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Title: Some aspects of thermomechanical fatigue of AISI 304L stainless steel; Part 1: Creep-fatigue damage

Journal Article · · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)
DOI:https://doi.org/10.1007/BF02647985· OSTI ID:5160392
 [1];  [2];  [3]
  1. Babcock Rohrleitungsbau GmbH, Oberhausen (Germany)
  2. Univ. of Siegen (Germany). Inst. of Materials Technology
  3. Univ. of Erlangen-Nuernberg (Germany). Inst. for Materials Science

Thermomechanical fatigue (TMF) tests on the austenitic stainless steel AISI 304L have been conducted under true' plastic-strain control in vacuum. This report considers the damage occurring during TMF loading. It is shown how the temperature interval and the phasing (in phase, out-of-phase) determine the mechanical response and the lifetime of the specimens. If creep-fatigue interaction takes place during in-phase cycling, the damage occurs inside the material, leading creep-induced damage, and no lifetime reduction occurs, even if the material is exposed periodically to temperature in the creep regime. A formula is proposed which allows prediction of the failure mode, depending on whether creep-fatigue damage occurs or not. At a given strain rate, the formula is able to estimate the temperature of transition between pure fatigue and creep-fatigue damage.

OSTI ID:
5160392
Journal Information:
Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Vol. 25:2; ISSN 0360-2133
Country of Publication:
United States
Language:
English