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High-temperature ox...
High-temperature oxidation behaviour of nanostructure surface layered austenitic stainless steel
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- Singh, Digvijay (författare)
- Indian Institute of Technology Indore
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- Cemin, Felipe (författare)
- University of Campinas
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- Jimenez, Mawin J.M. (författare)
- University of Campinas
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- Antunes, Vinícius (författare)
- University of Campinas
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- Alvarez, Fernando (författare)
- University of Campinas
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- Orlov, Dmytro (författare)
- Lund University,Lunds universitet,Materialteknik,Institutionen för maskinvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Materials Engineering,Department of Mechanical Engineering Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Figueroa, Carlos A. (författare)
- University of Caxias do Sul
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- Hosmani, Santosh S. (författare)
- Indian Institute of Technology Indore
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Applied Surface Science. - : Elsevier BV. - 0169-4332. ; 581
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The present study investigates the high-temperature oxidation behaviour of nanostructure surface layered AISI 304L stainless steel. A severely deformed layer of ∼300 μm thickness, consisting of nanoscale grains (∼40 nm size) in the topmost region, is successfully developed using the surface mechanical attrition treatment (SMAT) process. The SMATed layer is substantially stable up to 700 °C; however, the surface hardness is reduced by ∼37% at 800 °C for 25 h oxidation duration. Glow discharge optical emission spectroscopy and X-ray photoelectron spectroscopy analysis revealed the considerable difference in the chemistry and elemental distribution across the oxide scale of SMATed and non-SMATed specimens. Adherent, denser, and thinner scale, dominated by nanocrystals of Cr- and Mn-rich oxides, is formed on the SMATed steel. However, the Fe-oxide dominated scale containing micro-crystals is found on the non-SMATed specimens, which shows noticeable exfoliation. A high density of grain boundaries and lattice defects in the SMATed layer display admirable reactive diffusion properties of Cr and Mn during oxidation of steel, instigating the formation of a protective oxide scale. The SMATed specimens exhibit multiple zones in the oxide scale: (i) Cr/Mn depleted outer layer, (ii) Cr-/Mn-rich inner layer, and (iii) gradually decreasing Cr/Mn region.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- AISI 304L
- GDOES
- Nanostructured surface
- Oxidation
- SMAT
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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