Detail publikace
The influence of Mean Stress on Fatigue Properties of ADI
VĚCHET, S. KOHOUT, J. HANZLÍKOVÁ, K. HRUBÝ, V.
Anglický název
The influence of Mean Stress on Fatigue Properties of ADI
Typ
Článek recenzovaný mimo WoS a Scopus
Jazyk
en
Originální abstrakt
The paper presents the results of research focused on assessment of the influence of loading cycle asymmetry on fatigue limit values. For tests two heats of unalloyed nodular cast iron were used. Test bars made of keel blocks were heat treated in salt bathes (austenitization at 900oC during 1 hour, isothermal transformation at 380 and 400oC) and loaded at symmetrical, repeating and pulsating loading cycles at room temperature. Evaluation of fatigue properties was based on the determination of S-N curves in high-cycle region including the fatigue limit assessment for 10*7 cycles to fracture. Fatigue and static tests were completed by metallographic and quantitative phase analysis. Most important result obtained from the presented study is that the dependence of stress amplitude on mean stress cannot be approached by the linear relation but by general power law with eyponent lower than 1 (i. e. the Haigh diagram has convex shape).
Klíčová slova anglicky
Austempered ductile iron; Fatigue properties; Loading cycle asymmetry; Mean stress Haigh diagram; Smith diagram
Vydáno
2008-01-01
Nakladatel
Trans Tech Publications Ltd
Místo
Stafa-Zurich Switzerland
ISSN
0255-5476
Časopis
Materials Science Forum
Ročník
567-568
Číslo
5
Strany od–do
341–344
Počet stran
4
BIBTEX
@article{BUT48934,
author="Stanislav {Věchet} and Jan {Kohout} and Klára {Hanzlíková} and Vojtěch {Hrubý}",
title="The influence of Mean Stress on Fatigue Properties of ADI",
journal="Materials Science Forum",
year="2008",
volume="567-568",
number="5",
pages="341--344",
issn="0255-5476"
}