The roles of macrosegregation and of dendritic array spacings on the electrochemical behavior of an Al–4.5wt.% Cu alloy

2007 ◽  
Vol 52 (9) ◽  
pp. 3265-3273 ◽  
Author(s):  
W.R. Osório ◽  
J.E. Spinelli ◽  
I.L. Ferreira ◽  
A. Garcia
Keyword(s):  
Electrochemical Behavior ◽  
Cu Alloy ◽  
Dendritic Array

Electrochemical behavior and biocompatibility of Ti-Fe-Cu alloy with high strength and ductility

2017 ◽  
Vol 707 ◽  
pp. 291-297 ◽  
Author(s):  
V.Yu. Zadorozhnyy ◽  
X. Shi ◽  
D.S. Kozak ◽  
T. Wada ◽  
J.Q. Wang ◽  
...  
Keyword(s):  
Electrochemical Behavior ◽  
High Strength ◽  
Cu Alloy ◽  
Strength And Ductility

Electrochemical Behavior of 80% Sn-Cu Alloy in Some Carboxylic Acids and Buffer Solutions

CORROSION ◽  
1976 ◽  
Vol 32 (1) ◽  
pp. 30-34 ◽  
Author(s):  
M. S. ABDELAAL ◽  
I. M. ISSA ◽  
M. M. SELEEM
Keyword(s):  
Carboxylic Acids ◽  
Electrochemical Behavior ◽  
Buffer Solutions ◽  
Cu Alloy

scholarly journals Electrochemical Behavior of Annealed Soft-Magnetic Fe–Si–B–P–Cu Alloy

2013 ◽  
Vol 54 (4) ◽  
pp. 561-565 ◽  
Author(s):  
Zhenhua Dan ◽  
Yasunobu Yamada ◽  
Yan Zhang ◽  
Masahiko Nishijima ◽  
Nobuyoshi Hara ◽  
...  
Keyword(s):  
Electrochemical Behavior ◽  
Soft Magnetic ◽  
Cu Alloy

Effect of aging on corrosion property, electrochemical behavior and microstructure of AlZnMgCu alloy

2013 ◽  
Vol 66 (1) ◽  
pp. 54-60 ◽  
Author(s):  
L. L. Wei ◽  
Q. L. Pan ◽  
L. Feng ◽  
Y. L. Wang ◽  
H. F. Huang
Keyword(s):  
Electrochemical Behavior ◽  
Corrosion Property ◽  
Cu Alloy

Influence of dual-RRA temper on the exfoliation corrosion and electrochemical behavior of Al-Zn-Mg-Cu alloy

2011 ◽  
Vol 64 (4) ◽  
pp. 284-289 ◽  
Author(s):  
G.-S. Peng ◽  
K.-H. Chen ◽  
S.-Y. Chen ◽  
H.-C. Fang
Keyword(s):  
Electrochemical Behavior ◽  
Exfoliation Corrosion ◽  
Cu Alloy

scholarly journals Electrochemical Behavior of Magnetron-Sputtered Al–Cu Alloy Films in Sulfate Solutions

2007 ◽  
Vol 154 (6) ◽  
pp. C286 ◽  
Author(s):  
J. Idrac ◽  
Ch. Blanc ◽  
Y. Kihn ◽  
M. C. Lafont ◽  
G. Mankowski ◽  
...  
Keyword(s):  
Electrochemical Behavior ◽  
Alloy Films ◽  
Cu Alloy ◽  
Sulfate Solutions

