Mechanical reliability of TWIP steel spot weldings

Colombo, Tiago; Rego, Ronnie; Otubo, Jorge; Faria, Alfredo R. de

doi:10.1016/j.jmatprotec.2018.11.021

Cited by 13 publications

(6 citation statements)

References 31 publications

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“…In previous studies, it was seen from statistical distribution analysis of welded steel materials that, Gauss (Normal) distribution adequately describes most of the mechanical properties except for the hardness and toughness (Saoudi et al, 2017) serial mechanical properties of 70 pipes, formed by spiral submerged arc welding of high strength low alloy steel (HSLA. Also there are some previous studies using the Weibull distribution in the reliability studies of the mechanical properties of welded samples included tensile tests (Colombo et al, 2019;Ku et al, 2019;Yang and Jiang, 2019). In reliability analysis of this study, Shapiro-Wilk normal distribution test was applied to all the test results.…”

Section: Reliability Analysesmentioning

confidence: 99%

“…Very few studies have carried out reliability studies in welded structures. The results of these studies showed that welding parameters influence to reliability of mechanical properties of welded materials (Colombo et al, 2019;Ku et.al., 2019). The main purpose of this study was to investigate directly the effect of welding and different widespread welding methods on the reliability of mechanical properties of steel sheets unlike previous studies.…”

Section: Introductionmentioning

confidence: 99%

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Efecto de la soldadura sobre la fiabilidad de las propiedades mecánicas en los materiales de acero AISI 1020 y AISI 6150

Çivi

İren

2021

revmetal

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La soldadura es uno de los métodos de fabricación y reparación más importantes de la tecnología actual. Aunque se sabe que puede reducir las propiedades mecánicas de los materiales, es una necesidad en muchas áreas y, en algunos casos, se prefiere debido a la fabricación eficiente y rápida. El uso generalizado de la soldadura ha planteado el problema de la fiabilidad de la estructura soldada. Es importante llevar a cabo análisis de confiabilidad, especialmente en construcciones soldadas críticas o algunos materiales críticos. En este estudio se seleccionaron dos materiales de acero (AISI 1020 y AISI 6150) los cuales se seleccionaron con diferentes niveles de soldabilidad. La soldadura por arco metálico con gas (GMAW), la soldadura por arco con gas tungsteno (GTAW) y la soldadura por arco metálico protegido (SMAW) se eligieron como técnicas de soldadura industrial generalizadas. Se examinaron las propiedades mecánicas soldadas y no soldadas de estos materiales teniendo en cuenta la fiabilidad y se investigó el efecto de la soldadura y los métodos de soldadura. Los análisis de confiabilidad revelaron que las propiedades mecánicas y microestructuras no predecibles son la característica principal del proceso de soldadura, especialmente en algunos materiales o métodos.

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Section: Reliability Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efecto de la soldadura sobre la fiabilidad de las propiedades mecánicas en los materiales de acero AISI 1020 y AISI 6150

Çivi

İren

2021

revmetal

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show abstract

“…Resistance spot welding (RSW) has been used for several years in car manufacturing due to its utility and economy. Still, this process suffers from disadvantages such as high-stress concentration, spatters, blowholes, brittle microstructure, electrode wear, hydrogen-induced cracking, softer heat-affected zone (HAZ), and higher residual stresses [4,5]. Heat treatment is required to solve these issues, but it is time-consuming and costly due to decreased productivity.…”

Section: Introductionmentioning

confidence: 99%

Friction stir lap joining techniques effects on microstructure and tensile properties of high-strength automotive steel top hat sections

Varadan¹,

Lakshminarayanan²

2023

Mater. Res. Express

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Dual Phase (DP) steel, a type of Advanced High Strength Steel (AHSS) with a thickness of 1.7 mm, is used to fabricate single-hat components that are then joined to the base plate using two friction stir welding processes: friction stir lap welding (FSLW) and friction stir spot lap welding (FSSLW). It is difficult to join this assembly using fusion welding techniques. The welding variables for the FSLW process, tool rotation speed (TRS), tool traverse speed (TTS), and plunge depth (PD), were optimized using the design of an experiments-based response surface method by experimentally measured tensile shear failure load (TFL) of top hat assembly. For the FSSLW process, the welding variable TTS was replaced by dwell time (DT). Peak temperature, microstructure at different zones, microhardness mapping, and energy absorption capacity of both processes were evaluated under optimal welding conditions. For both processes, the stir zone and the heat-affected zone had the highest and lowest microhardness, which can be correlated with the level of martensite tempering, martensite lath spacing, polygonal ferrite volume, and precipitated carbides. Under optimum welding conditions, the TSL and energy absorption of FSLW joints were 14 kN and 170 J, respectively, which is 20% and 47 higher than the TSL and energy absorption of FSSLW joints

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“…Monrrabal et al researched the corrosion behaviour of the resistance spot weld of TWIP steel [13]. Colombo et al clarified the influence of welding parameters on the mechanical properties and residual stress state of the TWIP steel spot weld [14]. Lee et al investigated the liquid metal embrittlement during RSW of Zn-coated Al-containing TWIP steel [15].…”

Section: Introductionmentioning

confidence: 99%

Similar and dissimilar resistance spot weldability of Q&P980 and TWIP1180 steels

Wei

2021

Science and Technology of Welding and Joining

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The resistance spot weldability of the newly developed TWIP1180 and Q&P980 with different thicknesses was evaluated. The different sheet thicknesses, heat conductivities and melting points caused that the Q&P/TWIP spot welds showed significantly asymmetric weld nuggets, and correspondingly influenced the tensile shear properties and failure modes of the spot welds. Pullout or partial pullout failure modes were obtained for the Q&P/Q&P and Q&P/TWIP combinations under proper welding currents, while only interfacial failure mode was observed for the TWIP/TWIP combination owing to the high strength and large thickness. Furthermore, the proper welding lobe for the Q&P/TWIP combination was obtained, which was crucial for the application of TWIP1180 and Q&P980 in automobile industry.

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Mechanical reliability of TWIP steel spot weldings

Cited by 13 publications

References 31 publications

Efecto de la soldadura sobre la fiabilidad de las propiedades mecánicas en los materiales de acero AISI 1020 y AISI 6150

Efecto de la soldadura sobre la fiabilidad de las propiedades mecánicas en los materiales de acero AISI 1020 y AISI 6150

Friction stir lap joining techniques effects on microstructure and tensile properties of high-strength automotive steel top hat sections

Similar and dissimilar resistance spot weldability of Q&P980 and TWIP1180 steels

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