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Viser treff 1-50 av 181 << Forrige 1 2 3 4    Neste >>

2022
1 Wang, Dong; Lu, Xu; Lin, Meichao; Wan, Di; Li, Zhiming; He, Jianying; Johnsen, Roy.
Understanding the hydrogen effect on pop-in behavior of an equiatomic high-entropy alloy during in-situ nanoindentation. Journal of Materials Science & Technology 2022 ;Volum 98. s. 118-122
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2021
2 Lu, Xu; Johnsen, Roy.
Evaluation of hydrogen diffusion behavior in nickel alloy 625. Academic Seminar on the M-HEAT project; 2021-03-23 - 2021-03-23
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3 Lu, Xu; Johnsen, Roy.
Study on hydrogen trapping and diffusion in nickel alloys. Academic Seminar on the M-HEAT project; 2021-06-15 - 2021-06-15
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4 Torres Rodriguez, Cristian; Johnsen, Roy; Iannuzzi, Mariano.
Crevice corrosion of solution annealed 25Cr duplex stainless steels: Effect of W on critical temperatures. Corrosion Science 2021 ;Volum 178. s. -
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5 Wang, Dong; Hagen, Anette Brocks; Wan, Di; Lu, Xu; Johnsen, Roy.
Probing hydrogen effect on nanomechanical properties of X65 pipeline steel using in-situ electrochemical nanoindentation. Materials Science & Engineering: A 2021 ;Volum 824. s. 1-10
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6 Wang, Dong; Lu, Xu; Wan, Di; Guo, Xiaofei; Johnsen, Roy.
Effect of hydrogen on the embrittlement susceptibility of Fe-22Mn-0.6C TWIP steel revealed by in-situ tensile tests. Materials Science & Engineering: A 2021 ;Volum 802. s. -
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2020
7 Lervik, Adrian; Walmsley, John; Lodgaard, Lars; Marioara, Calin Daniel; Johnsen, Roy; Lunder, Otto; Holmestad, Randi.
Stress Corrosion Cracking in an Extruded Cu-Free Al-Zn-Mg Alloy. Metals 2020 ;Volum 10.(9) s. -
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8 Skilbred, Ellen Synnøve; Lootz, Signe Aarthun; Johnsen, Roy.
Hydrogen Embrittlement Susceptibility of Steel Armor Wires for Flexible Pipes. International Corrosion Conference Series 2020 s. -
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9 Stenerud, Gaute; Hajilou, Tarlan; Olsen, Jim Stian; Taji, Iman; Barnoush, Afrooz; Johnsen, Roy.
The Effect of Hydrogen on the Nanoindentation Behavior of Heat Treated 718 Alloy. Metals 2020 ;Volum 10.(11) s. -
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10 Torres Rodriguez, Cristian; Hazarabedian, Maria Sofia; Quadir, Zakaria; Johnsen, Roy; Iannuzzi, Mariano.
The Role of Tungsten on the Phase Transformation Kinetics and its Correlation with the Localized Corrosion Resistance of 25Cr Super Duplex Stainless Steels. Journal of the Electrochemical Society 2020 ;Volum 167.(8) s. -
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11 Torres Rodriguez, Cristian; Iannuzzi, Mariano; Johnsen, Roy.
Use of the Critical Acidification Model to Estimate the Influence of W in the Localized Corrosion Resistance of 25Cr Super Duplex Stainless Steels. Metals 2020 ;Volum 10.(10) s. -
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2019
12 Ingdal, Mats; Johnsen, Roy; Harrington, David A..
The Akaike information criterion in weighted regression of immittance data. Electrochimica Acta 2019 ;Volum 317. s. 648-653
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13 Johnsen, Roy; Gjelseng, Linn Cecilie; Heimsæter, Martin Arne; Jernberg, Anders; Qvale, Atle H.
Influence of Manufacturing Process and Resulting Microstructure on HISC Susceptibility of 25Cr Duplex Stainless Steel Pipe. International Corrosion Conference Series 2019 s. -
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14 Johnsen, Roy; Olavesen, Henrik Horten; Hossein Zavieh, Amin; Erlien, Tomas Laugsand.
Effect of cathodic polarization on localized corrosion of 25Cr in seawater. International Corrosion Conference Series 2019 ;Volum 2019-March. s. -
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15 Kheradmand, Nousha; Rogne, Bjørn Rune Sørås; Dumoulin, Stephane; Deng, Yun; Johnsen, Roy; Barnoush, Afrooz.
Small scale testing approach to reveal specific features of slip behavior in BCC metals. Acta Materialia 2019 ;Volum 174. s. 142-152
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16 Stefansson, Njall; Dunn, John; Strand, Einar; Johnsen, Roy; Heimsæter, Martin Arne.
