Investigation of mechanical properties of laser welded dual-phase steels at macro and micro levels

Öztürk, Ekrem; Arıkan, Hüseyin

doi:10.1016/j.optlastec.2022.108713

Cited by 13 publications

(11 citation statements)

References 36 publications

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“…MPa here) and in the value of ductility it is more than three times higher (16.92 % in [19] contra 54.5 % here). This means that when using a component from this experimental steel for the deformation zones, the component absorbs multiple values of impact energy.…”

Section: Mechanical Propertiesmentioning

confidence: 54%

“…Comparing the mechanical properties of this experimental steel with dual-phase steels (e.g. DP800 in [19]), which are nowadays commonly used for car body parts in the automotive industry for their good combination of strength and ductility [20,21], it is evident that in the values of ultimate tensile strength the experimental steel is comparable to DP800 (846 MPa in [19] contra 941…”

Section: Mechanical Propertiesmentioning

confidence: 92%

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Material Properties of High-strength High Chromium TWIP Steel with Increased Corrosion Resistance

Podaný¹,

Studecký²,

Kocijan³

2023

Manufacturing Technology

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Twinning induced plasticity (TWIP) steels are a class of high-strength steels that have been developed for their outstanding ductility and strength properties. TWIP refers to the fact that these steels display an unusually high degree of deformation before fracture due to the formation of twins during deformation. TWIP steels could be used in a variety of industries for structural applications or components that need to withstand high levels of stress and deformation. This article deals with the development of high strength with fully austenitic microstructure and high chromium content. Microstructure, mechanical and corrosion properties of this steel were studied. TWIP Steels Microstructure Mechanical properties Corrosion

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Section: Mechanical Propertiesmentioning

confidence: 54%

Section: Mechanical Propertiesmentioning

confidence: 92%

Material Properties of High-strength High Chromium TWIP Steel with Increased Corrosion Resistance

Podaný¹,

Studecký²,

Kocijan³

2023

Manufacturing Technology

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show abstract

“…Welding speed was the main factor influencing the strength. [ 9 ] Retained austenite or austenite might have appeared in FZ. HAZ exhibited a moderate fiber texture and was distorted with an increased welding speed.…”

Section: Introductionmentioning

confidence: 99%

“…The fusion zone (FZ) of laser-welded DP steel mainly consists of full martensite, and the microstructural characteristics in FZ differ with the heat input and element. [9][10][11][12][13] A low heat input and high welding speed resulted in a low width of softened HAZs. Welding speed was the main factor influencing the strength.…”

Section: Introductionmentioning

confidence: 99%

Role of Ni Content on Microstructure, Mechanical Property, and In‐Site Local Corrosion Behavior of Welded Joints Produced by Laser Welding of Dual‐Phase Steel

Zhai,

Liu,

et al. 2023

steel research int.

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In this study, the effects of Ni content on the microstructure, microhardness, and in‐site local corrosion behavior of laser‐welded joints in dual‐phase steel were investigated. The experimental results indicated that the microstructure of the fusion zone changed from martensite to austenite as the Ni content increased. The fusion zone (FZ) hardnesses of the 0Ni (no Ni foil addition) and 50Ni (50 μm Ni foil) welded joints were higher than that of the 100Ni (100 μm Ni foil) welded joints because of the austenite in the 100Ni welded joint. The welded joint without Ni showed severe pitting corrosion (more than 15 pitting sites in each zone of the welded joint) at the tested corrosion time. However, when immersed in the corrosion solution, the welded joints with added Ni exhibited slight pitting corrosion (less than 5 pitting sites). The Ni addition inhibited the pitting corrosion of the welded joints of high‐strength dual‐phase steel.This article is protected by copyright. All rights reserved.

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“…The increase in the use of DP steels has led researchers to characterize the welding properties of these steels. Previous literatures have studied many aspects of laser welding and resistance spot welding of DP steels [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. In order to maximize performance, combinations of dissimilar materials are used extensively in the automotive industry.…”

Section: Introductionmentioning

confidence: 99%

Microstructural and mechanical properties of dissimilar SMAW process joints of DP Steels obtained by intercritical heat treatment from AISI 1010 steel

LAROUI,

Chegroune,

Hariti

et al. 2023

Preprint

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Dual phase steel is a kind of advanced high strength steel used in automotive industry to reduce a fuel consumption. The present study assesses the microstructural and mechanical behavior of a dissimilar butt-welded dual-phase steel by Shielded Metal Arc Welding process. The ferrite phase with variable martensite fraction from 27–70% was obtained by water quenching at different inter-critical temperatures from a plate carbon steel AISI 1010 having a microstructure consisting of ferrite and pearlite. The mechanical properties, strength and ductility of DP steels were influenced by martensite volume fraction (MVF). When MVF reached value of 70%, the strength was improved by 28% and the elongation was decreased by 25%. Additionally, the DP steels obey to the two-stage strain hardening behavior. The obtained DP steels were welded by a shield metal arc weld (SMAW) process in a single pass while maintaining a constant heat input. Systematic analysis of dissimilar welded joints, microstructure and microhardness, revealed that the fusion zones remain unchanged. Tensile test of weld joints showed lower ultimate tensile strength (UTS), elongation and strain hardening exponent compared to the dual phase (DP) steel. The DP700/DP900 welded joint have the highest ultimate tensile strength compared to the other welded joints due to its higher martensite volume fraction.

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Investigation of mechanical properties of laser welded dual-phase steels at macro and micro levels

Cited by 13 publications

References 36 publications

Material Properties of High-strength High Chromium TWIP Steel with Increased Corrosion Resistance

Material Properties of High-strength High Chromium TWIP Steel with Increased Corrosion Resistance

Role of Ni Content on Microstructure, Mechanical Property, and In‐Site Local Corrosion Behavior of Welded Joints Produced by Laser Welding of Dual‐Phase Steel

Microstructural and mechanical properties of dissimilar SMAW process joints of DP Steels obtained by intercritical heat treatment from AISI 1010 steel

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