Friction Stir Processing in Wrought and Cast Aluminum Alloys

2013 ◽  
Vol 765 ◽  
pp. 741-745 ◽  
Author(s):  
Ye Cao ◽  
Diana A. Lados
Keyword(s):  
Fatigue Crack ◽  
Friction Stir Processing ◽  
Aluminium Alloys ◽  
Combined Effects ◽  
Secondary Phases ◽  
Cast Aluminum ◽  
Growth Behaviour ◽  
Crack Growth Behaviour ◽  
Friction Stir ◽  
Cast Aluminum Alloys

Friction Stir Processing (FSP) of various aluminium alloys including wrought 6061 and cast A356, 319, and A390 have been systematically investigated in this study. The effects of processing on microstructure, hardness, tensile properties, and fatigue crack growth behaviour of the alloys were studied. The alloys were judiciously selected to understand the effects of Si level, type, and morphology, and to evaluate the contributions of different secondary phases and strengthening precipitates. Individual and combined effects of these microstructural features were also assessed. The results will be presented and discussed.

Fatigue Crack Growth Behaviour of Friction Stir Welded Aluminium Alloys

2015 ◽  
Vol 665 ◽  
pp. 89-92 ◽  
Author(s):  
G. Labeas ◽  
S. Peppa
Keyword(s):  
Fatigue Crack ◽  
Aluminium Alloys ◽  
Damage Tolerance ◽  
Base Material ◽  
Weld Interface ◽  
Critical Area ◽  
Growth Behaviour ◽  
Crack Growth Behaviour ◽  
Friction Stir ◽  
Joining Process

The effect of Friction Stir Welding joining process on the damage tolerance behaviour of friction stir welded aluminium alloys is experimentally investigated. Fatigue crack propagation tests for different aluminium alloys and welding configurations have been performed. The main conclusion arising from the experimental study is that the damage tolerance behaviour of the welded material is in most cases comparable to the base material. Furthermore, the most critical area of the joint was identified to be the weld interface, i.e. the area between the nugget and the thermo-mechanically affected zone

Possibilities to Apply Friction Stir Processing FSP in Surface Engineering

2021 ◽  
Vol 890 ◽  
pp. 56-65
Author(s):  
Cristian Ciucă ◽  
Lia Nicoleta Boțilă ◽  
Radu Cojocaru ◽  
Ion Aurel Perianu
Keyword(s):  
Aluminum Alloys ◽  
Friction Stir Processing ◽  
Surface Engineering ◽  
Copper Alloys ◽  
Welding Process ◽  
Industrial Applications ◽  
Process Conditions ◽  
Cast Aluminum ◽  
Friction Stir ◽  
Cast Aluminum Alloys

The results obtained by ISIM Timisoara to the development of the friction stir welding process (FSW) have supported the extension of the researches on some derived processes, including friction stir processing (FSP). The experimental programs (the researches) were developed within complex research projects, aspects regarding the principle of the process, modalities and techniques of application, experiments for specific applications, being approached. The paper presents good results obtained by friction stir processing of cast aluminum alloys and copper alloys. The optimal process conditions, optimal characteristics of the processing tools were defined. The complex characterization of the processed areas was done, the advantages of the process applying being presented, especially for the cast aluminum alloys: EN AW 4047, EN AW 5083 and EN AW 7021. The characteristics of the processed areas are compared with those of the base materials. The results obtained are a solid basis for substantiating of some specific industrial applications, especially in the automotive, aeronautical / aerospace fields.

Friction Stir Processing: Effect on Microstructure and Mechanical Properties in Cast Aluminum Alloys

2019 ◽  
Author(s):  
Murat Tiryakioğlu ◽  
Nelson Netto
Keyword(s):  
Aluminum Alloys ◽  
Friction Stir Processing ◽  
Quality Index ◽  
Structural Quality ◽  
Casting Defects ◽  
Cast Aluminum ◽  
Friction Stir ◽  
Index Analysis ◽  
Cast Aluminum Alloys ◽  
Eutectic Si

Microstructural and mechanical data from the literature of friction stir processed (FSPed) cast aluminum alloys were reanalyzed. Results indicated that friction stir processing (FSP) produced more homogeneous microstructures, with finer eutectic Si particles, grains, and intermetallics. However, a relationship between microstructural measures and process parameters could not be established. Regardless of the resultant microstructure, structural casting defects, i.e., pores and oxide films, were reduced in size or completely eliminated after FSP. Consequently, ductility and fatigue life were drastically improved by FSP. Quality index analysis showed that some FSPed specimens have a higher structural quality than aerospace and premium quality castings, and can be used to determine the intrinsic properties of cast aluminum alloys.

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