Temat: 304 SS - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Joint Hydrogen Susceptibility of 304 SS Welded with Titanium
Podatność połączenia na wodorowanie w układzie plateru stal 304 SS zgrzewanym wybuchowo z tytanem
Autorzy:: Mazancová, E.
Ostroushko, D.
Saksl, K.
Niesłony, A.
Powiązania:: https://bibliotekanauki.pl/articles/356513.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: 304 SS-Ti weld
fatique
hydrogen response
phase analysis
304 SS
zmęczenie
wodorowanie
analiza fazowa
Opis:: Welds of thick plates (304 SS) clad with Ti of commercial purity in as-received state and also after subsequent heat treatment and/or after hydrogen charging were investigated. Fatigue tests were carried out at amplitude of 20 Hz and in case of bimetal without hydrogen charging also at amplitude of 40 Hz. After heat treatment, charged welds showed higher threshold level than the welds without heat treatment. Energy dispersed analyses (EDA) of fracture surfaces showed that failure predominantly occurred in joint. Hydrogen induced cracking (HIC) response of bimetal samples demonstrated favourable results both after welding and after subsequent heat treatment. Short and thin cracks were observed, exclusively located in mixed zone, where approx. 16-20 at. % of Ti using EDX (energy dispersed analyser) was revealed. By application of monochromatic synchrotron radiation Ti-α , Fe-fcc, Fe-bcc and intermetallic phase Fe₂Ti were detected.
Badano połączenia grubych blach platerowanych (304 ss) z Ti o czystości technicznej po zgrzaniu, jak i po częściowym procesie termicznym i/lub po wodorowaniu. Wykonano testy zmęczeniowe o amplitudzie 20 Hz a w przypadku bimetalu bez wodorowana również o amplitudzie - 40 Hz. po przeprowadzeniu wygrzewania, obciążone połączenie ujawniło wyższy poziom progu niż połączenie, w których nie wykonano obróbki termicznej. Analiza EDA powierzchni łączenia udokumentowała silny udział pęknięć na powierzchni łączenia. Wodorowanie silnie wpływa na inicjacje pękanie (HIC), w bimetalowych próbkach w stanie po platerowaniu, jak i po obróbce termicznej. Zaobserwowano, krótkie i cienkie pęknięcia, które zlokalizowane były w strefie połączenia, gdzie zaobserwowano (analiza SEM/EDX) fazy zawierające 16-20 wt.% Ti. Przez zastosowanie monochromatycznego promieniowania synchrotonowego wykryto fazy Ti- α, Fe-fcc, Fe-bcc oraz fazę międzymetaliczną typu Fe₂Ti.
Źródło:: Archives of Metallurgy and Materials; 2014, 59, 4; 1605-1610
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Investigations on the effects of nitrogen gas in CNC machining of SS304 using Taguchi and Firefly Algorithm
Autorzy:: Prasanth, P.
Sekar, T.
Sivapragash, M.
Powiązania:: https://bibliotekanauki.pl/articles/2090705.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: SS304 alloy
turning
Taguchi method
optimization
Firefly Algorithm
stop SS304
skręt
metoda Taguchi
optymalizacja
algorytm Firefly
Opis:: This work attempts to use nitrogen gas as a shielding gas at the cutting zone, as well as for cooling purposes while machining stainless steel 304 (SS304) grade by Computer Numerical Control (CNC) lathe. The major influencing parameters of speed, feed and depth of cut were selected for experimentation with three levels each. Totally 27 experiments were conducted for dry cutting and N2 gaseous conditions. The major influencing parameters are optimized using Taguchi and Firefly Algorithm (FA). The improvement in obtaining better surface roughness and Material Removal Rate (MRR) is significant and the confirmation results revealed that the deviation of the experimental results from the empirical model is found to be within 5%. A significant improvement of reduction of the specific cutting energy by 2.57% on average was achieved due to the reduction of friction at the cutting zone by nitrogen gas in CNC turning of SS 304 alloy.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; e136211, 1--8
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Investigations on the effects of nitrogen gas in CNC machining of SS304 using Taguchi and Firefly Algorithm
Autorzy:: Prasanth, P.
Sekar, T.
Sivapragash, M.
