processing ◽  
Extrusion Method

The problem of chip processing of aluminum alloy containing scandium is considered. The difficulty of remelting due to easy oxidation of the alloy components is noted. It is proposed to dispose of the shavings without transferring the metal to liquid state. The aim of the work is to construct technological scheme for the processing of waste chips of the Al—Mg—Sc alloy formed as result of machining cast billets by cutting. Results of experiments including cold briquetting, hot extrusion and drawing are presented. The mechanical properties of the product obtained according to several variants of the technological scheme are measured. The possibility of continuous drawing of semi-finished product is shown. The conclusion is made about the possibility of using the scheme in the production process.

Characterization of AM60 Magnesium Alloy Prepared by Rapid Solidification and Plastic Consolidation Technique

2010 ◽  
Vol 667-669 ◽  
pp. 997-1002
Author(s):  
Tomasz Tokarski
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Rapid Solidification ◽  
Melt Spinning ◽  
Bulk Material ◽  
Structure Refinement ◽  
Hot Extrusion ◽  
Solidification Process ◽  
Protective Atmosphere ◽  
Material Structure

Magnesium and its alloys are attractive candidates for automotive and aerospace applications due to their relatively high strength and low density. However, their low ductility determined by hcp structure of material results in limitation of plastic deformation processing. In order to improve ductility as well as mechanical properties, structure refinement processes can be used. It is well known that effective refining of the material structure can be achieved by increasing the cooling rate during casting procedures, hence rapid solidification process (RSP) has been experimented for the fabrication of magnesium alloys. The present paper reports an experimental investigation on the influence of rapid solidification on the mechanical properties of AM60 magnesium alloy. In order to obtain RS material melt spinning process was applied in protective atmosphere, resulting in formation of RS ribbons. Following consolidation of the RS material is necessary to obtain bulk material with high mechanical properties, as so hot extrusion process was applied. It was noticed that application of plastic consolidation by hot extrusion is the most effective process to achieve full densification of material. For comparison purposes, the conventionally cast and hot extruded AM60 alloy was studied as well. The purpose of the present study was to investigate in detail the effect of rapid solidification and extrusion temperature on the structure and mechanical properties of the materials.

Recycling of 6061 Aluminum Alloy Cutting Chips Using Hot Extrusion and Hot Rolling

2007 ◽  
pp. 443-446
Author(s):  
Kazutaka Suzuki ◽  
Xin Sheng Huang ◽  
Akira Watazu ◽  
Ichinori Shigematsu ◽  
Naobumi Saito
Keyword(s):  
Aluminum Alloy ◽  
Hot Rolling ◽  
Hot Extrusion ◽  
6061 Aluminum Alloy

scholarly journals Enhanced Corrosion Resistance of Recycled Aluminum Alloy 6061 Chips Using Hot Extrusion Followed by ECAP

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Mohamed A. Taha ◽  
Adel T. Abbas ◽  
Faycal Benyahia ◽  
Hamad F. Alharbi ◽  
B. Guitián ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Material Properties ◽  
Saline Solution ◽  
Electrochemical Impedance ◽  
Hot Extrusion ◽  
Ecap Process ◽  
The Cost ◽  
Alloy 6061 ◽  
Resultant Material

The oxidation of aluminum machining chips retards the successful recycling through the conventional remelting route. A promising approach to overthrow this problem is the utilization of solid state recycling in converting aluminum machining chips directly into semifinished products to eliminate the cost of the remelting process and reduce CO2 emissions. Therefore, in recent work, chips of aluminum alloy (AA6061) were recycled by compaction and then extrusion conducted at 500°C, followed by equal channel pressing (ECAP) to study the resultant material properties and its microstructure. Moreover, the present investigation explores the influence of ECAP after hot extrusion on the corrosive behaviour of the recycled samples in saline solution (NaCl) by electrochemical impedance spectroscopy (EIS) and linear polarization (LP). The results demonstrated a remarkable enhancement of the recycled chips’ properties subjected to hot extrusion followed by the ECAP process. Furthermore, the successive ECAP passes leads to increased film thickness and decreased corrosion rate.

scholarly journals Mechanical Behavior of Multiwalled Carbon Nanotube Reinforced 7075 Aluminum Alloy Composites Prepared by Mechanical Milling and Hot Extrusion

2019 ◽  
Vol 22 (2) ◽  
Author(s):  
Eduardo Uriza-Vega ◽  
Caleb Carreño-Gallardo ◽  
Claudia López-Meléndez ◽  
Eduardo Cuadros-Lugo ◽  
Raúl Pérez-Bustamante ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Carbon Nanotube ◽  
Mechanical Behavior ◽  
Mechanical Milling ◽  
Hot Extrusion ◽  
Multiwalled Carbon Nanotube ◽  
7075 Aluminum Alloy ◽  
Multiwalled Carbon

scholarly journals Improving Mechanical, Thermal and Damping Properties of NiTi (Nitinol) Reinforced Aluminum Nanocomposites

