Heat treatment in two phase region and its effect on microstructure and mechanical strength after welding of a low carbon steel

Güral, Ahmet; Bostan, Bülent; Özdemir, A. Tamer

doi:10.1016/j.matdes.2005.10.005

Cited by 58 publications

(31 citation statements)

References 19 publications

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“…5.for the untreated sample, the hardness values of 170-215 HV in figure 5 are observed at location within 1 mm from the fusion zone, through the HAZ to the other base metal. Is investigated it was observed the highest hardness was obtained in the fusion zone (FZ), and the hardness values decreased towards the heat affected zone (HAZ), Our hardness results are in good agreement with literature, because Gural et al [11] and Boumerzoug et al [6], have found the highest hardness values are measured in the weld metal area (WM). The variation in properties across the weld can be attributed to several factors, mainly to residual stresses just after welding.…”

Section: The Hardness Examinationsupporting

confidence: 90%

Influence of Heat Treatments on the Microstructure of Welded Api X70 Pipeline Steel

Digheche

Boumerzoug

Diafi

et al. 2017

Acta Metall Slovaca

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Welding is one of the most important technological processes used in many branches of industry such us industrial engineering, shipbuilding, pipeline fabrication among others. Generally, welding is the preferred joining method and most common steel are weldable. This investigation is a contribution to some scientific works which have been done on welding of low carbon steel. This work, presents some heat treatments were used to alter the microstructure of base metal (BM), heat affected zone (HAZ) and weld metal (WM) in the welded pipe steel of grade API X70. It presents the microstructures obtained after three heat treatments at 200°C, 400°C and 600°C for 30 min. Scanning electron microscopy and X-ray diffraction have been used as characterization techniques to observe the WM microstructures, in addition the Vickers hardness test are also achieved. The results revealed that the isothermal heat treatment caused grain growth and coarsening reactions in the weld zone and the hardness of weld joints decreased were the main transformations after increasing the temperature of the heat treatment.

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Section: The Hardness Examinationsupporting

confidence: 90%

Influence of Heat Treatments on the Microstructure of Welded Api X70 Pipeline Steel

Digheche

Boumerzoug

Diafi

et al. 2017

Acta Metall Slovaca

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“…When the results presented in this work are compared to results related to welding of carbon steels using other welding techniques like metal inert gas welding [48], pulsed gas metal arc welding [49], resistance spot welding [50], butt welding [51], laser welding [52,53], and friction stir welding [54], it is noticeable that in all mentioned techniques the formation of martensite is observed, which is not the case after explosive welding as presented in this M A N U S C R I P T…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Microstructure and mechanical properties of medium-carbon steel bonded on low-carbon steel by explosive welding

et al. 2016

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“…It is well known that the highest brittleness is recorded in the coarse-grained region. [4,12,16] The investigations of the …”

Section: Impact Energymentioning

confidence: 99%

Effect of heat input on the mechanical properties of welded joints in high-strength steels

Pirinen

Martikainen

Layus

et al. 2015

Welding International

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Experiments were carried out to determine the properties of the welded joints in 8 mm thick high-strength steels produced by quenching and tempering and thermomechanical rolling with accelerated cooling (tensile strength 821-835 MPa). The dependence of the strength, elongation, hardness, impact energy and crack opening displacement on the heat input in the range 1.0 -0.7 kJ mm 21 was determined. The results show that the dependence of the strength of the welded joints decreases and that of the elongation increases. The heat input has only a slight effect on the impact energy and crack opening displacement in the heat-affected zone.

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Heat treatment in two phase region and its effect on microstructure and mechanical strength after welding of a low carbon steel

Cited by 58 publications

References 19 publications

Influence of Heat Treatments on the Microstructure of Welded Api X70 Pipeline Steel

Influence of Heat Treatments on the Microstructure of Welded Api X70 Pipeline Steel

Microstructure and mechanical properties of medium-carbon steel bonded on low-carbon steel by explosive welding

Effect of heat input on the mechanical properties of welded joints in high-strength steels

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