Performance of high strength UNS N08830 in hydrogen stress crack testing to simulate conditions arising from subsea cathodic protection. International Corrosion Conference Series 2019 ;Volum 2019-March. s. -
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17 Torres Rodriguez, Cristian; Johnsen, Roy; Østvold, Hege Kokslien; Bernås, Mia; Iannuzzi, Mariano.
Effect ofW on Phase Transformation Kinetics and its Correlation with Localized Corrosion Resistance for UNS S39274. International Corrosion Conference Series 2019 ;Volum 2019-March. s. -
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18 Wilson, Håvard; Johnsen, Roy; Torres Rodriguez, Cristian; Hesjevik, Sven Morten.
Properties of TSA in natural seawater at ambient and elevated temperature. Materials and corrosion - Werkstoffe und Korrosion 2019 ;Volum 70.(2) s. 293-306
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2018
19 Bernås, Mia; Westermann, Ida; Johnsen, Roy; Torres Rodriguez, Cristian; Jernberg, Anders; Qvale, Atle H; Iannuzzi, Manuela.
Effect of tungsten on the precipitation kinetics and localized corrosion resistance of super duplex stainless steels. International Corrosion Conference Series 2018 ;Volum 2018-April. s. 1-15
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20 Hajilou, Tarlan; Hope, Malin Sofie B.; Hossein Zavieh, Amin; Kheradmand, Nousha; Johnsen, Roy; Barnoush, Afrooz.
In situ small-scale hydrogen embrittlement testing made easy: An electrolyte for preserving surface integrity at nano-scale during hydrogen charging. International Journal of Hydrogen Energy 2018 ;Volum 43.(27) s. 12516-12529
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21 Husby, Hans; Iannuzzi, Mariano; Johnsen, Roy; Mariano, Kappes; Barnoush, Afrooz.
Effect of nickel on hydrogen permeation in ferritic/ pearlitic low alloy steels. International Journal of Hydrogen Energy 2018 ;Volum 43.(7) s. 3845-3861
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22 Husby, Hans; Wagstaff, Philip Haakon; Iannuzzi, Mariano; Johnsen, Roy; Kappes, Mariano A.
Effect of Nickel on the Hydrogen Stress Cracking Resistance of Ferritic/Pearlitic Low Alloy Steels. Corrosion 2018 ;Volum 74.(7) s. 801-818
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23 Johnsen, Roy; Lange, Torstein; Stenerud, Gaute; Olsen, Jim Stian.
Environmentally assisted degradation of spinodal copper alloy C72900. Corrosion Science 2018 ;Volum 142. s. 45-55
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24 Krogstad, Hedda Nordby; Johnsen, Roy; Coey, Michael.
Effect of a time-dependent magnetic field on the corrosion of Ni-Al bronze. Corrosion 2018 ;Volum 74.(3) s. 337-349
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25 Krogstad, Hedda Nordby; Johnsen, Roy; Coey, Michael.
Effect of a uniform magnetic field on corrosion of Ni-Al bronze in 3.5wt% NaCl. Corrosion 2018 ;Volum 74.(2) s. 197-209
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26 Ryen, Audun; Johnsen, Roy; Iannuzzi, Mariano; Årtun, Lars.
Cathodic protection by distributed sacrificial anodes - Performance at elevated temperature and in mud. International Corrosion Conference Series 2018 ;Volum 2018-April. s. 1-15
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27 Stenerud, Gaute; Johnsen, Roy; Olsen, Jim Stian.
Hydrogen stress cracking and crack initiation in precipitation hardened Ni-alloys. Engineering Failure Analysis 2018 ;Volum 89. s. 74-87
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28 Stenerud, Gaute; Wenner, Sigurd; Olsen, Jim Stian; Johnsen, Roy.
Effect of different microstructural features on the hydrogen embrittlement susceptibility of alloy 718. International Journal of Hydrogen Energy 2018 ;Volum 43.(13) s. 6765-6776
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29 Torres Rodriguez, Cristian; Kappes, Mariano A; Johnsen, Roy; Iannuzzi, Mariano.
Influence of tungsten on passivity breakdown and repassivation of 25CR super duplex stainless steel. International Corrosion Conference Series 2018 ;Volum 2018-April.
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30 Wold, Kristian; Johnsen, Roy; Iannuzzi, Mariano; Årtun, Lars.
Integrated cathodic protection (CP) sensor network development of the CP sensor. International Corrosion Conference Series 2018 ;Volum 2018-April. s. 1-13
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2017
31 Bernås, Mia; Westermann, Ida; Johnsen, Roy; Lauritsen, Christian; Iannuzzi, Mariano.
Effect of microstructure on the corrosion resistance of duplex stainless steels: Materials performance maps. International Corrosion Conference Series 2017 ;Volum 8. s. 5476-5490
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32 Farhat, Hanan; Johnsen, Roy.
