Finite element and experimental investigation on the effects of temperature, strain and strain rate on microstructure and mechanical properties of FSSWed TRIP steel joints

Ebrahimpour, Ali; Mostafapour, Amir; Samadian, Kaveh

doi:10.1088/2053-1591/aae8f3

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…Utilizing analysis of variance, the direct, quadratic, and interactive impacts of the parameters on the responses were scrutinized, culminating in the formulation of a distinct mathematical model for each response. In particular, current density had the most significant impact on all responses [8].…”

Section: Introductionmentioning

confidence: 98%

Yakma Alın Kaynağıyla Birleştirilmiş S355jr Yapı Çeliklerinde ITAB’ın Ansys ile Analizi

ARABACI

2024

Journal of Polytechnic

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In this study, we focus on predicting the HAZ, which is a region whose mechanical properties are not clearly known, by modeling factors such as temperature input and heat turbulence, which may have different properties in the welding region. This is important for the safety of welded structures, because if the mechanical and thermal properties of these structures, which are used in many areas, can be determined in advance, they can be used more safely. In the study, flash butt welding method was preferred and holes were opened at regular intervals in the samples that were brought to appropriate dimensions for the welding process, and temperature values were measured and recorded using thermocouples and data loggers during the welding process. Additionally, the maximum temperature reached in the welding area was measured using a thermal camera during welding. Microstructural changes occurring in the joining regions of the welded test pieces were examined using light microscopy and scanning electron microscopy (SEM). Micro hardness measurements were made to determine mechanical properties. Using the ANSYS program, three-dimensional models were created using the finite element method under the same experimental conditions and compared with the experimental results. As a result of this comparison, it was seen that the findings were compatible with the actual results. For this reason, it is emphasized that the use of simulation programs is important to predict the properties of welded structures and possible problems.

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Section: Introductionmentioning

confidence: 98%

Yakma Alın Kaynağıyla Birleştirilmiş S355jr Yapı Çeliklerinde ITAB’ın Ansys ile Analizi

ARABACI

2024

Journal of Polytechnic

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“…Results indicated that the arrangement of one row of four joints perpendicular to the loading direction is the best as it has highest fatigue strength. Ebrahimpour et al [ 11 ] investigated the TRIP steel sheets jointed by the FSSW process for different rotational speeds experimentally and numerically. FEM was employed to calculate the effects of temperature, strain, and strain rate during the welding process.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Modeling and Numerical Analysis of Re-Filling Probe Hole of Friction Stir Spot Welded Joints in Aluminum Alloys

et al. 2021

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In the present study, the fatigue behavior and tensile strength of A6061-T4 aluminum alloy, joined by friction stir spot welding (FSSW), are numerically investigated. The 3D finite element model (FEM) is used to analyze the FSSW joint by means of Abaqus software. The tensile strength is determined for FSSW joints with both a probe hole and a refilled probe hole. In order to calculate the fatigue life of FSSW joints, the hysteresis loop is first determined, and then the plastic strain amplitude is calculated. Finally, by using the Coffin-Manson equation, fatigue life is predicted. The results were verified against available experimental data from other literature, and a good agreement was observed between the FEM results and experimental data. The results showed that the joint’s tensile strength without a probe hole (refilled hole) is higher than the joint with a probe hole. Therefore, re-filling the probe hole is an effective method for structures jointed by FSSW subjected to a static load. The fatigue strength of the joint with a re-filled probe hole was nearly the same as the structure with a probe hole at low applied loads. Additionally, at a high applied load, the fatigue strength of joints with a refilled probe hole was slightly lower than the joint with a probe hole.

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Application of response surface methodology for weld strength prediction in FSSWed TRIP steel joints

2020

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Finite element and experimental investigation on the effects of temperature, strain and strain rate on microstructure and mechanical properties of FSSWed TRIP steel joints

Abstract: Finite element and experimental investigation on the effects of temperature, strain and strain rate on microstructure and mechanical properties of FSSWed TRIP steel joints To cite this article before publication: Ali Ebrahimpour et al 2018 Mater. Res.

Cited by 6 publications

References 22 publications

Yakma Alın Kaynağıyla Birleştirilmiş S355jr Yapı Çeliklerinde ITAB’ın Ansys ile Analizi

Yakma Alın Kaynağıyla Birleştirilmiş S355jr Yapı Çeliklerinde ITAB’ın Ansys ile Analizi

Fatigue Modeling and Numerical Analysis of Re-Filling Probe Hole of Friction Stir Spot Welded Joints in Aluminum Alloys

Application of response surface methodology for weld strength prediction in FSSWed TRIP steel joints

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