Weldability of an iron meteorite by friction stir spot welding
- Evans W.T. ,
- Strauss A.M. and
- Cook G.E.
- Evans W.T. ,
- Strauss A.M. and
- Cook G.E.
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Description
The friction stir spot welding (FSSW) technique was employed to weld low carbon steel, Invar and iron meteorite materials and the microstructure and mechanical properties of the welded joints were compared. FSSW experiments were performed on low carbon steel sheets under differing process parameters (rotational speed, plunge rate, dwell time, plunge depth) and then tensile tested in order to determine the appropriate parameters for the meteorite material. Welded joints from all three materials were cut, polished and etched for further comparison. Stir zone and thermomechanically affected zone (TMAZ) microstructures were observed by optical microscopy. Mechanical properties were characterised by Vickers microhardness measurements.
11th International Symposium, 17-19 May 2016, Session 8A: High Temperature II, Paper 02
Subjects
- Material
- Weldability
- Friction welding
- Welding
- Process
- Friction stir spot welding
- Microstructure
- Ferrous
- Steels
- Iron
- Process conditions
- Mechanical properties
- Properties
- Hardness
- Strength
- Ultimate tensile strength
- Weld zone
- Weld
- Dynamically recrystallised zone
- Thermomechanically affected zone
- Environment
- Space exploration environment
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