Plastic deformation of θ ' in Al-4%Cu alloy

1978 ◽  
Vol 36 (1) ◽  
pp. 576-577
Author(s):  
Shrikant P. Bhat
Keyword(s):  
Deformation Behavior ◽  
Room Temperature ◽  
Electron Microscopic Observation ◽  
Bulk Alloy ◽  
Electron Microscopic ◽  
Cu Alloy ◽  
Cu Alloys ◽  
Orowan Mechanism ◽  
The Subject ◽  
Cyclic Straining

deformation behavior of Al-Cu alloys aged to contain θ ' has been the subject of many investigations (e.g., Ref. 1-5). Since θ ' is strong and hard, dislocations bypass θ ' plates (Orowan mechanism) at low strains. However, at high strains the partially coherent θ ' plates are probably sheared, although the mechanism is complex, depending on the form of deformation. Particularly, the cyclic straining of the bulk alloy is known to produce gross bends and twists of θ '. However, no detailed investigation of the deformation of θ ' has yet been reported; moreover, Calabrese and Laird interpreted the deformation of θ ' as largely being elastic.During an investigation of high temperature cyclic deformation, the detailed electron-microscopic observation revealed that, under reversed straining conditions, θ ' particles are severely distorted--bent and twisted depending on the local matrix constraint. A typical electronmicrograph, showing the twist is shown in Fig. 1. In order to establish whether the deformation is elastic or plastic, a sample from a specimen cycled at room temperature was heated inside the microscope and the results are presented in a series of micrographs (Fig. 2a-e).

Deviations from Ideal Decagonal Symmetry in Electron Diffraction Patterns of the “Decagonal” Phase in the Al-Co-Cu Alloy System

1991 ◽  
Vol 49 ◽  
pp. 914-915
Author(s):  
Atul S. Ramani ◽  
Earle R. Ryba ◽  
Paul R. Howell
Keyword(s):  
Electron Microscope ◽  
Alloy System ◽  
Nominal Composition ◽  
Dimensional Lattice ◽  
3 Dimensional ◽  
Decagonal Phase ◽  
Cu Alloy ◽  
Transmission Electron ◽  
Lattice Periodicity ◽  
Diffraction Patterns

The “decagonal” phase in the Al-Co-Cu system of nominal composition Al65CO15Cu20 first discovered by He et al. is especially suitable as a topic of investigation since it has been claimed that it is thermodynamically stable and is reported to be periodic in the dimension perpendicular to the plane of quasiperiodic 10-fold symmetry. It can thus be expected that it is an important link between fully periodic and fully quasiperiodic phases. In the present paper, we report important findings of our transmission electron microscope (TEM) study that concern deviations from ideal decagonal symmetry of selected area diffraction patterns (SADPs) obtained from several “decagonal” phase crystals and also observation of a lattice of main reflections on the 10-fold and 2-fold SADPs that implies complete 3-dimensional lattice periodicity and the fundamentally incommensurate nature of the “decagonal” phase. We also present diffraction evidence for a new transition phase that can be classified as being one-dimensionally quasiperiodic if the lattice of main reflections is ignored.

Influence of ion-milling on the T2 phase in Al-2.5%Li-2.5%Cu alloy

1989 ◽  
Vol 47 ◽  
pp. 288-289
Author(s):  
J. R. Reed ◽  
D. J. Michel ◽  
P. R. Howell
Keyword(s):  
Thin Foil ◽  
Icosahedral Symmetry ◽  
Ion Milling ◽  
Cu Alloy ◽  
Thin Foils ◽  
Heat Treated ◽  
Aluminum Solid Solution ◽  
In Situ Heating ◽  
The Stability

The Al6Li3Cu (T2) phase, which exhibits five-fold or icosahedral symmetry, forms through solid state precipitation in dilute Al-Li-Cu alloys. Recent studies have reported that the T2 phase transforms either during TEM examination of thin foils or following ion-milling of thin foil specimens. Related studies have shown that T2 phase transforms to a microcrystalline array of the TB phase and a dilute aluminum solid solution during in-situ heating in the TEM. The purpose of this paper is to report results from an investigation of the influence of ion-milling on the stability of the T2 phase in dilute Al-Li-Cu alloy.The 3-mm diameter TEM disc specimens were prepared from a specially melted Al-2.5%Li-2.5%Cu alloy produced by conventional procedures. The TEM specimens were solution heat treated 1 h at 550°C and aged 1000 h at 190°C in air to develop the microstructure. The disc specimens were electropolished to achieve electron transparency using a 20:80 (vol. percent) nitric acid: methanol solution at -60°C.

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