The influence of pre-straining on the high-cycle fatigue performance of two hot-dip galvanised car body steels

被引：32
作者：
Berchem, K.
Hocking, M. G.
机构：
[1] SMS Demag Aktiengesell, Dusseldorf, Germany
[2] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2BP, England
来源：
MATERIALS CHARACTERIZATION | 2007年 / 58卷 / 07期
基金：
英国工程与自然科学研究理事会;
关键词：
galvanised; fatigue; interstitial-free; IF; steel; zinc; CORROSION-FATIGUE; CRACK PROPAGATION; DEFORMATION; RESISTANCE; STRENGTH; BEHAVIOR; GROWTH;
D O I：
10.1016/j.matchar.2006.07.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The high-cycle fatigue behaviour of a hot-dip galvanised fierritic-pearlitic steel and of a hot-dip galvanised Ti-alloyed high-strength interstitial-free steel was investigated. The testing mode was constant displacement, fully reversed plane bending. Both test materials were tested unstrained and 10% uniaxially pre-strained. Pre-straining improves the high-cycle fatigue behaviour of both steels, probably due to strain-hardening of the matrix. Some relations that have been put forward in attempts to mathematically describe the high-cycle fatigue range of the S-N curve (by Stromeyer, Weibull, Heywood, Basquin) were compared to the experimental data. The Basquin relation was found to agree best. (0 2006 Elsevier Inc. All rights reserved.
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页码：593 / 602
页数：10
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