Published January 2018 | Version v1
Journal article Metadata-only

Synchronously improved fatigue strength and fatigue crack growth resistance in twinning-induced plasticity steels

Creators

  • 1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 (China)
  • 2. Department of Materials Physics and Chemistry, School of Materials Science and Engineering, and Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110819 (China)

Description

The tensile, high-cycle fatigue (HCF) and fatigue crack growth (FCG) rate tests of Fe-30Mn-0.9C and Fe-30Mn-0.3C twinning-induced plasticity (TWIP) steels were performed. Meanwhile, the corresponding surface damages, fatigue fracture morphologies and microstructure evolutions were also investigated. It is detected that both the fatigue strength and FCG resistance of Fe-30Mn-0.9C steel are higher than those of Fe-30Mn-0.3C steel, because Fe-30Mn-0.9C steel possesses higher yield strength, plasticity and slip planarity than Fe-30Mn-0.3C steel. Furthermore, it is proposed that, for the Fe-Mn-C TWIP steel, increasing the C content to enhance the short range order (SRO) would lead to the synchronous increment in the fatigue strength and FCG resistance. This study may have a certain guiding significance for the selection of materials to against fatigue fracture.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.msea.2017.11.074

Additional details

Identifiers

DOI
10.1016/j.msea.2017.11.074;
PII
S0921509317315332;

Publishing Information

Journal Title
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Journal Volume
711
Journal Page Range
p. 533-542
ISSN
0921-5093
CODEN
MSAPE3

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
50043768
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CRACK PROPAGATION; FATIGUE; FRACTURES; MICROSTRUCTURE; MORPHOLOGY; PLASTICITY; SLIP; STEELS; SURFACES; TWINNING; YIELD STRENGTH
Descriptors DEC
ALLOYS; CARBON ADDITIONS; FAILURES; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; TRANSITION ELEMENT ALLOYS

Optional Information

Copyright
Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.