Microstructure and mechanical properties of pure Ti processed by high-ratio differential speed rolling at room temperature
Microstructure and mechanical properties of pure Ti processed by high-ratio differential speed rolling at room temperature
复制标题
DOI：
10.1016/j.scriptamat.2009.12.008
复制
发表时间：
2010-04-01
影响因子：
6
通讯作者：
Lee, J. B.
中科院分区：
文献类型：
--
作者：
Kim, W. J.;Yoo, S. J.;Lee, J. B.
在室温下，通过高比差速轧制，可以有效地细化晶粒，使单道次轧制厚度减少63%。在轧制过程中，均匀分布在整个厚度截面上的窄间距剪切带和强烈剪切带引起的高温升高导致了0.1 ~ 0.3 μ m的超细晶粒的形成，轧制后的Ti板的极限抗拉强度为895 ~ 915 MPa。(C) 2009材料学报Elsevier Ltd.出版。版权所有。
High-strength Ti sheets could be fabricated by effective grain-refinement through high-ratio differential speed rolling for a thickness reduction of 63% in a single rolling pass at room temperature. Formation of narrowly spaced shear bands distributed uniformly over the entire thickness section of the sheet and a high temperature rise by intensive shear banding during rolling resulted in the formation of ultrafine grains with the size of 0.1-0.3 mu m. The rolled Ti sheet exhibited an ultimate tensile strength of 895-915 MPa. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.