Extrusion of Hard Alloys

2000 ◽  
pp. 187-211
Keyword(s):  
Aluminum Alloys ◽  
Wall Thickness ◽  
Material Flow ◽  
Aluminum Matrix ◽  
The Other ◽  
Alloying Elements ◽  
Aluminum Matrix Composites ◽  
Hard Alloys ◽  
Matrix Composites ◽  
Circle Diameter

Abstract This chapter discusses the extrusion characteristics of hard aluminum alloys, particularly those in the 5000 and 7000 series. It begins with a review of two studies, one showing how the extrudability of 7xxx alloys varies with the presence and amount of different alloying elements, the other relating minimum wall thickness with circumscribing circle diameter. It then explains how oxides on either the billet or container complicate the control of extrusion as well as auxiliary processes and how material flow and the movement of trapped gasses in different regions of the extrusion can lead to defects and variations in strength. It also discusses the extrusion of aluminum matrix composites and explains how composite billets are made.

Microstructures and Properties of Spinning for Silicon Carbide Particle Reinforced Aluminum Composite

2019 ◽  
Vol 944 ◽  
pp. 571-580
Author(s):  
Hai Bao Wu ◽  
Ji Zhen Li ◽  
De Fu Li ◽  
De Gui Liu ◽  
Guo Qiang Chai
Keyword(s):  
Heat Treatment ◽  
Wall Thickness ◽  
Solution Heat Treatment ◽  
Flow Line ◽  
Aluminum Matrix ◽  
Pipe Blank ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Aluminum Composite ◽  
Spinning Process

In this paper, 15% SiCp/2009A1 composites were subjected to multi-pass hot spinning experiments. The principle of the microstructure and properties of the materials was studied with the increase of thinning rate. The microstructures, interfaces, precipitates and their properties of the tube, which were in the states of spinning, spinning and solution heat treatment were analyzed and discussed.The research shows that it is possible to prepare spinning pipe with good shape and smooth surface by taking use of the spinning process of this paper. During the power spinning process, the force of the rotary wheel to the pipe causes the billet to produce two-way deformation, and the axial and tangential grains are obviously elongated and the flow line is formed.There are mainly Al, SiC, CuAl2and Mg2Si phases in the tube, and the spinning deformation does not change the phase composition of the composites, but the SiC distribution can be more uniform and the oxide film on the surface of the aluminum particles is broken, as a result that the oxygen element will cluster at the interface.The solution heat treatment after spinning can greatly improve the yield strength and tensile strength of SiC/Al composites with a slight decrease in plasticity. The spinning process used in this paper can not only form a composite pipe with a smaller diameter and thinner wall thickness, but it can still be applied when the diameter of the pipe blank becomes larger and the wall thickness becomes thicker.Through the research on spinning process and microstructure, the feasibility of spinning process for preparing aluminum matrix composites pipes was explored, which provided technical and theoretical support for the preparation and processing of Particulate reinforced aluminum matrix composites (PRAMCs) pipes for aviation and aerospace applications.

Physical Methods of Melt Processing at Production of Aluminum Alloys and Composites: Opportunities and Prospects of Application

2019 ◽  
Vol 946 ◽  
pp. 655-660 ◽  
Author(s):  
Vladislav Deev ◽  
Evgeny Prusov ◽  
Evgeny Rakhuba
Keyword(s):  
Aluminum Alloys ◽  
Aluminum Matrix ◽  
Physical Principle ◽  
Melt Processing ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Cast Aluminum ◽  
Physical Methods ◽  
Physical Processing ◽  
Average Size

The paper describes the advantages and prospects of using the physical methods of melts processing in the production of aluminum alloys and cast aluminum matrix composites. Classification of the physical methods of the melt processing by the state of metal during the processing period and by the physical principle of the imposed effects is proposed. The influence of physical processing of melts on the structure of aluminum matrix composites depending on the type of imposed influence and the origin of the reinforcing phases is shown. The positive effect of thermo-temporal treatment on the structure of materials was confirmed on example of in-situ composites of Al-Mg2Si system, it includes reduction in the average size of endogenous reinforcing phases and changing their morphology to a more compact.

Using explosive energy for processing aluminum matrix composites

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-119-Pr9-122
Author(s):  
V. Popov ◽  
V. Gulbin ◽  
E. Sungurov
Keyword(s):  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Explosive Energy

Effect of Titanium Carbide Particles on Mechanical Properties of Aluminum Matrix Composites

2017 ◽  
Vol 5 (2) ◽  
pp. 20-30
Author(s):  
Zaman Khalil Ibrahim
Keyword(s):  
Mechanical Properties ◽  
Titanium Carbide ◽  
Compression Strength ◽  
Volume Fraction ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Powder Metallurgy Technique ◽  
Carbide Particles ◽  
Properties Of Composites

In this research aluminum matrix composites (AMCs) was reinforced by titanium carbide (TiC) particles and was produced. Powder metallurgy technique (PM) has been used to fabricate AMCs reinforced with various amounts (0%, 4%, 8%, 12%, 16% and 20% volume fraction) of TiC particles to study the effect of different volume fractions on mechanical properties of the Al-TiC composites. Measurements of compression strength and hardness showed that mechanical properties of composites increased with an increase in volume fraction of TiC Particles. Al-20 % vol. TiC composites exhibited the best properties with hardness value (97HRB) and compression strength value (275Mpa).

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