COLD ROLLING OF PRE-PROFILED STRIP FROM ALUMINUM ALLOY EN AW-1050

Specialists of metallurgy and mechanical engineering are intensively working at materials with controlled properties. In fact, at this stage we are already talking about the design of new materials for the specific tasks of the industry. One of the ways to achieve the regulated mechanical properties of metal products is to use the influence of plastic deformation with its different parameters in individual sections of the deformable material. In this study, we studied the effect of cold rolling on the properties of a strip of aluminum alloy EN AW-1050 with artificially created differences in the deformation parameters in different parts of the cross section of the profile. For this, a pre-shaped sample was prepared by conducting joint cold rolling of a strip of the specified material 420 mm long, 180 mm wide and 2.9 mm thick with a steel profiling tape 80 mm wide and 2 mm thick superimposed on it (length of an aluminum strip and steel profiling tape are the same). As a result of joint deformation, the steel strip rolled into the base metal and changed the geometry of the cross section and the properties of the obtained strip. Next, the obtained strip was subjected to heat treatment and rolled in a duo mill. After rolling, thin samples were made from fabricated flat strips to assess mechanical properties, in particular tensile tests were performed according to ISO 6892-1: 2009 and Brinell hardness tests were performed according to ISO 6506-1: 2014. Experimental studies of cold rolling of strips with profiled cross section of aluminum alloy EN AW-1050 were carried out. The possibility of forming heterogeneous properties in a flat aluminum strip by cold plastic deformation is shown and the maximum average values of the increase in the main indicators of mechanical properties on individual elements of the strip are determined. The maximum difference between the mechanical properties of the thick and thin elements of the profiled strip is observed in the hardness index and reaches 37.5%. The maximum obtained average value of the increase in yield strength and tensile strength is 26% and 18%, which is achieved with true deformation of the thick element of the profiled strip 0.165 and 0.234.

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Effect of Severe Plastic Deformation at Ambient Temperature on Microstructures and Mechanical Properties of Aluminum Alloy 2519

Materials Science Forum ◽

10.4028/www.scientific.net/msf.745-746.298 ◽

2013 ◽

Vol 745-746 ◽

pp. 298-302

Author(s):

Ying Liu ◽

Ruo Lin Cheng ◽

Jing Tao Wang ◽

He Zhang ◽

Xin Ming Zhang

Keyword(s):

Mechanical Properties ◽

Plastic Deformation ◽

Tensile Strength ◽

Aluminum Alloy ◽

Severe Plastic Deformation ◽

Cold Rolling ◽

Ambient Temperature ◽

Hardness Test ◽

Equal Channel Angular Processing ◽

Microstructures And Mechanical Properties

The effect of severe plastic deformation at ambient temperature on microstructures and mechanical properties of aluminum alloy 2519 was investigated by means of tensile test, micro-hardness test, optical microscopy and scanning electron microscopy. The results showed that tensile strength of as-queched 2519 alloy was greatly enhanced to nearly 550MPa (ultimate tensile strength, UTS) and 520MPa (yield strength, YS) by severe cold rolling or equal channel angular processing (ECAP) while the elongation decreased to 5%. The 2519 alloy could obtain quite well mechanical properties as much as 80 % and 12 passes cold rolling deformation. This indicated that pre-deformation by ECAP is effective in improving the mechanical properties of 2519 alloy by grain refinement, strain aging and high density dislocations.

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Effect of Cold Plastic Deformation on Mechanical Properties of Aluminum Alloy 2519 After Ageing

Materials Science Forum ◽

10.4028/www.scientific.net/msf.794-796.888 ◽

2014 ◽

Vol 794-796 ◽

pp. 888-893 ◽

Cited By ~ 6

Author(s):

Ivan Zuiko ◽

Marat Gazizov ◽

Rustam Kaibyshev

Keyword(s):

Mechanical Properties ◽

Plastic Deformation ◽

Cold Rolling ◽

True Strain ◽

Solution Treatment ◽

Age Hardening ◽

Peak Hardness ◽

Cold Plastic Deformation ◽

Angular Pressing ◽

Hardness Values

Effect of cold plastic deformation prior to ageing at 180°C on a microstructure and mechanical properties at room temperature for an AA2519 alloy was examined subjected to solution treatment and water quenching initially. It was found that cold rolling with a reduction of 15% or equal-channel angular pressing (ECAP) up to a true strain of ~1 leads to acceleration of age-hardening response of this alloy. Peak hardness values of 127, 175 and 169 HV0.2were achieved by ageing following quenching, cold rolling and ECAP, respectively. The highest values of yield stress (YS) of 475 MPa and ultimate tensile strength (UTS) of 520 MPa, were attained after ECAP followed by ageing. The effect of cold plastic deformation prior to ageing on the precipitation behavior and its relation with mechanical properties of the AA2519 is discussed.

