The significance of slippage in processing by high-pressure torsion

SCRIPTA MATERIALIA

卷:60

Article

Edalati, Kaveh¹  Horita, Zenji¹  Langdon, Terence G.^2,3,4 

[1] Kyushu Univ, Fac Engn, Dept Mat Sci & Engn, Fukuoka 8190395, Japan

[2] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA

[3] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA

[4] Univ Southampton, Sch Engn Sci, Mat Res Grp, Southampton SO17 1BJ, Hants, England

关键词: High-pressure torsion;    Severe plastic deformation;    Slippage;    Ultrafine grains;   

DOI  :  10.1016/j.scriptamat.2008.08.042

来源: Elsevier

【 摘 要 】

Experiments were conducted to measure the extent of slippage occurring when thin disks are processed by high-pressure torsion. Separate tests were conducted on aluminum, copper and iron. The results show the extent of slippage varies between these three materials such that there is very little slippage in aluminum, slightly more slippage in copper and significant slippage when using iron. For all materials, the extent of slippage increases at both faster rotational speeds and lower imposed pressures. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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