Aging time influence on the mechanical properties of aluminum alloy (6061)

Equal Channel Angular Pressing (ECAP) is one of Severe Plastic Deformation (SPD) methods used to produce ultra-fine grains. In this study, aluminum alloy 6061 in a rod shape as a result from casting process was used in the experiment. The rod samples were then subjected to ECAP, up to 3 passes, through Bc route. The die channel angle of the ECAP is 1200. The changes in the microstructure and mechanical properties of the samples deformed by 1-pass, 2-pass, and 3-pass of ECAP were investigated. The results show that as number of ECAP passes increase, the applied strain accumulated in the samples also increases and the grains change from equiaxed to elongated structure. The hardness is proportional to the number of ECAP passes, and the highest value is 107 HV for 3 passes with strain value of 2.0.

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Effect of aging time at low aging temperatures on the corrosion of aluminum alloy 6061

Corrosion Science ◽

10.1016/j.corsci.2011.09.011 ◽

2012 ◽

Vol 54 ◽

pp. 167-173 ◽

Cited By ~ 60

Author(s):

Kamal El-Menshawy ◽

Abdel-Wahab A. El-Sayed ◽

Mohammed E. El-Bedawy ◽

Hafez A. Ahmed ◽

Saed M. El-Raghy

Keyword(s):

Aluminum Alloy ◽

Aging Time ◽

Aluminum Alloy 6061 ◽

Alloy 6061

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Evaluation of Weldability of Titanium Alloy Ti-6Al-4V and Aluminum Alloy 6061 Produced by Electron Beam Welding

Materials Science Forum ◽

10.4028/www.scientific.net/msf.879.714 ◽

2016 ◽

Vol 879 ◽

pp. 714-719 ◽

Cited By ~ 1

Author(s):

Petr Havlík ◽

Jan Kouřil ◽

Rudolf Foret ◽

Ivo Dlouhy ◽

Norbert Enzinger ◽

...

Keyword(s):

Mechanical Properties ◽

Titanium Alloy ◽

Aluminum Alloy ◽

Electron Beam ◽

Electron Beam Welding ◽

Incident Beam ◽

Intermetallic Phases ◽

Ambient Atmosphere ◽

Aluminum Alloy 6061 ◽

Alloy 6061

Aluminum and titanium alloys are among the most important and the most frequently used construction materials due to their physical and mechanical properties. Especially in the automotive and aerospace industry these materials allow to reduce the weight of structure which leads to reducing fuel consumption and environment pollution. These materials are often used together which leads to problems with junction between these materials. In addition to the mechanical joints, there is an effort to produce quality welded joints. Series of works focused to welding of Al/Ti joints by conventional and nonconventional welding methods were published [1, 4, 5, 6, 7]. By reduction of dimensions of molten material is possible to reduce the amount of emerging intermetallic phases and welding defects. Electron beam welding appears as suitable method for welding Al/Ti joints because it allows production of very narrow welds. The benefit is also necessity to perform electron beam welding in vacuum which is required for decrease energy losses of incident beam and simultaneously prevents reaction of molten metal with ambient atmosphere. This paper is focused to determine of appropriate parameters for electron beam welding of heterogeneous welds of titanium alloy Ti-6Al-4V and aluminum alloy 6061. Metallographic evaluation, analysis of chemical and phase composition were performed on the test welds for purpose to describing present phases. On the selected welds was evaluated the influence of intermetallic phases on the mechanical properties. The obtained results will be used for further experiments focused to optimize the process of electron beam welding of Al/Ti alloys.

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