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Rolling of Flat Aluminum Strips with Tailored Mechanical Properties

Materials Science Forum ◽

10.4028/www.scientific.net/msf.854.87 ◽

2016 ◽

Vol 854 ◽

pp. 87-92

Author(s):

Olexandr Grydin ◽

Serhii Bondarenko ◽

Mykhailo Stolbchenko ◽

Mirko Schaper

Keyword(s):

Mechanical Properties ◽

Aluminum Alloy ◽

Cold Rolling ◽

Cross Section ◽

Experimental Analysis ◽

Work Hardening ◽

Mechanical Characteristics ◽

Tensile Tests ◽

The Difference

In this study, the possibility of producing of flat aluminum strips with tailored mechanical properties across their width by means of rolling was examined. The aim of the work was an experimental analysis of the effect of cold rolling of the strips with a pre-profiled cross-section in flat rolls. Because of different work hardening of the various elements of the pre-profiled strips a characteristic profile of mechanical properties over the strips cross-section was created. The performed tensile tests and hardness measurements proved the possibility of setting of tailored properties in flat strips by means of rolling. The difference between the mechanical characteristics of various strip’s elements for the selected aluminum alloy can reach 40%.

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Experimental Studies Of Multilayer Glass Structures On Compression, Compression With Bending And Simple Bending

Promyshlennoe i Grazhdanskoe Stroitel stvo ◽

10.33622/0869-7019.2019.01.22-30 ◽

2019 ◽

pp. 22-30

Keyword(s):

Cross Section ◽

Cross Sections ◽

Applied Load ◽

Experimental Studies ◽

Strength Properties ◽

Research Topic ◽

Normative Values ◽

Laminated Glass ◽

The Cross ◽

Experimental Values

The work of multilayer glass structures for central and eccentric compression and bending are considered. The substantiation of the chosen research topic is made. The description and features of laminated glass for the structures investigated, their characteristics are presented. The analysis of the results obtained when testing for compression, compression with bending, simple bending of models of columns, beams, samples of laminated glass was made. Overview of the types and nature of destruction of the models are presented, diagrams of material operation are constructed, average values of the resistance of the cross-sections of samples are obtained, the table of destructive loads is generated. The need for development of a set of rules and guidelines for the design of glass structures, including laminated glass, for bearing elements, as well as standards for testing, rules for assessing the strength, stiffness, crack resistance and methods for determining the strength of control samples is emphasized. It is established that the strength properties of glass depend on the type of applied load and vary widely, and significantly lower than the corresponding normative values of the strength of heat-strengthened glass. The effect of the connecting polymeric material and manufacturing technology of laminated glass on the strength of the structure is also shown. The experimental values of the elastic modulus are different in different directions of the cross section and in the direction perpendicular to the glass layers are two times less than along the glass layers.

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Formation of microstructure and properties of Cu-3Ti alloy in thermal and thermomechanical processes

Archives of Metallurgy and Materials ◽

10.1515/amm-2017-0033 ◽

2017 ◽

Vol 62 (1) ◽

pp. 223-230 ◽

Cited By ~ 1

Author(s):

A. Szkliniarz

Keyword(s):

Mechanical Properties ◽

Electrical Conductivity ◽

Plastic Deformation ◽

Cold Working ◽

Cold Deformation ◽

Solution Treatment ◽

Cold Plastic Deformation ◽

Working Solution ◽

Thermomechanical Processes ◽

Selection Of

Abstract This paper presents the possibilities of forming the microstructure as well as mechanical properties and electrical conductivity of Cu-3Ti alloy (wt.%) in thermal and thermomechanical processes that are a combination of homogenising treatment, hot and cold working, solution treatment and ageing. Phase composition of the alloy following various stages of processing it into the specified semi-finished product was being determined too. It was demonstrated that the application of cold plastic deformation between solution treatment and ageing could significantly enhance the effect of hardening of the Cu-3Ti alloy without deteriorating its electrical conductivity. It was found that for the investigated alloy the selection of appropriate conditions for homogenising treatment, hot and cold deformation as well as solution treatment and ageing enables to obtain the properties comparable to those of beryllium bronzes.

