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Helena Alves
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Proceedings Papers

On the Sea Water Corrosion Resistance of Alloy 825 CTP (UNS N08827), an Improved Version of Alloy 825 (UNS N08825)

Julia Botinha, Katharina Utens, Philipp Huebner, Daniela Zander, Helena Alves
Paper presented at the AMPP Annual Conference + Expo, March 3–7, 2024
Paper Number: AMPP-2024-20983
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View Paper titled, On the Sea Water Corrosion Resistance of Alloy 825 CTP (UNS N08827), an Improved Version of Alloy 825 (UNS N08825)
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Proceedings Papers

Optimization of UNS N08034 in the Cold Worked Condition for Use in the Oil and Gas Industry

Philipp Hübner, Bodo Gehrmann, Julia Botinha, Helena Alves
Paper presented at the AMPP Annual Conference + Expo, March 3–7, 2024
Paper Number: AMPP-2024-20938
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View Paper titled, Optimization of UNS N08034 in the Cold Worked Condition for Use in the Oil and Gas Industry
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Proceedings Papers

Hardness and Nickel-Based Alloys

Robert Badrak, Julia Botinha, John Groth, Helena Alves
Paper presented at the AMPP Annual Conference + Expo, March 19–23, 2023
Paper Number: AMPP-2023-18806
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View Paper titled, Hardness and Nickel-Based Alloys
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Proceedings Papers

Initiation Sites of Pitting Corrosion in the Nickel Alloy UNS N07718

Julia Botinha, Bodo Gehrmann, Helena Alves, Michael Rohwerder
Paper presented at the AMPP Annual Conference + Expo, March 19–23, 2023
Paper Number: AMPP-2023-18846
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View Paper titled, Initiation Sites of Pitting Corrosion in the Nickel Alloy UNS N07718
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Proceedings Papers

On the Weldability and Corrosion Resistance of Alloy UNS N08827 – A Further Improvement of Alloy UNS N08825

Julia Botinha, Martin Wolf, Helena Alves
Paper presented at the AMPP Annual Conference + Expo, March 19–23, 2023
Paper Number: AMPP-2023-18847
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View Paper titled, On the Weldability and Corrosion Resistance of Alloy UNS N08827 – A Further Improvement of Alloy UNS N08825
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Proceedings Papers

Development of the High Strength Cold Worked Super Austenitic Stainless Steel UNS N08034 for Challenging Oilfield Environments

Julia Botinha, Clara Herrera, Bodo Gehrmann, Helmuth Sarmiento Klapper, Merlin Seifert, Helena Alves
Paper presented at the AMPP Annual Conference + Expo, March 6–10, 2022
Paper Number: AMPP-2022-17720
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View Paper titled, Development of the High Strength Cold Worked Super Austenitic Stainless Steel UNS N08034 for Challenging Oilfield Environments
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Proceedings Papers

A Theoretical Investigation on the Role of Microstructural Particularities on the Hydrogen Embrittlement of Nickel Alloys

Julia Botinha, Helena Alves, Bodo Gehrmann
Paper presented at the AMPP Annual Conference + Expo, March 6–10, 2022
Paper Number: AMPP-2022-17718
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View Paper titled, A Theoretical Investigation on the Role of Microstructural Particularities on the Hydrogen Embrittlement of Nickel Alloys
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Proceedings Papers

Evaluating the Corrosion Performance of Materials in Solar Nitrate Salts

Keenan O'Neill, John Groth, Helena Alves, Dev Chidambaram
Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16570
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View Paper titled, Evaluating the Corrosion Performance of Materials in Solar Nitrate Salts
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Proceedings Papers

Hydrogen Embrittlement of Oil Patch Alloy 718 and its Correlation to the Microstructure

Julia Botinha, Bodo Gehrmann, Helena Alves
Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16393
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View Paper titled, Hydrogen Embrittlement of Oil Patch Alloy 718 and its Correlation to the Microstructure
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Proceedings Papers

Sensitization Resistance of Alloy UNS N08825 after Different Mill-Annealing Temperatures and Times

Julia Botinha, Bodo Gehrmann, Peter Maas, Helena Alves
Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16395
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View Paper titled, Sensitization Resistance of Alloy UNS N08825 after Different Mill-Annealing Temperatures and Times
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Proceedings Papers

