Bar stock of two steels - a micro-alloyde grade and 1541, a C-Mn forging grade - in both the as-rolled and several cold-drawn conditions were fatigue tested under strain-control. The present results are compared to previous results from strain-controlled fatigue tests on sheet, plate, shape, and bar stock by Bethlehem, and others on a wide range of grades in various conditions - as-rolled, cold-worked, aged, heat-treated, etc. The fatigue strength at one-million cycles is plotted versus the monotonic or engineering tensile strength for present tests as well as previous and published tests on a wide range of steel products. Generally, it is implied that the scatter in such a plot is experimental variability. A superior correlation is shown herein when the cyclic true stress-strain parameters developed form strain-controlled fatigue test are used. Introduction of the cyclic parameters tightens the correlation between static and cylic strength because the effects of cyclic hardening or softening are now included.


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    Title :

    Effect of cold-forming on the strain controlled fatigue resistance of automotive steels


    Additional title:

    Einfluß der Kaltverformung auf die spannungskontrollierte Dauerfestigkeit von Automobilstählen


    Contributors:

    Published in:

    Publication date :

    1992


    Size :

    13 Seiten, 12 Bilder, 3 Tabellen, 16 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Effect of cold-forming on the strain controlled fatigue resistance of automotive steels

    Reemsnyder,H.S. / Bethlehem Steel,US | Automotive engineering | 1992





    Strain hardening and forming limits of automotive steels

    shi,M.F. / National Steel,US | Automotive engineering | 1995