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Experimental study on the thermal behaviour of fire exposed slim-floor beams

Proceedings 12th international conference on Advances in Steel-Concrete Composite Structures - ASCCS 2018 ◽

10.4995/asccs2018.2018.8288 ◽

2018 ◽

Cited By ~ 1

Author(s):

Vicente Albero ◽

Ana Espinós ◽

Enrique Serra ◽

Manuel L. Romero ◽

Antonio Hospitaler

Keyword(s):

Cross Section ◽

Thermal Behaviour ◽

Thermal Model ◽

Elevated Temperatures ◽

Experimental Studies ◽

Composite Beams ◽

Technical Equipment ◽

Design Code ◽

Special Configuration ◽

The Cross

Steel-concrete composite beams embedded in floors (slim-floors) offer various advantages such as the floor thickness reduction or the ease of installation of under-floor technical equipment. However, this typology presents important differences in terms of thermal behaviour, as compared to other composite beams, when exposed to elevated temperatures. These differences are due to their special configuration, being totally contained within the concrete floor depth. Moreover, the current European fire design code for composite steel-concrete structures (EN 1994-1-2) does not provide any simplified thermal model to evaluate the temperature evolution of each slim-floor part during a fire. Additionally, only a few experimental studies can be found which may help understand the thermal behaviour of these composite beams. This paper presents an experimental investigation on the thermal behaviour of slim-floor beams. Electrical radiative panels were used in the test setup to produce the thermal heating. The thermal gap between the lower flange of the steel profile and the bottom steel plate was studied, being found to be one of the most influential elements over the cross-section temperature gradient. The experimental campaign was developed by varying the cross-section configuration in order to evaluate the influence of this parameter over the slim-floor thermal behavior. Finally, the experiments carried out were used to develop and calibrate a finite element thermal model which may help in further research on the thermal behaviour of slim-floor composite beams.

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Characterization of Microstructure and Mechanical Properties of 6060 Aluminum Alloy Processed by ECAP

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.275.81 ◽

2018 ◽

Vol 275 ◽

pp. 81-88

Author(s):

Monika Karoń ◽

Marcin Adamiak

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Plastic Deformation ◽

Aluminum Alloy ◽

Internal Stresses ◽

Refined Grains ◽

Angular Pressing ◽

Heat Treated ◽

Evolution Of Microstructure

The purpose of this paper is to present the microstructure and mechanical behavior of 6060 aluminum alloy after intense plastic deformation. Equal Channel Angular Pressing (ECAP) was used as a method of severe plastic deformation. Before ECAP part of the samples were heat treated to remove internal stresses in the commercially available aluminium alloy. The evolution of microstructure and tensile strength were tested after 1, 3, 6 and 9 ECAP passes in annealed and non annealed states. It was found that intensely plastically deformed refined grains were present in the tested samples and exhibited increased mechanical properties. Differences were noted between samples without and after heat treatment

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Effect of the Cold Plastic Deformation of the Mechanical Properties on the Steels Used in Metallic Structures

Stability and Ductility of Steel Structures (SDSS'99) ◽

10.1016/b978-008043016-4/50005-2 ◽

1999 ◽

pp. 35-40

Author(s):

V. Safta ◽

T. Fleser

Keyword(s):

Mechanical Properties ◽

Plastic Deformation ◽

Cold Plastic Deformation ◽

Metallic Structures

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Reaction cross section calculations via second beta decay using the activation method for the p-process

Canadian Journal of Physics ◽

10.1139/cjp-2018-0829 ◽

2019 ◽

Vol 97 (11) ◽

pp. 1206-1209

Author(s):

Ezgi Tantoğlu ◽

Nalan Özkan ◽

R. Taygun Güray

Keyword(s):

Beta Decay ◽

Cross Section ◽

Cross Sections ◽

Half Life ◽

Reaction Cross Section ◽

Experimental Studies ◽

Reaction Cross ◽

Activation Method ◽

Alternative Method ◽

The Cross

There are 35 proton-rich isotopes between 74Se and 196Hg that cannot be synthesized through neutron captures and β− decays (s- and r-processes). A third process is therefore required for the production of these nuclei, the so-called p-process. The abundance and the origin of the p-nuclei are still not fully understood even though significant experimental and theoretical efforts in astrophysical modeling have been expended in the last two decades. The experimental studies with the activation method to measure cross sections of the relevant reactions have some limitations: the reaction product must be radioactive, should have an appropriate half-life, and its decay should be followed by proper γ-radiations. If the cross section cannot be calculated with the radiation followed by the first beta decay of the product, it can be measured using the second beta decay as an alternative method. In this study, the method and candidate reactions for the cross-section measurements via the second beta decay of the reaction product using the activation method are discussed.

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