Development of grain structure during friction-stir welding of Cu-30Zn brass

作者：Mironov S^*; Inagaki K; Sato Y S; Kokawa H

来源：Philosophical Magazine, 2014, 94(27): 3137-3148.

DOI：10.1080/14786435.2014.951712

• copper alloys
• friction stir welding
• electron-backscatter diffraction (EBSD)
• microstructure
• texture

High-resolution electron backscatter diffraction was employed to study the evolution of microstructure during friction stir welding of a typical low stacking fault energy material (Cu-30Zn brass) over a wide range of welding temperatures. In all cases, microstructure evolution was found to be governed by discontinuous recrystallization that occurred via grain-boundary bulging and subsequent recrystallization nucleation. This promoted drastic grain refinement and significant strengthening. The crystallographic textures that evolved were typically dominated by a A/A {1 1 1 1} <100> simple shear texture.

• 出版日期2014