Effect of Preheating on Microstructure and Tensile Properties of Friction Stir Welded AA7075 Aluminium Alloy Joints

Poongkundran, R.; Senthilkumar, K.

doi:10.1590/1678-4324-2016161056

Cited by 6 publications

(6 citation statements)

References 20 publications

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“…DOI: https://doi.org/10.11113/jm.v45.456 The beneficial effect of preheating on the A7075 aluminium alloy specimen was a successful weld joint for output in tensile strength and joint efficiency during process control [85]. Before welding a joint, add preheating process with a selection of the tool pin profile and the appropriate combination of parameters; it provides the presence of a microcavity that indicates ductility failure for joints [65].…”

Section: Mechanical Properties Of Dissimilar Fswmentioning

confidence: 99%

Assessment of Friction Stir Welding: An Overview

Hasnol

Zaharuddin

Ali

et al. 2023

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Friction stir welding (FSW) has an advanced technique in solid-state conditions that joins from different materials compared to the fusion welding process and is eco-friendly. This ignificant advancement involves aluminium (Al) alloys which facilitate the FSW of distinguished flow patterns in the weld zone. Technically, heat energy and stirred material resulted in softening areas, affecting joint efficiency, mechanical properties, and metallurgical characterisation. This paper has concerns comprehensively covering and summarising the development and application of the topic in different aspects of the performance and quality of the FSW welded joint. The proper tools can create sufficient heat under the shoulder for excellent performance to deal with the welding parameter. All these tools have their literature and journal, which extensive discussion.Furthermore, alloy positioning, defect formation,rotational speed and transverse feed are essential analytical tools for FSW to control the significant weld quality. Furthermore, the mechanical properties associated with microstructural evolution highly dependent on welding technique have remarkably contributed to product development. Finally, a previous study has shown the interest in the topic to enhance the knowledge for further investigation with emerging technology for future recommendations in the FSW discipline.

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Section: Mechanical Properties Of Dissimilar Fswmentioning

confidence: 99%

Assessment of Friction Stir Welding: An Overview

Hasnol

Zaharuddin

Ali

et al. 2023

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“…From Figure 2(a), the temperature in AS is much higher than that in RS, which indicates that the grains in AS may be much coarser than that in RS, resulting in different varying rate. When the preheating temperature is above 150°C, the temperature in the HAZ is close to peak ageing temperature [12], which was proved to enhance the precipitation hardening [5]. WNZ has the finest grains, owing to most of the grain boundaries, leading to highest microhardness.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…It also reduces the frictional stress, shear stress, and stirring action. In the research of AA7075 Al alloy preheating FSW, the tensile strength of the joint and the welding efficiency under 100°C preheating were improved in comparison with that without preheating [5]. Preheating treatment improved the flow velocities of the plastic materials and reduced the influence of the difference between Al alloy and steel [6].…”

Section: Introductionmentioning

confidence: 99%

Influence of preheating temperature on the friction stir welded ME20M magnesium alloy

Liu

Yan

et al. 2020

Science and Technology of Welding and Joining

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Friction stir welding (FSW) of ME20M magnesium alloy without and with preheating in different temperatures is carried out. The thermal histories of different preheating temperatures are investigated; the microstructure and mechanical properties of the weld joints are studied. The results show that by increasing the preheating temperature, the peak temperature, the grain size as well as the precipitate size are increased, and the precipitation is reduced. After FSW, the preferred orientation of the 0001 crystal direction changes not to parallel but to normal direction, and the texture intensity improves. The microhardness and the tensile strength of the joints first increase and then decrease with the increase of the preheating temperature.

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“…However, the number of studies on FSW performed during the determination of base material heat input through heat treatment is limited. In their study on the same topic, Poongkundran and Senthilkumar observed that tensile strength and joint impact improved if base metal is welded after it is heated up to 100 o C [17].…”

Section: Introductionmentioning

confidence: 96%

Developer Effects of Pre-Heating Applied to the Al7039 Armor Plates Prior to the Friction Stir Welding

Avci¹,

Temiz²

2018

El-Cezeri Fen Ve Mühendislik Dergisi

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In this study, Al7039 plates at certain dimensions were first joined via friction stir welding (FSW) method at room temperature. During this process, thermocouple tips positioned closely to the each side of the weld helped determine temperatures on the advancing and retreating sides. These temperature values were used to estimate pre-heating temperature of the base metal prior to the welding process. After Al7039 plates at identical dimensions were heated to a certain temperature, they were joined using the same welding parameters, and the heat distribution was determined thanks to the thermocouples positioned on the same zones. The heat distribution between two samples which were joined using different heat inputs were analyzed to reveal the impact of this heat distribution on the weld zone via mechanical tests and micro structure images.

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Effect of Preheating on Microstructure and Tensile Properties of Friction Stir Welded AA7075 Aluminium Alloy Joints

Abstract: ABSTRACT

Cited by 6 publications

References 20 publications

Assessment of Friction Stir Welding: An Overview

Assessment of Friction Stir Welding: An Overview

Influence of preheating temperature on the friction stir welded ME20M magnesium alloy

Developer Effects of Pre-Heating Applied to the Al7039 Armor Plates Prior to the Friction Stir Welding

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