科研之友
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摘要
Defect free friction stir welds were produced in commercial purity titanium at rotational speeds between 200 and 400 rev min(-1). Friction stir welding produced a finer grain structure in the stir zone than in the base material. Electron backscattered diffraction examination suggested that the fine grains in the stir zone were formed through both continuous and discontinuous recrystallisation during friction stir welding. A torsion texture was observed in all welds and occupied most parts of the stir zone. Formation of this texture was attributed to the shear deformation along the tool shoulder during the stirring process.
- 出版日期2010-8
