Academic literature on the topic 'Hydrogen embrittlement of metals'

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Dissertations / Theses on the topic "Hydrogen embrittlement of metals"

1

Stroe, MIOARA ELVIRA. "Hydrogen embrittlement of ferrous materials." Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210889.

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This work deals with the damage due to the simultaneous presence of hydrogen in atomic form and stress – straining.<p>The aim of this work is twofold: to better understand the hydrogen embrittlement mechanisms and to translate the acquired knowledge into a more appropriate qualification test. <p>The phenomena of hydrogen entry and transport inside the metals, together with the different types of damages due to the presence of hydrogen, are presented.<p>The analysis of the most important models proposed up to now for hydrogen embrittlement (HE) indicated that the slow dynamic plastic straining
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Hsieh, Jang-Hsing. "Hydrogen embrittlement of cold worked plain carbon steel." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/12016.

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Jothi, Sathiskumar. "Multiscale modelling and experimentation of hydrogen embrittlement in aerospace materials." Thesis, Swansea University, 2015. https://cronfa.swan.ac.uk/Record/cronfa42212.

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Pulse plated nickel and nickel based superalloys have been used extensively in the Ariane 5 space launcher engines. Large structural Ariane 5 space launcher engine components such as combustion chambers with complex microstructures have usually been manufactured using electrodeposited nickel with advanced pulse plating techniques with smaller parts made of nickel based superalloys joined or welded to the structure to fabricate Ariane 5 space launcher engines. One of the major challenges in manufacturing these space launcher components using newly developed materials is a fundamental understand
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Dowson, A. L. "Some aspects of hydrogen absorption and hydrogen embrittlement in alpha titanium." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382542.

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Buntain, Ryan John. "Effect of Microstructure on Hydrogen Assisted Cracking in Dissimilar Welds of Low Alloy Steel Pipes Joined with Nickel Based Filler Metals." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1577785066479763.

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Brahimi, Salim. "Effect of surface processing variables on hydrogen embrittlement of steel fasteners." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112560.

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Incremental step load testing was used in accordance with ASTM F1940 to rank a number coating processes used in the fastener industry for their propensity to cause internal hydrogen embrittlement. The results showed that coating permeability has a first order effect, while the quantity of hydrogen introduced by the process has a second order effect. Pure zinc electroplating processes, alkaline and acid, were found to be the most embrittling, owing to the low permeability of zinc. The least embrittling processes were zinc-nickel, alkaline and acid, owing to the high permeability of Zn-Ni coatin
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Uehara, André Yugou. "Fragilização por hidrogênio de parafusos cementados." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265279.

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Orientador: Itamar Ferreira<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-18T17:02:04Z (GMT). No. of bitstreams: 1 Uehara_AndreYugou_M.pdf: 4445631 bytes, checksum: ba69e40eee3a8de5233ab826f19564d7 (MD5) Previous issue date: 2011<br>Resumo: Este trabalho tem por objetivo investigar a etapa de decapagem ácida e os processos de desidrogenação e retrabalho realizados durante a zincagem de parafusos quanto à fragilização por hidrogênio. Parafusos fabricados conforme a norma JIS B 1127 (1995), cementados, de
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Carvalho, Ícaro Zanetti de. "Fragilização por hidrogênio nos aços AISI 4340 (AMS 6414K e AMS 6415S) temperados e revenidos." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263642.

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Orientadores: Célia Marina de Alvarenga Freire, Itamar Ferreira<br>Dissertação (mestrado - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-20T02:38:33Z (GMT). No. of bitstreams: 1 Carvalho_IcaroZanettide_M.pdf: 13083038 bytes, checksum: c152edb400a89f8aecfa16c8073e6488 (MD5) Previous issue date: 2012<br>Resumo: O fenômeno da fragilização por hidrogênio no aço AISI 4340 foi investigado devido ao fato do mesmo ser um aço baixa liga de alta resistência bastante suscetível a este fenômeno. A análise foi feita por meio do ensaio de tenaci
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Nigro, Claudio F. "Phase field modeling of flaw-induced hydride precipitation kinetics in metals." Licentiate thesis, Malmö högskola, Institutionen för materialvetenskap och tillämpad matematik (MTM), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-7787.

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Hydrogen embrittlement can manifest itself as hydride formation in structures when in contact with hydrogen-rich environments, e.g. in space and nuclear power applications. To supplant experimentation, modeling of such phenomena is beneficial to make life prediction reduce cost and increase the understanding. In the present work, two different approaches based on phase field theory are employed to study the precipitation kinetics of a second phase in a metal, with a special focus on the application of hydride formation in hexagonal close-packed metals. For both presented models, a single compo
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Fraga, Francisco Edson Nogueira. "Variaveis de influencia do teste G-BOP." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263151.

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Orientador: Roseana da Exaltação Trevisan<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-08-05T03:36:29Z (GMT). No. of bitstreams: 1 Fraga_FranciscoEdsonNogueira_M.pdf: 7668507 bytes, checksum: 806c3c771652dfe2aa90373e2fca42ba (MD5) Previous issue date: 2005<br>Resumo: Trinca induzida por hidrogênio é um dos defeitos mais graves que ocorrem em juntas soldadas de diversos aços. Esta falha mecânica ocorre com bastante freqüência na zona afetada pelo calor (ZAC) destes materiais. Com o desenvolvimento de novos
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