Micromechanical evaluation of DP1000-GI dual-phase high-strength steel resistance spot weld

Chabok, Ali; Galinmoghaddam, Emad; Hosson, J.T.M. de; Pei, Yu

doi:10.1007/s10853-018-2886-z

Cited by 13 publications

(6 citation statements)

References 24 publications

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Section: Results and Validationmentioning

confidence: 78%

“…The calculated fracture toughness from the CZ model was further validated by published experimental data [24]. Chabok et al [24] measured the fracture toughness in both the nugget and HAZ of DP1000 by micro-cantilever bending tests. As shown in Figure 9, the numerically predicted maximum and minimum fracture toughnesses in both the nugget and HAZ of DP980 reasonably match the experimentally measured values of DP1000.…”

Section: Results and Validationmentioning

confidence: 78%

“…As shown in Figure 9, the numerically predicted maximum and minimum fracture toughnesses in both the nugget and HAZ of DP980 reasonably match the experimentally measured values of DP1000.

Figure 9 Calibrated fracture toughness and published experimental data [24]. …”

Section: Results and Validationmentioning

confidence: 99%

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An integrated approach for numerically predicting the failure of resistance spot welds

Wang

Kasuya

Kondo

et al. 2022

Science and Technology of Welding and Joining

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In this study, a numerical approach was proposed to predict the failure of resistance spot welds, into which theoretical and empirical models as well as finite element (FE) model are integrated. In this approach, the hardness of spot welds was first evaluated and the estimated hardness was then used to determine the local mechanical properties. The weld geometry and boundary conditions were faithfully followed when generating the FE model. A Gurson-type damage model and a cohesive zone model were simultaneously considered for the two main failure modes, i.e. pull-out failure and interface failure. The predictions were validated by experimental observations. The successful estimation of critical nugget size, as an exemplary application, demonstrated the utility and reliability of this approach.

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Section: Results and Validationmentioning

confidence: 78%

Section: Results and Validationmentioning

confidence: 78%

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An integrated approach for numerically predicting the failure of resistance spot welds

Wang

Kasuya

Kondo

et al. 2022

Science and Technology of Welding and Joining

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“…High strength 1000DP steel, which usage has been rising in the last years and becoming one of the critical materials for the automobile industry [23], was preferred as a specimen in this work. This material has been developed mainly for car safety applications with its high strength and excellent formability [24].…”

Section: Methodsmentioning

confidence: 99%

Combined impacts of thickness and bending angle on springback of 1000DP steel sheets

Karalar

Bayramoğlu

2022

Ironmaking & Steelmaking

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It is essential to have a predictable springback in metals to get accurate dimensions after bending. In recent years, various studies have been conducted about the springback to minimize it. Two of the most studied factors were sheet metal thickness and bending angle. However, these factors were studied independently despite every factor having interaction effects with each other. Unlike the literature, this study investigated both singular and combined effects, which allows clarifying their interaction effects and comparing the power of their impacts. High strength Dual-Phased Steel , widely used due to its unique properties mainly in the automotive industry, was preferred as a specimen material. The results were recorded to Design-Expert software. ANOVA and regression analyses were executed. It was seen that the springback decreased when the bending angle was decreased or the thickness was increased. The analyses showed the effect of thickness is more significant compared to the bending angle.

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“…As presented in many papers [ 14 , 17 , 18 , 19 , 20 ], the fracture toughness tests also play an important role in the quality of welding joints assessments. It has to be noticed that the number of papers regarding complex investigations of all zones of the welding joints is still insufficient.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Welding Process on the Mechanical Characteristics and Fracture of the S700MC High Strength Steel under Various Types of Loading

2020

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This paper focuses on the mechanical properties analysis of the high strength S700MC steel applied in welding joints. The research comprised mechanical tests for checking what the changes of tensile characteristics, mechanical parameters, resistance to impact, and fracture toughness look like in selected regions of the welding joint. Stress-strain curves have shown significant differences in the tensile characteristic shape and the values of Young’s modulus, yield stress, ultimate tensile strength, and ductility due to the welding process applied. In the case of Charpy tests, the courses of the accumulated energy, force, deflection, and project velocity are presented, indicating the maximum value of absorbed energy, the same level of force during the first contact of the projectile with the specimens, and the significant variation of the velocity for the impact energy ranging from 50 J up to 300 J. On the basis of the fracture toughness tests, the distributions of the CTOD (Crack Tip Opening Displacement) values are presented for the parent material, HAZ (Heat Affected Zone) and weld. Moreover, the characteristic features of the fatigue pre-crack, transient and crack propagation zones are identified and discussed.

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Micromechanical evaluation of DP1000-GI dual-phase high-strength steel resistance spot weld

Cited by 13 publications

References 24 publications

An integrated approach for numerically predicting the failure of resistance spot welds

An integrated approach for numerically predicting the failure of resistance spot welds

Combined impacts of thickness and bending angle on springback of 1000DP steel sheets

Influence of the Welding Process on the Mechanical Characteristics and Fracture of the S700MC High Strength Steel under Various Types of Loading

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