Effect of Asymmetrical Accumulative Roll-Bonding and Heat Treatment on the Formation of Ultra-Fine Twin Copper
The ultrafine copper with twins was prepared by asymmetrical accumulative roll-bonding (AARB) and heat treatment. The characteristic of grain refinement and the texture transformation during recrystallization were investigated. The results show that the crossover areas, which were formed by the shear stress during AARB, were zones of compression deformation and shearing deformation when the deformation of copper occurred in these areas. The average grains size was reduced to lum from original average size of 30~50um due to processing by AARB. The strong elastic stress accumulated by shearing texture is responsible for oriental growing of a great number of grains during recrystallization. The shearing texture 001 <110> rotates 54.7°and transforms into annealing texture 111<211> i.e. twins microstructure.
Hui Mi Qing-nan Shi Jun-li Wang Lei Zhou Liang-wei Chen
Faculty of Material Science and Engineering,Kunming University of Science & Technology
国际会议
5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)
南京
英文
611-616
2011-03-01（万方平台首次上网日期，不代表论文的发表时间）