Microstructure and mechanical properties of pure Ti processed by high-ratio differential speed rolling at room temperature

被引：109

作者：

Kim, W. J. ^{[1
]}

Yoo, S. J. ^{[1
]}

Lee, J. B. ^{[2
]}

机构：

[1] Hongik Univ, Dept Mat Sci & Engn, Seoul 121791, South Korea

[2] Tohoku Univ, Dept Mat Sci & Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

SCRIPTA MATERIALIA | 2010年 / 62卷 / 07期

关键词：

Cold working; Severe plastic deformation (SPD); Titanium; Grain refining; Texture; SEVERE PLASTIC-DEFORMATION; TITANIUM; SHEETS;

D O I：

10.1016/j.scriptamat.2009.12.008

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页码：451 / 454

页数：4

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