Annealing texture of nanostructured steel-based composite

作者：Jamaati Roohollah^*; Toroghinejad Mohammad Reza; Sonboli Ali; Szpunar Jerzy A

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2015, 639: 604-614.

DOI：10.1016/j.msea.2015.05.081

• Nanostructured materials
• Steel-based composite
• Annealing texture
• Accumulative roll bonding

In this study, the evolution of annealing texture in nanostructured steel-based composite processed by accumulative roll bonding (ARB) was investigated. Textural evolution after post-annealing of ARB-processed samples was evaluated using X-ray diffraction. There was a texture transition in the epsilon-fiber during ARB process and post-annealing treatment. Average grain size of the sample before and after the post-annealing was 73 nm and 1.8 mu m, respectively, and the microstructures were relatively uniform. It was found that with increasing the number of cycles, the volume fraction of the low angle grain boundary (LAGB) decreased and that of the high angle grain boundary (HAGB) increased. Also, the shear texture was dominant after the second and third ARB cycles, while for other samples, the rolling texture was dominant. The two-cycle and three-cycle samples obviously indicated a weak alpha-fiber and gamma-fiber and a relatively strong zeta-fiber. It was proposed that the recrystallization led to a decrease in the alpha-fiber and gamma-fiber and rolling texture components such as {111}< 110 > and {111}< 112 >.

• 出版日期2015-7-15
• 单位Saskatchewan; Saskatoon