I want to know the basis of selecting the tool tilt angle in friction Stir welding. What are the issues that has to be taken understand consideration for selecting the degree of tool tilt angle for joining metal Matrix composites.
Dear, Uttam Acharya,
Tool tilt angle significantly affects the rate of heat generation, material movement, and consolidation of flowing material behind the tool pin. The axial force applied by the tool and peak temperature increases with the tool tilt angle. The tool tilt angle assists in precluding the flowing material from being expelled. The tilt angle influences the mechanical properties such as tensile-shear properties on the weld zone. The higher tilt angle may increase the wear rate and breakage of the tool pin. For a better understanding sees the below papers.
Dear Uttam Acharya
In case of FSW the only basis to choose the process parameters range is the hit and trial method. For best combinations of process parameters the optimization is required for which different parameters may varied with other respective parameters.
Regards
Tanvir singh
The tilt angle of 1 to a maximum 2 degrees is sufficient to allow forward traversing of the tool or FSW specimen. The basis of the tilt angle is to allow sufficient sliding and pressure on FSW sample.
The basis for selecting the tool tilt depends on the two factors as
1. how much flash formation occurred while increasing or decreasing the tool tilt.
2. How the size of NZ shape may vary with the change in tool tilt.
Thank you @Eyob Messele Sefene Sir, @Ali Moharami Sir, @Tanvir Singh Sir and @Mahmood Khan Sir for your valuable comments. This comments are really very helpful for my work and really come across to know many things regarding the effect of Tilt angle.
Try to take a look on this following paper it may help you
Article Effect of the Tool Tilt Angle on the Heat Generation and the...
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