Powiązania:: https://bibliotekanauki.pl/articles/2173582.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: SS304 alloy
turning
Taguchi method
optimization
Firefly Algorithm
stop SS304
skręt
metoda Taguchi
optymalizacja
algorytm Firefly
Opis:: This work attempts to use nitrogen gas as a shielding gas at the cutting zone, as well as for cooling purposes while machining stainless steel 304 (SS304) grade by Computer Numerical Control (CNC) lathe. The major influencing parameters of speed, feed and depth of cut were selected for experimentation with three levels each. Totally 27 experiments were conducted for dry cutting and N2 gaseous conditions. The major influencing parameters are optimized using Taguchi and Firefly Algorithm (FA). The improvement in obtaining better surface roughness and Material Removal Rate (MRR) is significant and the confirmation results revealed that the deviation of the experimental results from the empirical model is found to be within 5%. A significant improvement of reduction of the specific cutting energy by 2.57% on average was achieved due to the reduction of friction at the cutting zone by nitrogen gas in CNC turning of SS 304 alloy.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; art. no. e136211
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A Study of Corrosion Behavior of Austenitic AISI 304L and 316Ti Stainless Steels in the Animal Slurry
Autorzy:: Rokosz, Krzysztof
Hryniewicz, Tadeusz
Uran, Michał
Powiązania:: https://bibliotekanauki.pl/articles/1192037.pdf
Data publikacji:: 2016
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Animal slurry
AISI 304L and 316Ti SS
Pitting corrosion
Comparison
Opis:: The aim of this study was to compare the pitting corrosion resistance of two austenitic stainless steels, AISI 304L and AISI 316Ti, which are often used for agricultural machinery building. For the corrosion experiments, animal slurry from a pig farm was used. The results obtained from electrochemical corrosion experiments were proceeded by significance tests in Statistica software. The average value of the pitting corrosion potential of AISI 304L stainless steel in the animal slurry is equal 1044.3±146.6 mVSCE whereas the average potential for AISI 316Ti SS equals 1058.4 ±28.3m mVSCE. Corrosion potential of AISI 304L SS is equal 549±80.5 mVSCE, while for AISI 316Ti SS it equals 425.9±80.5 mVSCE. The range of pitting corrosion potentials of AISI 304L SS (364 mVSCE) was over four times higher than that for AISI 316Ti SS (84 mVSCE); the minimum values of pitting corrosion potential for AISI 304L SS (779 mVSCE) was lower than that obtained for AISI 316Ti SS (1012 mVSCE). On the basis of the results it may be concluded that AISI 304L stainless steel is less resistant in case of pitting corrosion resistance than AISI 316Ti SS. For this reason, austenitic AISI 316Ti stainless steel should be used for the transportation or storage of animal slurry.
Źródło:: World Scientific News; 2016, 50; 174-185
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Comparative Corrosion Study of Austenitic AISI 304L and 316Ti Stainless Steels in the Ammonium nitrate/Urea Solution (AUS)
Autorzy:: Rokosz, Krzysztof
Hryniewicz, Tadeusz
Trzeszczkowski, Stanisław
Powiązania:: https://bibliotekanauki.pl/articles/1182940.pdf
Data publikacji:: 2016
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: ammonium nitrate/urea solution (aus)
cold-rolled 304l and 316ti ss
comparison
pitting corrosion
Opis:: The aim of the study was to determine the corrosion behavior of two austenitic stainless steels, AISI 304L and AISI 316Ti, after cold rolling (AR) and mechanical polishing/grinding (MP), in a 32% aqueous solution of AUS (RSM®) Ammonium Nitrate/Urea Solution, used as fertilizer, and compared with the corrosion resistance results obtained in 3% aqueous solution of sodium chloride (NaCl). The studies have shown that cold rolled austenitic stainless steels (AISI 304L and AISI 316Ti) in the 32% aqueous solution of AUS have more than two times higher pitting corrosion resistance than that obtained in 3% aqueous solution of sodium chloride (NaCl). Surface scratch of the cold rolled austenitic AISI 304L stainless steel and submersion of the samples in 3% aqueous solution of sodium chloride resulted in decreasing of its pitting corrosion resistance of more than three times; on the other hand, the pitting corrosion resistance of AISI 316Ti in the same solution decreased of two times. It was found that for both stainless steels (AISI 304L and AISI 316Ti) after mechanical grinding, as simulated by the surface scratch, and submersion of the samples in 32% aqueous solution of AUS, the pitting corrosion resistance was not worsened, because of the passivation properties of AUS solution. The study results have shown that in the natural environments containing aqueous solutions of sodium chloride (NaCl), the use of austenitic stainless steel containing chromium, nickel, molybdenum and titanium (AISI 316Ti) is advised. In other environments without chlorides, such as the AUS fertilizer, the use of austenitic AISI 304L stainless steel may be considered as adequate.
Źródło:: World Scientific News; 2016, 49, 2; 249-271
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Corrosion studies of austenitic and duplex stainless steels in the environment of ferment of biogas plants
Autorzy:: Rokosz, Krzysztof
Hryniewicz, Tadeusz
Kara, Marta
Powiązania:: https://bibliotekanauki.pl/articles/1179602.pdf
Data publikacji:: 2017
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: AISI 304L
AISI 316Ti
austenitic SS
biogas plant
corrosion
duplex SS 2205
Opis:: In the present paper, the study of pitting and general corrosion of stainless steels used in agriculture, specifically for the agricultural biogas plant constructions, is presented. The austenitic stainless steels AISI 304L, AISI 316Ti, and duplex steel 2205, were investigated. For the evaluation of corrosion resistance, the potentiodynamic studies were performed. General corrosion was determined in the Tafel region of potentiodynamic curve, while pitting corrosion was examined on the basis of the pitting corrosion initiation potential. Based on the studies carried out, it can be stated that the alloyed cold-rolled austenitic stainless steel AISI 304L placed in the environment of the biogas plant ferment has the lowest resistance to pitting and general corrosion of all studied steels. The cold-rolled duplex stainless steel 2205 placed in the same corrosive environment revealed the highest resistance to these types of corrosion. It should be also noted that the pitting and general corrosion resistances of tested alloy austenitic stainless steel AISI 316Ti are higher than those ones of AISI 304L, and less than those ones of duplex steel 2205. In conclusion, as could be expected, the best material for the biogas plant construction is duplex stainless 2205 because it shows the highest resistance to both types of corrosion studied. This steel can be advised as a material for construction of fermentation tanks and heating installations for mixture ferment.
Źródło:: World Scientific News; 2017, 74; 194-208
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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