Numerical and Experimental Investigation of Tensile Behavior of Laser Beam Welded TRIP700 Steel

Reisgen, Uwe; Schleser, Markus; Mokrov, Oleg; Ahmed, Essam

doi:10.2355/isijinternational.51.429

Cited by 20 publications

(9 citation statements)

References 11 publications

(13 reference statements)

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“…In similar welding joints, the quasistatic tensile strength is superior to the base material, due to the absence of pores and the refined microstructure . Due to the high power density, the heat‐affected zone (HAZ) is not as pronounced like in low‐alloy TRIP steels . Although these steels are prone to Mn‐degassing, the impact on the mechanical properties is negligible.…”

Section: Introductionmentioning

confidence: 99%

Tensile Behavior of Cast and Electron Beam Welded Interstitially Strengthened High-Alloy TRIP Steel

Halbauer

Eckner

Wendler

et al. 2016

steel research int.

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Due to their enormous potential for energy absorption, high-alloy TRIP/TWIP steels are designed to fulfill contrary requirements of crash-relevant structures such as strength, toughness, and ductility and even excellent weldability. To further optimize these mechanical properties and reduce the production costs at the same time, high-alloy TRIP/TWIP steels with an increased content of carbon and nitrogen and decreased amount of nickel are produced. The mechanical properties of the base materials and the capability for the phase transformation are determined for different temperatures (À40 to þ60 8C) in quasistatic tensile tests. In comparison, welding experiments with an electron beam are performed and the microstructure is examined via light optical microscopy. The welded sheets are also tested and the mechanical properties determined via micro-hardness measurements and quasistatic tensile tests. While a TRIP effect is noticeable during loading at room temperature, optimal properties of the base material can be achieved at temperatures below 0 8C. The welded samples show a ferritic-austenitic microstructure and solidified as primary ferritic with joint austenite and ferrite formation in the solidification interval.

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Section: Introductionmentioning

confidence: 99%

Tensile Behavior of Cast and Electron Beam Welded Interstitially Strengthened High-Alloy TRIP Steel

Halbauer

Eckner

Wendler

et al. 2016

steel research int.

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“…[3][4][5] Welding is a primary manufacturing process used in automobile industry, it is thus important to understand the mechanical and metallurgical phenomena concerned to the welding of AHSS. Furthermore, laser beam welding (LBW) has been very popular in auto manufacture, amounts of studies [6][7][8][9][10] have been carried out to investigate the laser welding of AHSS used in light weight vehicles. This technology possesses many advantages such as high welding speed, deep penetration, low heat input, narrow HAZ and effective integration with welding robots.…”

Section: Introductionmentioning

confidence: 99%

Retraction: Microstructure and Properties of Fiber Laser Welded Joints of Ultrahigh-strength Steel 22MnB5 and its Dissimilar Combination with Q235 Steel

Jia

Yang

et al. 2014

ISIJ Int.

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This paper is to analyze the microstructure, microhardness, tensile and fatigue properties of the welded joints performed by a fiber laser on the 22MnB5 and Q235 steels in similar and dissimilar combinations. The result shows that the weld zone (WZ) consisted of lathy martensite, and the heat affected zone (HAZ) of 22MnB5 could be divided into 3 parts: quenched zone, incomplete quenched zone and the tempered zone which didn't appear in the Q235 HAZ. The WZ had the highest hardness, while the HAZ was very narrow with a very fast drop in hardness. A soft zone existed in the HAZ of 22MnB5, and it was absent on the Q235 side. With the welding speed increasing, the martensite in the WZ became thinner and shorter, and the width of HAZ decreased. All the tensile and fatigue specimens of the similar 22MnB5 welded joints were broken in the HAZ. The base metal (BM) had a higher fatigue life than the similar 22MnB5 welded joints. The fatigue fracture contained 3 parts: crack initiation region which occurred from the specimen surface, crack propagation region and the final fast fracture region.

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“…287 MPa for base metal and 196 MPa for weld metal). Reisgen et al 27 and Kumar and Shanmugam 19 reported a similar behavior of a predicted tensile plot by FE analysis. A weld sample failed in the base metal region, and this is attributed to the presence of reinforcement.…”

Section: Metallurgical and Mechanical Characterization Of Jointmentioning

confidence: 64%

Design and development of aluminum alloy 6061-T6 pressure vessel liner for aerospace applications: A technical brief

Pramod

Shanmugam

Krishnadasan

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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This work mainly focuses on designing a novel aluminum alloy 6061-T6 pressure vessel liner intended for use in launch vehicles. Fabrication of custom-made welding fixtures for the assembly of liner parts, namely two hemispherical domes and end boss, is illustrated. The parts of the liner are joined using the cold metal transfer welding process, and the welding trials are performed to arrive at an optimized parametric range. The metallurgical characterization of weld joint reveals the existence of dendritic structures (equiaxed and columnar). Microhardness of base and weld metal was 70 and 65 HV, respectively. The tensile strength of base and weld metal was 290 and 197 MPa, respectively, yielding a joint efficiency of 68%. Finite-element analysis of a uniaxial tensile test was performed to predict the tensile strength and location of the fracture in base and weld metal. The experimental and predicted tensile test results were found to be in good agreement.

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Numerical and Experimental Investigation of Tensile Behavior of Laser Beam Welded TRIP700 Steel

Abstract: Fig. 16. Plastic strain propagation contours in different regionsat different time periods during tensile test.

Cited by 20 publications

References 11 publications

Tensile Behavior of Cast and Electron Beam Welded Interstitially Strengthened High-Alloy TRIP Steel

Tensile Behavior of Cast and Electron Beam Welded Interstitially Strengthened High-Alloy TRIP Steel

Retraction: Microstructure and Properties of Fiber Laser Welded Joints of Ultrahigh-strength Steel 22MnB5 and its Dissimilar Combination with Q235 Steel

Design and development of aluminum alloy 6061-T6 pressure vessel liner for aerospace applications: A technical brief

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