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Synchronously improved fatigue strength and fatigue crack growth resistance in twinning-induced plasticity steels
- Source :
- Materials Science and Engineering: A. 711:533-542
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- 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.
- Subjects :
- 010302 applied physics
Materials science
Mechanical Engineering
Metallurgy
Twip
02 engineering and technology
Slip (materials science)
Plasticity
Paris' law
021001 nanoscience & nanotechnology
Condensed Matter Physics
Microstructure
01 natural sciences
Fatigue limit
Mechanics of Materials
0103 physical sciences
Ultimate tensile strength
General Materials Science
0210 nano-technology
Crystal twinning
Subjects
Details
- ISSN :
- 09215093
- Volume :
- 711
- Database :
- OpenAIRE
- Journal :
- Materials Science and Engineering: A
- Accession number :
- edsair.doi...........b44a70b98b89044dafa87ccd007e4998
- Full Text :
- https://doi.org/10.1016/j.msea.2017.11.074