Overview of the friction bit joining process for joining of dissimilar materials
- Lim Y.C. ,
- Squires L. ,
- Miles M. ,
- et al
- Lim Y.C. ,
- Squires L. ,
- Miles M. ,
- Wang Y.L. ,
- Pan T.Y. and
- Feng Z.L.
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Description
A friction bit joining (FBJ) process was developed to facilitate spot joining of dissimilar metals and the microstructure and mechanical properties of the welded joints were investigated. The material system considered comprised sheet specimens (thickness 1.2 mm and 1.6 mm, respectively) of DP 980 dual phase steel and AA 7075-T6 aluminium alloy. The joining bit was made from AISI 4140 alloy steel. All sheet materials were prepared in a single lap joint configuration. FBJ welding experiments were conducted at a plunge speed of 2000 rpm, plunge feedrate of 225.5 mm/min, joining speed of 2500 rpm and joining feedrate of 155.1 mm/min. Cross-sectional microstructures were observed by optical microscopy and SEM. Mechanical properties were characterised by microhardness measurements and static lap shear tensile tests.
10th International Symposium, 20-22 May 2014, Poster Session, Paper 17
Subjects
- Material
- Dissimilar materials
- Welding
- Process
- Friction welding
- Aluminium and Al alloys
- Nonferrous
- 7xxx Al series
- Ferrous
- Steels
- Strength
- Mechanical properties
- Properties
- Shear strength
- Hardness
- Friction stir spot welding
- Microstructure
- Process conditions
- Weldability
- Ultimate tensile strength
- High strength steels
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