Effect of in service weld repair on the performance of CrMo steel steam pipelines

Fuentes, Alfonso; Alcântara, Nelson Guedes de; Rodríguez, Sergio Haro; Ibarra, Alejandro López

doi:10.1590/s1516-14392006000200008

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…Good performance of the 34CrMo4 steel at high pressures enables its application to gas cylinders. The steel is primarily produced as blanks -wire, universal mill plates, forgings, seamless tubes, hot-rolled billets, rolled bars, hot-rolled strips or steel for refining [1][2][3][4]. The heat-treatable steel could be in different thermal treated stages, as austenitized and quenched or austenitized, quenched and tempered.…”

Section: Introductionmentioning

confidence: 99%

Comparative strain analysis of 34CrMo4 steel and Inconel 738LC

Štamborská¹,

Losertová²,

Konečná³

et al. 2021

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The comparative analysis of mechanical properties using a digital image correlation by Vic 2D software was performed for two types of high-strength materials. The strain analysis during tensile tests was carried out on the cylinder tensile specimens of 34CrMo4 steel and IN 738LC superalloy. Both materials showed similar strength but different ductility. While the 34CrMo4 steel showed typical necking of tensile specimens with ductile fracture surfaces, cracking of the IN 738LC became without necking, and the fracture morphology displayed mixed feature with ductile dimples or quasi-cleavage areas and cracked carbides. Microhardness measurements completed metallographic and fractographic studies of tensile samples.

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Section: Introductionmentioning

confidence: 99%

Comparative strain analysis of 34CrMo4 steel and Inconel 738LC

Štamborská¹,

Losertová²,

Konečná³

et al. 2021

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“…Common techniques in use today to repair damages in large components are welding 15 and bonding 16 . Welding entails some disadvantages; in particular, it causes high tensile residual stresses and produces alterations of the base material in the repaired zone.…”

Section: Introductionmentioning

confidence: 99%

Repairing of an Engine Block Through the Cold Gas Dynamic Spray Technology

Astarita¹,

Coticelli²,

Prisco³

2016

Mat. Res.

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In the modern automotive industry, the maintenance of the vehicle during its life cycle is increasing in importance due to both economical and environmental considerations. A new frontier is the reparation of large parts, originally made by fusion, by the addition of material. The standard technique in the field is the use of TIG welding, but in the last few years Cold Dynamic Gas Spray (CDGS) has started to show many promises in supplanting TIG repairs. The main advantage of CDGS is the absence of thermal stresses in the repaired zone with the elimination of thermal distension treatment of the part. In this paper we study the use of CDGS to repair wear damage on a commercial aluminium engine block in comparison with the standard repair procedure with TIG. The result obtained shows that CDGS is an effective technology for industrial-level repair.

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“…Molybdenum further increases the steel resistance against tempering brittleness. The interaction of molybdenum and chromium to reduce energy on grain boundaries is also not negligible [6][7][8][9][10]. In experimental analysis of plastic deformation on the surface of components, it is advantageous to use contactless sensing methods, allowing to obtain strain fields in pre-selected areas.…”

Section: Introductionmentioning

confidence: 99%

STRESS ANALYSIS IN CYLINDRICAL SPECIMENS MADE FROM 34CrMo4 USING DIC

Štamborská¹,

Losertová²,

Mareš³

et al. 2014

Acta Metall Slovaca

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The stress analysis using digital image correlation was carried out on cylindrical tensile specimens made from low carbon 34CrMo4 steel. The results obtained by conventional tensile test were compared with the results obtained by digital image correlation. The true stresses were evaluated from the compiled true stress-strain diagrams and compared with the engineering stresses. The average values of the yield stress and tensile strength reached of 945±15 MPa and 1039±5 MPa, respectively. Thus, parameters obtained from tensile test were plotted in the engineering diagrams that represent often starting diagrams for engineering practice. Based on results of digital image correlation the possibility of construction of the true stress-strain diagrams is discussed with regard to more exact values of stress for use in practice. The evaluation and compilation of the true stress-strain diagrams were carried out by means of image correlation software Vic 2D.

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Effect of in service weld repair on the performance of CrMo steel steam pipelines

Cited by 4 publications

References 5 publications

Comparative strain analysis of 34CrMo4 steel and Inconel 738LC

Comparative strain analysis of 34CrMo4 steel and Inconel 738LC

Repairing of an Engine Block Through the Cold Gas Dynamic Spray Technology

STRESS ANALYSIS IN CYLINDRICAL SPECIMENS MADE FROM 34CrMo4 USING DIC

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