Strain rate dependent flow stress characterization using piezo-actuated micropress

被引：1

作者：

Taureza, Muhammad ^{[1
]}

Castagne, Sylvie ^{[1
]}

Tjahjowidodo, Tegoeh ^{[1
]}

Hu, Peng ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

11TH INTERNATIONAL CONFERENCE ON TECHNOLOGY OF PLASTICITY, ICTP 2014 | 2014年 / 81卷

关键词：

Microforming; Strain rate dependency; Size effect; Flow stress; TEMPERATURES; THICKNESS; DECREASE; METALS; GRAINS;

D O I：

10.1016/j.proeng.2014.10.172

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of strain rate on the mechanical response during microforming deformation is investigated for commercially pure titanium and aluminum. Piezoelectric actuated micropress is used to generate controlled constant strain rate between 0.1 and 10 sec(-1) in a compression experiment using three different sizes of specimens. Investigations suggest that the increase of free and constrained surface grains results in hardening-softening competition with miniaturization. In addition, loading rate in micro compression significantly influence the work hardening behavior for both materials. (C) 2014 Published by Elsevier Ltd.

引用

页码：1451 / 1456

页数：6

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