Microstructural characterization and mechanical properties of micro friction stir welded dissimilar Al/Cu ultra-thin sheets

Mao, Yue; Yu, Ning; Xiao, Xinbiao; Qin, Dingqiang; Fu, Li

doi:10.1016/j.jmapro.2020.10.064

Cited by 40 publications

(8 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is known that the IMC layer is the most important for metallurgical bonding between Al and Cu at the interface. But the excessive thickness of the IMC layer is drastically detrimental to the joint properties [ 3 ]. Cu particle-mixing in the Al matrix is typically problematic due to incompatibilities in the chemical and physical properties of the joining metals, resulting in the development of IMCs.…”

Section: Resultsmentioning

confidence: 99%

“…This necessitates a reliable joining technique for fabricating Al/Cu components. The challenges in joining of Al/Cu combination is due to large dissimilarities in their physical, thermal, and chemical properties, such as differences in melting temperatures and the strong affinity between Al and Cu [ 3 ]. The formation of brittle intermetallic compounds (IMCs) produces joints with less mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microstructure and Mechanical Properties Analysis of Al/Cu Dissimilar Alloys Joining by Using Conventional and Bobbin Tool Friction Stir Welding

et al. 2022

View full text Add to dashboard Cite

The feasibility of producing welding joints between 6061-T6 aluminum and pure copper sheets of 6 mm thickness by conventional friction stir welding (CFSW) and bobbin tool friction stir welding (BTFSW) by using a slot-groove configuration at the joining surface was investigated. The microstructure of the welded samples was examined by using an optical microscope and X-ray diffraction. Furthermore, the mechanical properties of the weld samples are compared based on the results of the tensile test, hardness measurement, and fractography test. The slot-groove configuration resulted in the presence of a bulk-sized Al block on the Cu side. The microscopic observations revealed the dispersion of fine Cu particles in the stir zone. The presence of intermetallic compounds (IMCs) CuAl2, which are hard and brittle, lowered the strength of the weld joints. The strength of the weld joints produced with BTFSW was superior to that of the C-FSW. The maximum hardness values of 214 HV and 211 HV are reported at the stir zone for BTFSW and CFSW, respectively. The fracture location of all the joints was at the intersection of the stir zone and the thermomechanically affected zone was on the Cu side.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties Analysis of Al/Cu Dissimilar Alloys Joining by Using Conventional and Bobbin Tool Friction Stir Welding

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Regardless of tool design or material weld plate thickness, that is the essential mechanics of material flow. For dissimilar material, underwater FSW of 1 mm thick Al-Cu, would be beneficial results from more systematic experiments, partly because the weld zone in FSW dissipates heat more rapidly than in FSW [71]. Heat loss and surface stirring also increase at the weld zone, reducing the weld's thickness and requiring improved downward direction control [72].…”

Section: Workpiece Materials Thicknessmentioning

confidence: 99%

Assessment of Friction Stir Welding: An Overview

Hasnol

Zaharuddin

Ali

et al. 2023

View full text Add to dashboard Cite

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.

show abstract

“…Mechanical qualities of the weld zone are affected by the grain size of the NZ microstructure, which is affected by all these factors. The efficiency of the weld joint depends not only on the process parameters but also on the geometric aspects of the tool (Ashok Kumar and Murugan, 2014; Mao et al , 2020; Shiva Chander and Satish Kumar, 2018). For instance, the pin’s height and profile, along with the shoulder diameter, have a significant impact on the rate of plastic deformation and the amount of heat generated due to friction (Emamian et al , 2016).…”

Section: Introductionmentioning

confidence: 99%

Characterization and optimization of weld properties due to the effect of different pin profiles for AA8011 – based friction stir welding

Naik

Boda

2023

WJE

View full text Add to dashboard Cite

Purpose This Friction stir welding study aims to weld thick AA8011 aluminium plates, and the interface joints created with a variety of tool pin profiles were examined for their effects on the welding process. Design/methodology/approach Scanning electron microscopy and optical microscopy and X-ray diffraction were used to examine the macro and micro-structural characteristics, as well as the fracture surfaces, of tensile specimens. The mechanical properties (tensile, hardness tests) of the base metal and the welded specimens under a variety of situations being tested. Additionally, a fracture toughness test was used to analyse the resilience of the base metal and the best weldments to crack formation. Using a response surface methodology with a Box–Behnken design, the optimum values for the three key parameters (rotational speed, welding speed and tool pin profile) positively affecting the weld quality were established. Findings The results demonstrate that a defect-free junction can be obtained by using a cylindrical tool pin profile, increasing the rotational speed while decreasing the welding speeds. The high temperature and compressive residual stress generated during welding leads to the increase in grain size. The grain size of the welded zone for optimal conditions is significantly smaller and the hardness of the stir zone is higher than the other experimental run parameters. Originality/value The work focuses on the careful examination of microstructures behaviour under various tool pin profile responsible for the change in mechanical properties. The mathematical model generated using Taguchi approach and parameters was optimized by using multi-objectives response surface methodology techniques.

show abstract

Microstructural characterization and mechanical properties of micro friction stir welded dissimilar Al/Cu ultra-thin sheets

Cited by 40 publications

References 41 publications

Microstructure and Mechanical Properties Analysis of Al/Cu Dissimilar Alloys Joining by Using Conventional and Bobbin Tool Friction Stir Welding

Microstructure and Mechanical Properties Analysis of Al/Cu Dissimilar Alloys Joining by Using Conventional and Bobbin Tool Friction Stir Welding

Assessment of Friction Stir Welding: An Overview

Characterization and optimization of weld properties due to the effect of different pin profiles for AA8011 – based friction stir welding

Contact Info

Product

Resources

About