Microstructural Effects on the Mechanical Integrity of a TRIP-800 Steel Welded by Laser-CO2 Process

Medina, G.Y. Pérez; López, H. F.; Zambrano‐Robledo, Patricia del Carmen; Reyes-Valdés, F. A.

doi:10.1007/s11665-012-0282-4

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…Perez-Medina et al (2013) observed the metallurgical development of CO 2 laser welding of TRIP-800 steel, where they found that the laser promoted the development of up to 23 % martensite in the fusion zone (FZ) and up to 30 % of the heat-affected zone (HAZ). The physical properties of welded portion have change due to change of various phases as well as change in the dimension of grin size of the materials.…”

Section: Microstructural Studies Of Welded Jointsmentioning

confidence: 99%

Lasers Based Manufacturing

Joshi¹,

Dixit²

2015

Topics in Mining, Metallurgy and Materials Engineering

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Section: Microstructural Studies Of Welded Jointsmentioning

confidence: 99%

Lasers Based Manufacturing

Joshi¹,

Dixit²

2015

Topics in Mining, Metallurgy and Materials Engineering

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“…The physical properties of welded portion have change due to change of various phases as well as change in the dimension of grin size of the materials. Perez-Medina et al (2013) observed the metallurgical development of CO 2 laser welding of TRIP-800 steel, where they found that the laser promoted the development of up to 23 % martensite in the fusion zone (FZ) and up to 30 % of the heat-affected zone (HAZ). Figure 2 shows the micrographs of the weld zones of TRIP-800 steel.…”

Section: Microstructural Studies Of Welded Jointsmentioning

confidence: 99%

“…2 Optical micrographs of the AHSS TRIP800 in a BM, b FZ, and c HAZ. Etchants: Nital, Picral, and KlemmÕs I, B bainite, F ferrite, M martensite, RA retained austenite (Perez-Medina et al 2013) parameters and the laser-arc interspacing distance on welding quality. It was also found that the laser-micro plasma hybrid welding with zero gap gives good weld bead shape and obtained 40 % smaller arc heat input than that found in laser-TIG hybrid welding.…”

Section: Microstructural Studies Of Welded Jointsmentioning

confidence: 99%

A Literature Review on CO2 Laser Welding

Bhadra

Biswas

Sankar

2015

Lasers Based Manufacturing

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Laser welding is a sophisticated, high accuracy and high speed welding process. Laser welding is a process of joining components where laser beam used as a heat source. In this present study a literature review on welding by laser as a heat source has been addressed. In the present review, emphasis has been given especially on the laser welding numerical and experimental temperature field analysis, thermo-mechanical analysis. The time frame of the review is 1992-2013.

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“…Perez-Medina et al reported that martensite content was 23% in the fusion zone and as high as 30% in the heat-affected area. Large amounts of brittle martensite were formed in the fusion zone and reduced the weld joints toughness [18].…”

Section: Introductionmentioning

confidence: 99%

“…Previous research works reveal the details of mechanical and microstructure properties of TRIP steel weld joints. TRIP 780 high strength steel has mainly used as bumper cross member material in the automobile application [18,19]. Many authors reported on the resistance spot welding joint with reinforcement particles which were not nely dissolved in the nugget zone.…”

Section: Introductionmentioning

confidence: 99%

Effect of silica content on mechanical and microstructure behaviour of resistance spot welded advanced automotive TRIP steels

Paranthaman¹,

Natrayan

2021

Preprint

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This research investigates the effect of SiC wt% on mechanical and microstructure behavior of transformation induced plasticity (TRIP) 780 steels by resistance spot welding. The resistance spot welded samples were characterized for their properties such as hardness, tensile shear, scanning electron microscope, X-ray diffraction, ductility ratio and elongation. Results showed that the width of the nugget was closely associated with shear failure of the spot welds. X-ray diffraction analysis illustrated that the weld steels chemical composition improved in the heat-affected zones and retained austenite detected due to the influence of Si and C. Sample 4 microstructure exposed the equiaxed dimple and finer dendrites in the fusion zone. It also exhibited maximum force and fracture energy. Nano hardness was significantly decreased in the fusion zone of sample 4 due to the interface among micro alloying elements and the formation of nonmetallic presences that affected the TRIP steel hardness. Low ductility ratios were observed in steel 4 than the other weld steels due to higher tensile shear strength (TSS) and cross-tension strength (CTS) results. Fracture analysis exhibited ductile fracture with dimples and dendrites in the TRIP steels surface. The spot-welded samples mechanical properties are correlated to chemical elements, mainly Si existing in casted TRIP steels through the cooling phase of the resistance spot welding process.

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Microstructural Effects on the Mechanical Integrity of a TRIP-800 Steel Welded by Laser-CO2 Process

Cited by 9 publications

References 2 publications

Lasers Based Manufacturing

Lasers Based Manufacturing

A Literature Review on CO2 Laser Welding

Effect of silica content on mechanical and microstructure behaviour of resistance spot welded advanced automotive TRIP steels

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