scholarly journals The Behaviour of Tribocorrosion on EH47 High-Strength Ship Hull Steel in a 3.5% NaCl Solution

2019 ◽  
pp. 11065-11080
Author(s):  
Hongmei Zhang ◽  
Keyword(s):  
High Strength ◽  
Ship Hull ◽  
Nacl Solution ◽  
Hull Steel

Effect of large load on the wear and corrosion behavior of high-strength EH47 hull steel in 3.5wt% NaCl solution with sand

2020 ◽  
Vol 27 (11) ◽  
pp. 1525-1535
Author(s):  
Hong-mei Zhang ◽  
Yan Li ◽  
Ling Yan ◽  
Fang-fang Ai ◽  
Yang-yang Zhu ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
High Strength ◽  
Nacl Solution ◽  
Large Load ◽  
Wear And Corrosion ◽  
Hull Steel

Pitting behaviors of low-alloy high strength steel in neutral 3.5 wt% NaCl solution based on in situ observations

2020 ◽  
Vol 863 ◽  
pp. 114056
Author(s):  
Hongyi Su ◽  
Shicheng Wei ◽  
Yi Liang ◽  
Yujiang Wang ◽  
Bo Wang ◽  
...  
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Nacl Solution ◽  
In Situ Observations

Recommended fracture toughness for ship hull steel and weld

1995 ◽  
Vol 8 (4) ◽  
pp. 345-357 ◽  
Author(s):  
J.D.G. Sumpter ◽  
A.J. Caudrey
Keyword(s):  
Fracture Toughness ◽  
Ship Hull ◽  
Hull Steel

Microstructure and corrosion behaviour of precipitation hardened and thermo-mechanical treated high strength Al-12Zn-3Mg-2.5Cu alloy

2018 ◽  
Vol 65 (1) ◽  
pp. 79-86 ◽  
Author(s):  
V.V. Ravikumar ◽  
S. Kumaran
Keyword(s):  
Corrosion Resistance ◽  
Precipitation Hardening ◽  
Corrosion Behaviour ◽  
Cast Alloy ◽  
High Strength ◽  
Structural Features ◽  
Boundary Region ◽  
Nacl Solution ◽  
Content Type ◽  
Fine Grained Structure

Purpose The purpose of this paper is to study the corrosion behaviour of Al-12Zn-3Mg-2.5Cu alloy by cast, precipitation hardening and non-isothermal step rolling cum cold/cryo rolling (−80 and −196°C) in 3.5 per cent NaCl solution. Design/methodology/approach Aluminium alloy with high alloying concentration (Zn: 12 per cent, Mg: 3 per cent, Cu: 2.5 per cent) was prepared by squeeze casting method with controlled process parameters. The cast alloy was solution treated at 450°C for 24 h and aged at 120°C with varying time intervals. Initially, the alloy also underwent non-isothermal step rolling from 6 mm to 3 mm at 400-100°C at the step of 100ºC with 15% reduction in thickness. Non-isothermal rolled alloy (3 mm thickness) was the starting material for further rolling at three different temperatures, such as room temperature, −80 and −190°C with 85 per cent reduction. Microstructural evolution during precipitation and thermo-mechanical processing was studied with the help of optical microscopy and electron microscopy. A potentio-dynamic polarization study was performed to evaluate the corrosion behaviour of Al-12Zn-3Mg-2.5Cu alloy processed in different conditions in 3.5 per cent NaCl solution. Findings There is a distinct evidence that the alloy exhibits varying corrosion resistance by changing its structural features. In fact, the alloy with ultra-fine grained structure exhibits good corrosion resistance than that of alloy in cast. This is attributed to a greater grain boundary region with high dislocation density, and plastic strain adversely affects the corrosion resistance. Originality/value The results obtained by this investigation help in understanding the effect of precipitation hardening and non-isothermal step rolling cum cold/cryo rolling (−80 and −196°C) on corrosion behaviour.

Influence of Heat Treatment on the Failure Mode of High Strength Steel in Aggressive Environments

1982 ◽  
Vol 40 ◽  
pp. 464-465
Author(s):  
R. Padmanabhan ◽  
W. E. Wood
Keyword(s):  
Heat Treatment ◽  
Stress Intensity ◽  
Failure Mode ◽  
Applied Stress ◽  
Fracture Mode ◽  
High Strength Steel ◽  
High Strength ◽  
Nacl Solution ◽  
300M Steel

The predominant fracture mode during hydrogen assisted environmental failure of 300M steel is intergranular. However, limited attempts have been made to study the failure mode, both as a function of applied stress intensity and as a function of heat treatment. In this investigation, studies were conducted for 300M steel specimens subjected to load in a 3.5% NaCl solution.

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