The influences of macrosegregation, intermetallic particles, and dendritic spacing on the electrochemical behavior of hypoeutectic Al-Cu alloys

2007 ◽  
Vol 70 (11) ◽  
pp. 928-937 ◽  
Author(s):  
Wislei R. Osório ◽  
José E. Spinelli ◽  
Alexandre P. Boeira ◽  
Célia M. Freire ◽  
Amauri Garcia
Keyword(s):  
Electrochemical Behavior ◽  
Dendritic Spacing ◽  
Cu Alloys ◽  
Intermetallic Particles

Electrochemical Behavior of Al-1wt.%Cu and Al-4.5wt.%Cu Alloys

2014 ◽  
pp. 301-308
Author(s):  
Alejandra S. Roman ◽  
Claudia M. Méndez ◽  
Carlos E. Schvezov ◽  
Alicia E. Ares
Keyword(s):  
Electrochemical Behavior ◽  
Cu Alloys

scholarly journals Al-Cu ALLOYS: SOLIDIFICATION STRUCTURES AND ELECTROCHEMICAL BEHAVIOR

Anales AFA ◽  
2014 ◽  
Vol 25 (2) ◽  
pp. 57-62 ◽  
Author(s):  
A. S. Román ◽  
C. M. Mendez ◽  
A. E. Ares
Keyword(s):  
Electrochemical Behavior ◽  
Cu Alloys

Electrochemical Behavior of Al-1wt.%Cu and Al-4.5wt.%Cu Alloys

2014 ◽  
pp. 301-308 ◽  
Author(s):  
Alejandra S. Roman ◽  
Claudia M. Méndez ◽  
Carlos E. Schvezov ◽  
Alicia E. Ares
Keyword(s):  
Electrochemical Behavior ◽  
Cu Alloys

Electrochemical Behavior of an Al-Fe-Ni Alloy Affected by Nano-Sized Intermetallic Particles

CORROSION ◽  
10.5006/1356 ◽  
2015 ◽  
Vol 71 (4) ◽  
pp. 510-522 ◽  
Author(s):  
Wislei R. Osório ◽  
Manuel V. Canté ◽  
Crystopher Brito ◽  
Emmanuelle S. Freitas ◽  
Amauri Garcia
Keyword(s):  
Electrochemical Behavior ◽  
Intermetallic Particles ◽  
Ni Alloy

Influence of Microstructure on the Fracture Mechanism and Mechanical Behavior in 7010 and 7150 Alloys

2006 ◽  
Vol 324-325 ◽  
pp. 463-466
Author(s):  
Xi Gang Fan ◽  
Da Ming Jiang ◽  
Chang Li Wang ◽  
Yong Liang Guo ◽  
Xing Qiu Liu
Keyword(s):  
Fracture Toughness ◽  
Yield Strength ◽  
Fracture Behavior ◽  
Compact Tension ◽  
Transgranular Fracture ◽  
Plane Strain Fracture Toughness ◽  
Ageing Treatment ◽  
Cu Alloys ◽  
Intermetallic Particles ◽  
Strain Fracture

The effect of ageing treatment and coarse intermetallic particles on the compromise between the toughness and the yield strength of 7010 and 7150 aluminum alloys (Al-Zn-Mg-Cu alloys) are investigated. Plane-strain fracture toughness tests were performed on the compact-tension specimens of L-T orientation. The fracture toughness of 7010 alloy was higher than that of 7150 alloy at the same ageing treatment. The 7150 alloy contain a greater amount of coarse Cu-bearing particles, which deteriorate the fracture behavior and decrease the ageing hardening ability of the alloy. The toughness of the both alloys increased greatly for the overaged condition as compared to that for the T6 condition. Two dominant mechanisms of failure occur: microvoid-induced transgranular fracture and intergranular fracture modes, and the former becomes more important in the overaged ageing conditions.

Corrosion Resistance of Al-Cu Alloys in Function of the Microstructure

2014 ◽  
Vol 783-786 ◽  
pp. 100-107 ◽  
Author(s):  
Alejandra Silvina Román ◽  
Claudia Marcela Méndez ◽  
Alicia Esther Ares
Keyword(s):  
Electrochemical Impedance ◽  
Solidification Process ◽  
Directionally Solidified ◽  
Dendritic Spacing ◽  
Cu Alloys ◽  
Al2cu Phase ◽  
Electrochemical Parameters ◽  
Strength Alloy ◽  
Columnar To Equiaxed Transition ◽  
Set Up

Aluminum and its alloys are characterized by low density, high electrical and thermal conductivity, and good resistance to corrosion in certain media such as air. The mechanical strength alloy is achieved. The objective of the present research consist on studying the type of structure (columnar, equiaxed or with columnar to equiaxed transition, CET) using parameters of the solidification process and electrochemical parameters in Al, Cu and Al-Cu alloys with different concentrations. In order to obtain columnar, equiaxed and CET structures, the alloys were directionally solidified upwards in an experimental set up with a set of thermocouples in the samples which permit to determine the time dependent profiles during the process. The electrochemical studies of the samples were realized by using an electrochemical impedance spectroscopy (EIS) technique and potentio-dynamic polarization curves immersed in 3% NaCl solution at room temperature. In general, we observed that the susceptibility to corrosion of the different structures depends on the size of the secondary dendritic spacing and the proportion of Al2Cu phase and Al-rich phase.

Electrochemical behavior of centrifuged cast and heat treated Ti–Cu alloys for medical applications

2010 ◽  
Vol 55 (3) ◽  
pp. 759-770 ◽  
Author(s):  
Wislei R. Osório ◽  
Alessandra Cremasco ◽  
Protásio N. Andrade ◽  
Amauri Garcia ◽  
Rubens Caram
Keyword(s):  
Electrochemical Behavior ◽  
Medical Applications ◽  
Cu Alloys ◽  
Heat Treated
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