Effects of long-term natural aging on the altered surface layer on an Al-Zn-Mg-Cu alloy and on corrosion properties

2018 ◽  
Vol 266 ◽  
pp. 34-42 ◽  
Author(s):  
Shan-Shan Wang ◽  
Jian-Tang Jiang ◽  
Guo-Hua Fan ◽  
G.S. Frankel ◽  
Liang Zhen
Keyword(s):  
Surface Layer ◽  
Natural Aging ◽  
Corrosion Properties ◽  
Cu Alloy ◽  
Altered Surface ◽  
Altered Surface Layer

Influence of the Altered Surface Layer on the Corrosion of AA5083

2015 ◽  
Vol 162 (6) ◽  
pp. C209-C218 ◽  
Author(s):  
Jinwook Seong ◽  
Fan Yang ◽  
Frank Scheltens ◽  
G. S. Frankel ◽  
N. Sridhar
Keyword(s):  
Surface Layer ◽  
Altered Surface ◽  
Altered Surface Layer

Dynamics of altered surface layer formation on dissolving silicates

2017 ◽  
Vol 209 ◽  
pp. 51-69 ◽  
Author(s):  
Damien Daval ◽  
Sylvain Bernard ◽  
Laurent Rémusat ◽  
Bastien Wild ◽  
François Guyot ◽  
...  
Keyword(s):  
Surface Layer ◽  
Layer Formation ◽  
Altered Surface ◽  
Altered Surface Layer ◽  
Surface Layer Formation

Structure and properties of rails after extremely long-term operation

2020 ◽  
pp. 30-39 ◽  
Author(s):  
Yu. F. Ivanov ◽  
V. E. Gromov ◽  
V. E. Kormyshev ◽  
A. M. Glezer
Keyword(s):  
Surface Layer ◽  
Lattice Parameter ◽  
Crystal Lattice Parameter ◽  
Subgrain Structure ◽  
Structure And Properties ◽  
Term Operation ◽  
Head Section ◽  
Structure Phase ◽  
Defective Surface

The paper reveals regularities and mechanisms of structure-phase states and properties formation of of differentially hardened 100-m rails of DT 350 category after the passed tonnage of 1411 mln. tons brutto. The formation of highly defective surface layer with nanosize (40–50 nm) grain-subgrain structure of pearlite colonies and submicrocrystal (150–250 nm) structure grains with structure free ferrite is detected. The change of hardness, microhardness, crystal lattice parameter, microdistorsion level, scalar and excess dislocation density on the rails head section are analyzed. The possible mechanisms of cementite plates’ transformation at extremely long-term operation are discussed.

Assessing the Surface-Layer Stability over China Using Long-Term Wind-Tower Network Observations

2021 ◽  
Author(s):  
Jian Li ◽  
Jianping Guo ◽  
Hui Xu ◽  
Jing Li ◽  
Yanmin Lv
Keyword(s):  
Surface Layer

scholarly journals Annealing of Al-Zn-Mg-Cu Alloy at High Pressures: Evolution of Microstructure and the Corrosion Behavior

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2076
Author(s):  
Chuanjun Suo ◽  
Pan Ma ◽  
Yandong Jia ◽  
Xiao Liu ◽  
Xuerong Shi ◽  
...  
Keyword(s):  
High Pressure ◽  
High Pressures ◽  
Electrochemical Impedance ◽  
Extrusion Direction ◽  
Corrosion Properties ◽  
Cu Alloy ◽  
The Matrix ◽  
Annealing Pressure ◽  
Corrosion Pits ◽  
Evolution Of Microstructure

Extruded Al-Zn-Mg-Cu alloy samples with grains aligned parallel to the extrusion direction were subjected to high-pressure annealing. The effects of annealing pressure on the microstructure, hardness, and corrosion properties (evaluated using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS)) were investigated. Phase analysis showed the presence of MgZn2 and α-Al phases, the MgZn2 phase dissolved into the matrix, and its amount decreased with the increasing annealing pressure. The recrystallization was inhibited, and the grains were refined, leading to an increase in the Vickers hardness with increasing the annealing pressure. The corrosion resistance was improved after high-pressure treatment, and a stable passivation layer was observed. Meanwhile, the number of corrosion pits and the width of corrosion cracks decreased in the high-pressure annealed samples.

Effect of age-forming on corrosion properties of an AlZnMgCu alloy

2013 ◽  
Vol 65 (7) ◽  
pp. 670-677 ◽  
Author(s):  
J. F. Chen ◽  
G. S. Frankel ◽  
J. T. Jiang ◽  
W. Z. Shao ◽  
L. Zhen
Keyword(s):  
Corrosion Properties ◽  
Cu Alloy ◽  
Effect Of Age
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