Journal ArticleDOI
Stress corrosion cracking of maraging steel weldments
K. Y. Sastry,Ramaswamy Narayanan,C. R. Shamantha,S. Sundaresan,S.K. Seshadri,V.M. Radhakrishnan,K. J. L. Iyer,S. Sundararajan +7 more
TLDR
In this article, the authors investigated the stress corrosion characteristics of 18 wt-%Ni (MDN-250) maraging steel and its weldments made under different welding conditions.Abstract:
The stress corrosion characteristics of 18 wt-%Ni (MDN-250) maraging steel and its weldments made under different welding conditions have been investigated. The threshold stress intensity factor K ISCC in stress corrosion conditions has been determined in 3.5 wt-%NaCl environment for the base metal and weldments. The fractured surfaces were analysed to study the types of fracture during stress corrosion cracking in base and weld metals. Fracture toughness tests were carried out and the results obtained from these tests have been compared with K ISCC values.read more
Citations
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Journal ArticleDOI
Effect of 4-(N,N-diethylamino)benzaldehyde thiosemicarbazone on the corrosion of aged 18 Ni 250 grade maraging steel in phosphoric acid solution
TL;DR: In this paper, 4-(N,N-diethylamino)benzaldehyde thiosemicarbazone (DEABT) was studied for its corrosion inhibition property on the corrosion of aged 18 Ni 250 grade maraging steel in 0.67 M phosphoric acid at 30-50°C by potentiodynamic polarization, EIS and weight loss techniques.
Journal ArticleDOI
3,4-Dimethoxybenzaldehydethiosemicarbazone as corrosion inhibitor for aged 18 Ni 250 grade maraging steel in 0.5 M sulfuric acid
TL;DR: In this article, the corrosion inhibition of the aged 18 Ni 250 grade maraging steel in 0.5 M sulfuric acid by 3,4-dimethoxybenzaldehydethiosemicarbazone (DMBTSC) has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques.
Journal ArticleDOI
Friction stir welding: An alternative to fusion welding for better stress corrosion cracking resistance of maraging steel
TL;DR: In this article, a maraging steel, an ultra high strength steel, is welded using FSW process and it was observed that FSW joints demonstrated higher resistance to stress corrosion cracking (SCC) compared to both, base metal and gas tungsten arc weldments.
Journal ArticleDOI
Effect of cathodic polarisation on stress corrosion cracking behaviour of a Ni(Fe, Al)-maraging steel in artificial seawater
TL;DR: In this article, the effect of cathodic polarisation on stress corrosion cracking (SCC) behavior of peak-aged Ni(Fe, Al)-maraging steel in artificial seawater was investigated.
Journal ArticleDOI
Austenite reversion in 18% Ni maraging steel and its weldments
TL;DR: In this paper, a review of the published work on austenite reversion and its effects on properties and performance, covering both base metal and weld joints, is presented, where the authors analyze the impact of the reversion on the performance of the weld joints.
References
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Journal ArticleDOI
Stress Corrosion Cracking in 18% Ni (250) Maraging Steel
TL;DR: The susceptibility of 18% Ni (250) maraging steel to stress corrosion cracking in 3.5% NaCl solution has been investigated in this paper, where Metallographic and fractographic examinations show distinct diff...
Journal ArticleDOI
Tensile properties and fracture toughness of 18Ni (250 grade) maraging steel weldments
C. R. Shamantha,Ramaswamy Narayanan,K. J. L. Iyer,V.M. Radhakrishnan,S.K. Seshadri,S. Sundararajan,S. Sundaresan +6 more
TL;DR: Gas tungsten arc welding was performed on 18Ni (250 grade) maraging steel sheet using two different filler wires: one of the same composition as the base material and the other containing more cobalt and aluminium and less molybdenum and titanium as mentioned in this paper.
Journal ArticleDOI
Electrochemical properties of protective coatings on maraging steel
TL;DR: In this article, the authors compared the oxides formed on 250 maraging steel in steam at elevated temperatures to standard phosphating treatment and found that the advantage of these oxides over phosphating was due to the austenitic sub-layer.
Journal ArticleDOI
Hydrogen embrittlement of a Ti-strengthened 250 grade maraging steel
TL;DR: In this article, the effects of strain rate and environmental hydrogen concentration on the tensile properties of various aged T-250 specimens were investigated, and the most resistant to hydrogen embrittlement of the underaged specimens are characterized by a more brittle fracture appearance, that is, intergranular fracture, under a low strain rate or in the gaseous hydrogen environment.
Journal ArticleDOI
Corrosion of 18Ni 180 and 18Ni 200 Maraging Steels in Chloride Environments
TL;DR: In this paper, 18Ni 180 and 18Ni 200 maraging steels have shown high resistance to stress corrosion cracking in sea water and 3-1/2% NaCl.
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