Some aspects of thermomechanical fatigue of AISI 304L stainless steels; Part 2: Dislocation arrangements

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)

DOI:https://doi.org/10.1007/BF02647986· OSTI ID:5264174

Zauter, R ^[1]; Christ, H J ^[2]; Mughrabi, H ^[3]

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1. Babcock Rohrleitungsbau GmbH, Oberhausen (Germany)
2. Univ. of Siegen (Germany). Inst. for Materials Technology
3. Univ. of Erlangen-Nuernberg (Germany). Inst. for Materials

The influence of plastic strain rate, plastic strain amplitude, and temperature interval on the dislocation arrangements which are formed during thermomechanical fatigue (TMF) of the austenitic stainless steel AISI 304L in true' plastic-strain control have been investigated. At temperatures below the creep regime and/or at high-plastic strain rates, a typical dislocation arrangement called the layer/wall structure has been observed. It can be regarded to be a consequence of impeded dynamic recovery, whereby the lack of creep processes and the occurrence of dynamic strain aging contribute to the formation of this structure. With increasing temperature and decreasing strain rate, a transition takes place to subgrain-type microstructure as a result of enhanced creep-fatigue interaction. The influence of various parameters on the developing dislocation arrangements is discussed and summarized in a dislocation map.

• OSTI ID: 5264174
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States) Vol. 25:2; ISSN 0360-2133; ISSN MTTABN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUSTENITIC STEELS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DATA
DISLOCATIONS
EXPERIMENTAL DATA
FATIGUE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LINE DEFECTS
LOW CA
MATERIALS
MECHANICAL PROPERTIES
NICKEL ALLOYS
NUMERICAL DATA
STAINLESS STEEL-304L
STAINLESS STEELS
STEEL-CR19NI10-L
STEELS
TEMPERATURE DEPENDENCE
THERMAL FATIGUE