Austenitic Stainless Steels
Mostrando 13-24 de 58 artigos, teses e dissertações.
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13. Fracture Modes of AISI Type 302 Stainless Steel Under Metastable Plastic Deformation
Martensitic transformation can be induced by plastic deformation in metastable iron-based alloys, such as stainless steels containing limited amounts of C, Ni and Cr. This transformation takes place at the temperature range from Ms and Md, usually at relatively lower temperature values. The transformed martensite has been associated with maximum ultimate str
Mat. Res.. Publicado em: 09/11/2017
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14. Creep Parameters and Dislocation Substructure in AISI 316 Austenitic Stainless Steel From 600ºC to 800ºC
Stainless steels are well known by their corrosion resistance. The austenitic types, in particular, are also applied as structural components in engineering systems operating at high temperatures such as nuclear reactors, petrochemical furnaces and turbines. For these applications operational temperatures may go up to 800ºC. Under constant load applications
Mat. Res.. Publicado em: 06/07/2017
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15. The Influences of Martensitic Transformations on Cavitation-Erosion Damage Initiation and Pitting Resistance of a Lean Austenitic Stainless Steel
This paper looks into the influences of martensitic transformations on the cavitation-erosion (CE) damage initiation mechanism and pitting corrosion resistance of a lean austenitic stainless steel. The ε and α' martensites are prime sites of CE damage initiation for this steel, whereas grain boundaries are more favourable damage initiation sites for other
Mat. Res.. Publicado em: 03/10/2016
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16. The Influence of Sample Preparation on the Quantitative Analysis of the Volume Fraction of Martensite Formed in a 304l Trip Steel
The metastable 304L austenitic stainless steels are susceptible to phase transformation induced by plastic deformation. The traditional metallographic preparation, via mechanical methods, introduces superficial plastic deformation from grinding and polishing. It is important to evaluate this effect on the results of quantitative analysis of martensite formed
Mat. Res.. Publicado em: 23/10/2015
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17. Microstructural Transformations in Dissimilar Welds between Austenitic Stainless Steel and Ferritic Stainless Steel
This research studies the metallurgical transformations taking place the SMAW welding of AISI 316L austenitic stainless steel with AISI 430 ferritic stainless steel. To perform the study were used two different electrodes, AWS E309L austenitic and AWS E2209-16 duplex stainless steels 3.2 mm diameter. The joints were made with a single-pass welding including
Soldag. insp.. Publicado em: 2015-03
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18. Effect of niobium in the phase transformation and corrosion resistance of one austenitic-ferritic stainless steel
Austenitic-ferritic stainless steels containing 0.2% and 0.5% niobium were evaluated with respect to the microstructures, microhardness, pitting potential resistance, electrochemical impedance and wearing tests. Niobium is an alphagenic element and has a great influence on phase transformation of duplex stainless steels. In the present investigation, the sam
Mat. Res.. Publicado em: 01/08/2014
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19. Martensitic transformation induced by cold deformation of lean duplex stainless steel UNS S32304
Lean duplex UNS S32304 is an austenitic ferritic stainless steel with pitting resistance equivalent number around 24-25. Its corrosion resistance is similar to AISI 316L steel, but with the advantage of a yield limit two times superior to conventional austenitic grades. Deformation induced martensitic transformations (γ→ε and γ→ α') have been extensi
Mat. Res.. Publicado em: 27/09/2013
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20. Evaluation of erosion-corrosion resistance in Fe-Mn-Al austenitic steels
In this paper, the effects of Mn and Al against corrosion/errosion resistance of three samples of the Fe-Mn-Al austenitic alloys are evaluated. The samples have composition Fe-(4,9 ~ 11,0 wt. (%)) Al-(17,49 ~ 34,3 wt. (%)) Mn-(0,43 ~ 1,25 wt. (%))C, those were prepared in an induction furnace from high purity materials. The alloys were evaluated in a compose
Mat. Res.. Publicado em: 18/12/2012
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21. Application of ANFIS for analytical modeling of tensile strength of functionally graded steels
In the present study, the tensile strength of ferritic and austenitic functionally graded steels produced by electroslag remelting has been modeled. To produce functionally graded steels, two slices of plain carbon steel and austenitic stainless steels were spot welded and used as electroslag remelting electrode. Functionally graded steel containing graded l
Materials Research. Publicado em: 05/04/2012
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22. Correlation between small punch and CVN impact tests for evaluation of cryogenic fracture characteristics of isothermally-aged nitrogen-containing austenitic stainless steels
The Charpy-V-notch impact test has been used routinely to evaluate the ductile-brittle behavior in steels. Likewise, the Small-Punch test has been applied to evaluate toughness properties in different materials. In this work, both tests were conducted at -196 °C on three types of austenitic stainless steels JN1, JJ1 and JK2, which were solution treated and
Materials Research. Publicado em: 06/03/2012
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23. AvaliaÃÃo e ComparaÃÃo da ResistÃncia à CorrosÃo por Pites do AÃo SuperaustenÃtico AL 6XN PLUS TM e dos AÃos InoxidÃveis AustenÃticos da SÃrie AISI 304L, 316L e 317L / Evaluation and comparison of resistance to pitting corrosion of the steel superaustenitic AL 6XN PLUS â and the series austenitic stainless steels AISI 304L, 316L and 317L.
As torres de destilaÃÃo de petrÃleo sofrem corriqueiramente com problemas relacionados à corrosÃo devido ao elevado Ãndice de acidez presente no petrÃleo exigindo uma elevada resistÃncia à corrosÃo por parte dos equipamentos utilizados. Dentre os materiais empregados na fabricaÃÃo e revestimento dos equipamentos, destacam-se os aÃos inoxidÃveis
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/11/2011
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24. Influência dos íons brometo e cloreto sobre a resistência à corrosão por pite de diferentes aços inoxidáveis austeníticos e ferríticos. / Influence of the bromide and chloride ions on pitting corrosion resistance of various austenitic and ferritic stainless steels.
A corrosão localizada em aços inoxidáveis pode se manifestar de várias formas, tais como, a corrosão por pite, em fresta e corrosão sob tensão. Estes tipos de corrosão ocorrem quando o metal é exposto em meios agressivos como o cloreto, entre outros. O objetivo deste trabalho é estudar o comportamento dos aços inoxidáveis austeníticos e ferríti
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/06/2011