Fracture micromechanics of static subcritical growth and coalescence of microcracks in sintered Fe–1·5Cr–0·2Mo–0·7C steel
| Autor: | M. Kabátová, Eva Dudrova, A. S. Wronski |
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| Rok vydání: | 2006 |
| Předmět: |
Coalescence (physics)
Materials science Metallurgy Metals and Alloys Micromechanics Fractography Fracture mechanics Condensed Matter Physics Fatigue limit Stress (mechanics) Flexural strength Mechanics of Materials Materials Chemistry Ceramics and Composites Composite material Stress intensity factor |
| Zdroj: | Powder Metallurgy. 49:363-368 |
| ISSN: | 1743-2901 0032-5899 |
| DOI: | 10.1179/174329006x128313 |
| Popis: | Nucleation of microcracks, their growth and coalescence are analysed in powder metallurgy (PM). Fe–1·5Cr–0·2Mo–0·7C steel by fractography allied to surface replica microscopy – at several stress levels as the maximum tensile stress in three-point bend specimens was raised to 99·6% of the transverse rupture strength TRS of 1397 MPa. The fatigue limit in this material is ∼240 MPa, at which stress level no microcracks were detected in static loading. Numerous microcracks, ranging in size from |
| Databáze: | OpenAIRE |
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