Hydrogen sulfide tube failure in a seawater heat exchanger. Materials performance 2017 ;Volum 56.(9) s. 42-45
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33 Haugan, Eirik; Næss, Monika; Torres Rodriguez, Cristian; Johnsen, Roy; Iannuzzi, Mariano.
Effect of tungsten on the pitting and crevice corrosion resistance of Type 25Cr super duplex stainless steels. Corrosion 2017 ;Volum 73.(1) s. 53-67
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34 Iannuzzi, Mariano; Barnoush, Afrooz; Johnsen, Roy.
Materials and corrosion trends in offshore and subsea oil and gas production. npj Materials degradation 2017
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35 Johnsen, Roy.
Hydrogen Induced Stress Cracking of Stainless Steel in Seawater – what do we know and what is still unknown?. EUROCORR 2017; 2017-07-03 - 2017-07-07
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36 Johnsen, Roy; Nese, Ove.
AA5083 and AA6082 exposed to seawater - Effect of potential on corrosion behaviour. International Corrosion Conference Series 2017 ;Volum 3. s. 1883-1897
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37 Krogstad, Hedda Nordby; Johnsen, Roy.
Corrosion properties of nickel-aluminium bronze in natural seawater?Effect of galvanic coupling to UNS S31603. Corrosion Science 2017 ;Volum 121. s. 43-56
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38 Krogstad, Hedda Nordby; Johnsen, Roy; Coey, M.
Corrosion of nickel aluminium bronze - Effect of a uniform magnetic field. International Corrosion Conference Series 2017 ;Volum 3. s. 1968-1981
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39 Krogstad, Hedda Nordby; Skilbred, Ellen Synnøve; Johnsen, Roy.
Corrosion of nickel aluminium bronze - Effect of alloying elements and pH. International Corrosion Conference Series 2017 ;Volum 3. s. 1958-1967
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40 Quale, Geir; Iannuzzi, Mariano; Johnsen, Roy.
Cathodic protection by distributed sacrificial anodes - A new cost-effective solution to prevent corrosion of subsea structures. International Corrosion Conference Series 2017 ;Volum 2. s. 949-963
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41 Stenerud, Gaute; Johnsen, Roy; Olsen, Jim Stian; He, Jianying; Barnoush, Afrooz.
Effect of hydrogen on dislocation nucleation in alloy 718. International Journal of Hydrogen Energy 2017 ;Volum 42.(24) s. 15933-15942
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2016
42 Bengtsson Blucher, Daniel; Lange, Torstein; Venkataraman, Shankar; Asteman, Henrik; Jakobi, Dietlinde; Johnsen, Roy.
A new centrifugally cast austenitic Ni-base alloy suitable for severe sour service heavy wall thickness piping application. EUROCORR 2016; 2016-09-11 - 2016-09-15
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43 Bernås, Mia; Westermann, Ida; Johnsen, Roy; Iannuzzi, Mariano.
Microstructural evolution during isothermal heat treatment of a W-rich super duplex stainless steel. Nasjonal Konferanse for Materialteknologi; 2016-08-24 - 2016-08-25
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44 Johnsen, Roy.
Hydrogen Induced Stress Cracking of Duplex Stainless Steel under Cathodic Protection in Seawater – Historical overview and Lessons Learned. Material Science & TEchnology 2016; 2016-10-23 - 2016-10-27
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45 Johnsen, Roy; husby, hans; Barnoush, Afrooz; Iannuzzi, Mariano.
Effect of nickel in solid solution on hydrogen transport kinetics in low alloy steels. EUROCORR/16; 2016-09-11 - 2016-09-15
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46 Johnsen, Roy; Iannuzzi, Mariano.
Distributed Sacrificial Anode (DSA) – a new cost effective solution for corrosion protection of structures in seawater. Materialdagen; 2016-06-02 - 2016-06-03
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47 Johnsen, Roy; Iannuzzi, Mariano; Haugan, Eirik; Næss, Monika E.
Effect of Tungsten on Pitting and Crevice Corrosion of type 25Cr Super Duplex Stainless Steel. NACE International Corrosion 2016 Conference & Expo; 2016-03-06 - 2016-03-10
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48 Johnsen, Roy; Lange, Torstein; Olsen, Jim Stian.
Susceptibility to hydrogen embrittlement for C72900 exposed to H2S environment and under cathodic polarization in simulated seawater. EUROCORR 2016; 2016-09-11 - 2016-09-15
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49 Johnsen, Roy; Stenerud, Gaute; Barnoush, Afrooz; Olsen, Jim Stian.
In Situ Electrochemical Nanoindentation of Alloy 718. EUROCORR 2016; 2016-09-11 - 2016-09-15
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50 Kheradmand, Nousha; Johnsen, Roy; Olsen, Jim Stian; Barnoush, Afrooz.
Effect of Hydrogen on the hardness of different phases in super duplex stainless steel. International Journal of Hydrogen Energy 2016 ;Volum 41.(1) s. 704-712
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