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Metals 2017, 7(5), 178; doi:10.3390/met7050178

Flat-Top Cylinder Indenter Examination of Duplex Stainless Steel 2205 after Different Heat Treatments

1
Institute of Condensed Matter Chemistry and Energy Technologies (ICMATE), National Research Council of Italy (CNR), 20125 Milan, Italy
2
Department of Industrial Engineering, University of Rome “Tor Vergata”, Via del Politecnico 1, 0113 Rome, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Rebecca L. Higginson
Received: 5 April 2017 / Revised: 10 May 2017 / Accepted: 12 May 2017 / Published: 17 May 2017
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Abstract

The duplex stainless steel 2205 was heat treated at 750 °C, 850 °C, and 900 °C for increasing durations of up to 10 h. The samples were investigated through light microscopy (LM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) to characterize the volume fraction and morphology of the precipitated secondary phases. The samples were then tested via flat-top cylinder indenter for mechanical characterization (FIMEC) testing to determine the yield stresses that were found to be significantly affected by the different heat treatments. The yield stress evolution with heat treatments resulted in being correlated to both the relative volumes of the secondary phases and the morphology of the σ phase. The FIMEC test proved to be capable of detecting the effects of small amounts of secondary phases on yield stress in DSS 2205 and seems to be a promising technique for industrial applications. View Full-Text
Keywords: duplex stainless steel 2205; FIMEC indentation test; secondary intermetallic phases; heat treatments duplex stainless steel 2205; FIMEC indentation test; secondary intermetallic phases; heat treatments
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MDPI and ACS Style

Angella, G.; Fava, A.; Montanari, R.; Richetta, M.; Varone, A. Flat-Top Cylinder Indenter Examination of Duplex Stainless Steel 2205 after Different Heat Treatments. Metals 2017, 7, 178.

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