Cracking of High-Strength Steel Welded Joints

Pańcikiewicz, Krzysztof; Zielińska‐Lipiec, A.; Tasak, E.

doi:10.2478/adms-2013-0013

Cited by 9 publications

(11 citation statements)

References 10 publications

(11 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ability to carry out a convenient selection of wall thickness is important for many industries, where high-strength steels are used, e.g. in the power industry [8] or for the construction of gas-transmission pipe lines [9]. For materials used in these areas, often strict requirements are applied to obtain the appropriate maximum hardness in the area of the welded joint.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of Microstructure and Selected Mechanical Properties of Laser Beam Welded S690QL High-Strength Steel

Tuz

2018

Advances in Materials Science

View full text Add to dashboard Cite

The paper presents results of microstructure and mechanical properties investigation of laser beam welded high-strength steel. Material for test was non-alloyed steel with yield strength of 690 MPa after quenching and tempering in delivery condition. Research carried out on the butt-welded joints shows fine-grain martensitic-bainitic structure of base metal and in the weld. Investigations of mechanical properties revealed the softened zone in HAZ where the hardness decrease without microstructural changes was observed. Moreover, an influence of softened zone and HAZ width on impact strength was observed where the occurrence of lower hardness led to fracture path deviation phenomenon.

show abstract

Section: Introductionmentioning

confidence: 99%

“…For materials used in these areas, often strict requirements are applied to obtain the appropriate maximum hardness in the area of the welded joint. In the case of non-alloy heattreated structural steels, it is crucial that the hardness does not decrease due to the heat input during welding [5,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Microstructure and Selected Mechanical Properties of Laser Beam Welded S690QL High-Strength Steel

Tuz

2018

Advances in Materials Science

View full text Add to dashboard Cite

show abstract

“…From a metallurgical point of view, the technology used for pipelines is more complex than the conventional technology based on one type of electrode. One important aspect in this field is controlling the hydrogen content in the joint, which is one of the reasons for the increased tendency of cold-crack formation in welded joints [12][13][14][15][16][17][18][19][20][21]. The presence of a critical amount of h ydrogen in steel weldments may determine its weldability.…”

Section: Introductionmentioning

confidence: 99%

Diffusible Hydrogen Content in Deposited Metal of Multilayer Welded Joints

Fydrych

Świerczyńska

2014

mafe

View full text Add to dashboard Cite

Diffusible hydrogen content in the deposited metal of multilayer welded jointsZawartość wodoru dyfundującego w stopiwie wielościegowych złączy spawanych Abstract This article describes the manufacturing technology of multilayer joints in terms of controlling the diffusible hydrogen content. The diffusible hydrogen content in deposited metal for multilayer welded joints made of covered rutile electrodes or covered cellulosic and basic electrodes was determined. It was found that, after four beads, the diffusible hydrogen content decreases from 36 m l/100 g to 18 ml/100 g in the ca se of the first technology, and about 40 ml/100 g to a level of 12 ml/100 g in the second. The explanation of the mechanisms responsible for this phenomenon and direction s for further study have been proposed. Keywords: diff usible hydrogen, manual metal arc welding, rutile electrodes, cellulosic electrodes, basic electrodes Streszczenie W artykule scharakteryzowano technologię wytwarzania złączy wielościegowych w aspekcie kontroli ilości wodoru dyfundującego. Oznaczono zawartość wodoru dyfundującego w stopiwie dla wielościegowych złączy spawanych wykonanych dwoma technologiami: za pomocą elektrod o otulinie rutylowej oraz celulozowej i zasadowej. Ustalono, że po wykonaniu czterech ściegów ilość wodoru dyfundującego spada w przypadku pierwszej technologii z poziomu 36 ml/100 g do 18 ml/100 g, natomiast w drugim z około 40 ml/100 g do poziomu 12 ml/100 g. Wyjaśniono mechanizmy odpowiedzialne za to zjawisko i zasugerowano kierunki kontynuacji badań. Słowa kluczowe: wodór dyfundujący, spawanie elektrodami otulonymi, elektrody rutylowe, elektrody celulozowe, elektrody zasadowe

show abstract

“…The greatest problems are due to susceptibility to cracking, especially cold cracking, of welds made underwater [3,8,10,[13][14][15][16][17]. High cooling rate of welded joint and associated with it tendency to forming hard quenching structures within the HAZ and increased amount of diffusible hydrogen in deposited metal is conducive to the phenomenon [18][19][20][21][22]. Cold cracking is one of the forms of hydrogen-generated failures of welded joints [10,17,23].…”

Section: Tab1 Grades Of Steels Applicable To Pipelines Acc Api 5l mentioning

confidence: 99%

Underwater Wet Repair Welding of API 5L X65M Pipeline Steel

Rogalski

Łabanowski

2017

Polish Maritime Research

View full text Add to dashboard Cite

This paper presents results of the research of effect of polymer insulation of pipeline made of API 5L X65M steel as well as underwater wet welding parameters on properties of joints made by covered electrodes. Effect of heat input on structure and hardness of joints during repair of underwater pipeline was analyzed. Welding defects like microcracks, micro-lacks of fusion, slag inclusions, as well as HAZ hardness increase over an assumed acceptance criterion for welded joints in pipes without anticorrosion polymer insulation, were identified. A significant effect of polimer insulation on structure and properties of welded joints, was found.

show abstract

Cracking of High-Strength Steel Welded Joints

Cited by 9 publications

References 10 publications

Evaluation of Microstructure and Selected Mechanical Properties of Laser Beam Welded S690QL High-Strength Steel

Evaluation of Microstructure and Selected Mechanical Properties of Laser Beam Welded S690QL High-Strength Steel

Diffusible Hydrogen Content in Deposited Metal of Multilayer Welded Joints

Underwater Wet Repair Welding of API 5L X65M Pipeline Steel

Contact Info

Product

Resources

About