Correlations between hardness and atomic bond parameters of pure metals and semi-metals after processing by high-pressure torsion

SCRIPTA MATERIALIA

卷:64

Article

Edalati, Kaveh¹  Horita, Zenji¹ 

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

关键词: High-pressure torsion;    Ultrafine-grained microstructure;    Severe plastic deformation;    Hardness;   

DOI  :  10.1016/j.scriptamat.2010.09.034

来源: Elsevier

【 摘 要 】

High-purity elements (magnesium, aluminum, silicon, scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, germanium, zirconium, niobium, molybdenum, palladium, silver, indium, tin, tellurium, neodymium, hafnium, tantalum, tungsten, rhenium, platinum, gold and lead) were processed by high-pressure torsion and subsequently evaluated by Vickers microhardness measurements. The hardness at the steady state was expressed as a unique function of atomic bond energy, specific heat capacity, specific latent heat of fusion, linear thermal expansion coefficient and activation energy for self-diffusion. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free