Optimierte Festigkeitssteigerung eines metastabilen austenitischen Stahles durch wechselverformungsinduzierte Martensitumwandlung bei tiefen Temperaturen

verfasst von
Hans Juergen Maier, Bernhard Donth, Manfred Bayerlein, Haeel Mughrabi, Birgin Meier, Martin Kesten
Abstract

The enhancement of the strength of a metastable austenitic AISI 304 L-type stainless steel by fatigue-induced martensite formation in the temperature range 103 K to 298 K was investigated. The fatigue tests were run in closed-loop plastic strain control using a symmetric sinusoidal wave form (0.2 Hz). Plastic strain amplitudes were in the range 3.2×10-3 to 1.26×10-2. The increase in strength caused by fatigue-induced martensite formation was measured by subsequent monotonic tensile tests at room temperature. The fatigue-induced martensite content and, as a consequence, the increase in strength and the residual fatigue life vary strongly with pre-deformation conditions (plastic strain range, test temperature, number of cycles). The cyclic pre-deformation conditions can be optimized to achieve the best combination of strength and residual fatigue life as required for technical applications.

Externe Organisation(en)
Universität Siegen
Typ
Artikel
Journal
Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques
Band
84
Seiten
820-826
Anzahl der Seiten
7
ISSN
0044-3093
Publikationsdatum
12.1993
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Physik der kondensierten Materie, Physikalische und Theoretische Chemie, Metalle und Legierungen, Werkstoffchemie