This paper provides an analysis of the fracture surface of aluminum alloy EN AW 6082 Submerged Friction Stir Processed. Processing was performed in multiple passes. The specimens taken from the material processed for the tensile failure test were also analyzed from the point of view of the failure surfaces. The investigation of these surfaces involved microscopic analyzes carried out with the help of scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) techniques, to study the microstructure, fracture surfaces and constituent elements of the analyzed area. Based on the conclusions obtained from the analysis of the fracture surface of the aluminum alloy EN AW 6082 Submerged Friction Stir Processed, recommendations can be made to improve the quality and reliability of the alloy. The results of this research contribute to the development of knowledge on Submerged Friction Stir Processed of aluminum alloy EN AW 6082.

This paper presents an analysis of the fracture surface of the EN AW 7075 aluminum alloy, processed through submerged friction stir processing in water. Multiple passes were used during processing. Specimens prepared from the processed material were also examined with a focus on their fracture surfaces in relation to tensile failure. The investigation of these surfaces included microscopic analyses using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) techniques to examine the microstructure, fracture surfaces, and elemental composition of the analyzed area. Insights from the analysis of the fracture surface of the EN AW 7075 aluminum alloy processed by submerged friction stir processing in water provide a basis for recommendations to enhance the alloy's quality and reliability. The findings of this research advance knowledge on submerged friction stir processing in water for the EN AW 7075 aluminum alloy.

Submerged friction stir processing is a variant of processing metallic materials that is based on the principle of FSW welding and which considers the local modification of the mechanical properties and the microstructure of the material to be processed. By carrying out the underwater SFSP processing, the thermal overload of the material to be processed and that of the processing tool is reduced, thus contributing to the reduction of the dimensions of the heat affected zone and of the deformations of the processed material, as well as to a greater durability of the tool. The paper presents results obtained by ISIM Timisoara regarding the submerged friction stir processing (SFSP) of the EN AW 1200 aluminum alloy with a thickness of 5 mm. The SFSP processing was done in multiple passes using a steel processing tool, with a conical pin with four flat chamfers and different processing parameters. The positive preliminary results are useful for complex experimental research on SFSP processing of aluminum alloys, which will be carried out within the ongoing Nucleu project PN 23 37 01 02.

Friction stir processing is a research domain in a continuous dynamic that has led to the development of some variants of its application. One of the variants is submerged friction stir processing to avoid excessive heating of the processing tool and the materials to be processed. The paper presents the results of the experimental research carried out at ISIM Timisoara regarding the submerged friction stir processing (SFSP) of the EN AW 5754 aluminum alloy with a thickness of 3 mm. SFSP processing was performed in one pass and in multiple passes using a processing tool having conical pin with four flat chamfers and different processing parameters. To evaluate the processed material, structural analyses, hardness measurements, as well as mechanical tensile and static bending tests were performed.The preliminary experimental research carried out within the ongoing Nucleu PN 23 37 01 02 project shows favorable results in the SFSP processing of the EN AW 5754 aluminum alloy.

This research focuses on the detailed analysis of fracture surfaces in aluminium alloy EN AW 1200, processed through underwater friction stir processing. The material was subjected to multiple processing passes, and tensile failure specimens were subsequently extracted for further analysis. Microscopic evaluation of the fracture surfaces was conducted using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). These advanced techniques were employed to examine the microstructure, fracture morphology and elemental composition of the processed material. Insights gained from the analysis of the fracture surfaces of aluminium alloy EN AW 6082, similarly processed through underwater friction stir processing, provide significant findings. These insights can guide improvements in both the quality and reliability of the aluminium alloy in question. The findings from this study contribute to the existing body of knowledge on underwater friction processing, offering important information related to the mechanical performance of aluminium alloy EN AW 1200.

Cast aluminium alloys are widely utilized in various industrial applications due to their favourable properties. A comparative analysis of fracture surfaces for EN AC 5083 cast aluminium alloy specimens processed in a single-pass by friction stir processing (FSP) and submerged friction stir processing (SFSP) has been carried out in this paper. Fracture surface evaluation involves mechanical tensile tests, microscopic investigations using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) to analyse the microstructure, fracture characteristics and elemental composition of the processed material. The findings provide valuable insights into the fracture behaviour of EN AC 5083 aluminium alloy FSP and SFSP processed, contributing to further research on optimizing friction stir processing techniques in ambient and submerged process conditions.