Characterization of Additively Manufactured Parts of Alloy UNS N07718 in the API 6ACRA Chemical Composition

Julia Botinha, Bodo Gehrmann, Christina Schmidt, Helena Alves
Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16403
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View Paper titled, Characterization of Additively Manufactured Parts of Alloy UNS N07718 in the API 6ACRA Chemical Composition
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Proceedings Papers

Alloy UNS N08827: a New and Advanced Version of Alloy UNS N08825 with Better Corrosion and Hot Cracking Resistance

Julia Botinha, Bodo Gehrmann, Martin Wolf, Helena Alves
Paper presented at the CORROSION 2021, April 19–30, 2021
Paper Number: NACE-2021-16398
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View Paper titled, Alloy UNS N08827: a New and Advanced Version of Alloy UNS N08825 with Better Corrosion and Hot Cracking Resistance
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Proceedings Papers

Influence of the Hardening Phases on the Hydrogen Embrittlement Susceptibility of Ni-Alloys Based on UNS N07718

Julia Botinha, Bodo Gehrmann, Helena Alves
Paper presented at the CORROSION 2020, June 14–18, 2020
Paper Number: NACE-2020-14667
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View Paper titled, Influence of the Hardening Phases on the Hydrogen Embrittlement Susceptibility of Ni-Alloys Based on UNS N07718
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Proceedings Papers

Effect of Sensitization on the Corrosion Resistance of an Advanced Version of Alloy UNS N08825

Julia Botinha, Julia Krämer, Georgi Genchev, Christoph Bosch, Helena Alves
Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-12729
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View Paper titled, Effect of Sensitization on the Corrosion Resistance of an Advanced Version of Alloy UNS N08825
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Proceedings Papers

Study of Phase Distribution on Alloy UNS N07718 in Different Hardening Conditions and Its Relationship With Hydrogen Embrittlement Susceptibility

Julia Botinha, Helena Alves, Cecilia Solís, Artem Feoktystov, Bodo Gehrmann, Ralph Gilles, Johannes Munke, Volodymyr Baran
Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13025
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View Paper titled, Study of Phase Distribution on Alloy UNS N07718 in Different Hardening Conditions and Its Relationship With Hydrogen Embrittlement Susceptibility
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Proceedings Papers

Role of Carbon on the CPT of UNS N07718 Exposed to Chloride Environments at HP-HT Using ECN and In-Situ Microscopy

Luis F. Garfias-Mesias, Julia Botinha, Helmuth Sarmiento Klapper, Helena Alves
Paper presented at the CORROSION 2019, March 24–28, 2019
Paper Number: NACE-2019-13531
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View Paper titled, Role of Carbon on the CPT of UNS N07718 Exposed to Chloride Environments at HP-HT Using ECN and In-Situ Microscopy
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Proceedings Papers

Material Selection and Recent Case Histories With Nickel Alloys

Helena Alves
Paper presented at the CORROSION 2018, April 15–19, 2018
Paper Number: NACE-2018-11600
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Proceedings Papers

The Sensitisation Behaviour of Alloy UNS N08825 after Heat Treatment as Used in Clad Materials

Helena Alves, Julia Rosenberg, Peter Maas
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9459
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View Paper titled, The Sensitisation Behaviour of Alloy UNS N08825 after Heat Treatment as Used in Clad Materials
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Proceedings Papers

Recent Experiences with UNS N08031 plus Roll Bond Cladding

Helena Alves, Franz Winter
Paper presented at the CORROSION 2017, March 26–30, 2017
Paper Number: NACE-2017-9470
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View Paper titled, Recent Experiences with UNS N08031 plus Roll Bond Cladding
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Proceedings Papers

UNS N08031 and UNS N08031 Plus, Multipurpose Alloys for the Chemical Process Industry and Related Applications

Helena Alves, Rainer Behrens, Franz Winter
Paper presented at the CORROSION 2016, March 6–10, 2016
Paper Number: NACE-2016-7563
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View Paper titled, UNS N08031 and UNS N08031 Plus, Multipurpose Alloys for the Chemical Process Industry and Related Applications
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