Development of adiabatic shear band in cold-rolled titanium

被引：40
|
作者：
Yang, Dengke [1 ,2 ]
An, Yang [1 ]
Cizek, Pavel [1 ]
Hodgson, Peter [1 ,2 ]
机构：
[1] Deakin Univ, Ctr Mat & Fibre Innovat, Inst Technol Res & Innovat, Waurn Ponds, Vic 3217, Australia
[2] ARC Ctr Excellence Design Light Met, Clayton, Vic 3217, Australia
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 12期
关键词：
Shear band; Titanium; Cold rolling; Microstructure; Temperature; TRANSMISSION ELECTRON-MICROSCOPY; DYNAMIC DEFORMATION; SELF-ORGANIZATION; SINGLE-CRYSTALS; LOCALIZATION; MICROSTRUCTURE; ALLOY; STEEL; RECRYSTALLIZATION; TI-6AL-4V;
D O I：
10.1016/j.msea.2011.01.108
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The evolution of adiabatic shear localization in commercial titanium subjected to heavy cold rolling was investigated. The evolution of the morphology, microhardness, local shear strain, and local temperature increments were systematically studied and estimated. A shear band with about 25 mu M in width was formed and fine nanograins with a range of dimensions varying from 20 to 160 nm and had a mean size of about 70 nm were observed inside the centre of shear band after 83% cold-rolling. Microhardness test shows that hardness within the shear band is markedly higher than that of the surrounding matrix. The calculated shear strain and maximum temperature increase within the shear band are much higher than that of the overall deformed sample. The initiation of shear localization may depend on geometric perturbation instead of thermal ones. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：3990 / 3997
页数：8
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