2020 ◽  
Vol 4 (1) ◽  
pp. 19 ◽  
Author(s):  
Penchal Reddy Matli ◽  
Vyasaraj Manakari ◽  
Gururaj Parande ◽  
Manohar Reddy Mattli ◽  
Rana Abdul Shakoor ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Thermal Expansion ◽  
Elastic Modulus ◽  
Yield Strength ◽  
Coefficient Of Thermal Expansion ◽  
Microwave Sintering ◽  
Hot Extrusion ◽  
Damping Capacity ◽  
Damping Properties ◽  
Niti Particle

In the present study, Ni50Ti50 (NiTi) particle reinforced aluminum nanocomposites were fabricated using microwave sintering and subsequently hot extrusion. The effect of NiTi (0, 0.5, 1.0, and 1.5 vol %) content on the microstructural, mechanical, thermal, and damping properties of the extruded Al-NiTi nanocomposites was studied. Compared to the unreinforced aluminum, hardness, ultimate compression/tensile strength and yield strength increased by 105%, 46%, 45%, and 41% while elongation and coefficient of thermal expansion (CTE) decreased by 49% and 22%, respectively. The fabricated Al-1.5 NiTi nanocomposite exhibited significantly higher damping capacity (3.23 × 10−4) and elastic modulus (78.48 ± 0.008 GPa) when compared to pure Al.

Effect of Granule Size in Semi-Solid Slurry on Rheo-Extrusion of A7075 Aluminum Alloy

2007 ◽  
Vol 561-565 ◽  
pp. 291-294 ◽  
Author(s):  
Yasuhiro Uetani ◽  
Ryotaro Nagata ◽  
Hidetoshi Takagi ◽  
Kenji Matsuda ◽  
Susumu Ikeno
Keyword(s):  
Aluminum Alloy ◽  
Solution Treatment ◽  
Hot Extrusion ◽  
Granule Size ◽  
Extrusion Ratio ◽  
Peak Hardness ◽  
Simple Method ◽  
Ram Speed ◽  
Semi Solid ◽  
Solid Granule

Rheo-extrusions of A7075 aluminum alloy were carried out utilizing semi-solid slurries with different solid granule sizes, which were made by a simple method combined a thin upright tube with a water-cooled tube. Every structure of slurries was granular and average solid granule sizes could be controlled by 0.05 to 0.11mm. These slurries were extruded to round bars at extrusion ratio of 36 and press ram speed of 10mm/s mainly, just after cooling to 833K ( fs > 0.9 ). All of the slurries could easily be extruded to bars with smooth surfaces at much low extrusion forces than those of hot-extrusions. Tensile strength of rheo-extruded bars after solution treatment increased with decreasing of the solid granule size. Peak hardness level at T6 condition equivalent to that of hot-extrusion could be obtained at the finest solid granule size.

scholarly journals The Production of Material with Ultrafine Grain Structure in Al-Zn Alloy in the Process of Rapid Solidification

2014 ◽  
Vol 14 (2) ◽  
pp. 57-62
Author(s):  
M. Szymaneka ◽  
B. Augustyn ◽  
D. Kapinos ◽  
S. Boczkal ◽  
J. Nowak
Keyword(s):  
Rapid Solidification ◽  
Melt Spinning ◽  
Hot Extrusion ◽  
High Strength ◽  
Strength Properties ◽  
Grain Structure ◽  
Ultrafine Grain ◽  
Plastic Working ◽  
Metal Treatment ◽  
Ultrafine Grain Structure

Abstract In the aluminium alloy family, Al-Zn materials with non-standard chemical composition containing Mg and Cu are a new group of alloys, mainly owing to their high strength properties. Proper choice of alloying elements, and of the method of molten metal treatment and casting enable further shaping of the properties. One of the modern methods to produce materials with submicron structure is a method of Rapid Solidification. The ribbon cast in a melt spinning device is an intermediate product for further plastic working. Using the technique of Rapid Solidification it is not possible to directly produce a solid structural material of the required shape and length. Therefore, the ribbon of an ultrafine grain or nanometric structure must be subjected to the operations of fragmentation, compaction, consolidation and hot extrusion. In this article the authors focussed their attention on the technological aspect of the above mentioned process and described successive stages of the fabrication of an AlZn9Mg2.5Cu1.8 alloy of ultrafine grain structure designated for further plastic working, which enables making extruded rods or elements shaped by the die forging technology. Studies described in the article were performed under variable parameters determined experimentally in the course of the alloy manufacturing process, including casting by RS and subsequent fragmentation.

Microstructure and mechanical properties of a high-Zn aluminum alloy prepared by melt spinning and extrusion

2020 ◽  
Vol 819 ◽  
pp. 152990 ◽  
Author(s):  
Xianna Meng ◽  
Datong Zhang ◽  
Weiwen Zhang ◽  
Cheng Qiu ◽  
Guangxing Liang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Melt Spinning ◽  
Microstructure And Mechanical Properties
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