Effect of high-pressure torsion on hydrogen trapping in Fe–0.01 mass% C and type 310S austenitic stainless steel / Yoji Mine in Acta materialia, Vol. 58 N° 2 (Janvier 2010)  

Public ISBD [article]  inActa materialia > Vol. 58 N° 2 (Janvier 2010) . - pp. 649-657 Titre : Effect of high-pressure torsion on hydrogen trapping in Fe–0.01 mass% C and type 310S austenitic stainless steel Type de document : texte imprimé Auteurs : Yoji Mine, Auteur ; Zenji Horita, Auteur ; Yukitaka Murakami, Auteur Article en page(s) : pp. 649-657 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : High-pressure torsion Hydrogen Grain boundaries Dislocations Iron Index. décimale : 669 Métallurgie Résumé : The effect of high-pressure torsion (HPT) on hydrogen trapping in Fe–0.01 mass% C and type 310S stainless steel was studied by metallographic characterization and hydrogen measurement after hydrogen gas charging. Hardening of both materials after processing by HPT was achieved through grain refinement. Hydrogen trapping in the Fe–0.01 mass% C was significantly increased by HPT processing, because of high binding energies of hydrogen with lattice defects such as dislocations and grain boundaries in body-centred cubic iron. In the type 310S processed by HPT, the hydrogen content that trapped by dislocations was less than that dissolved within the lattice and the contribution of grain boundaries on hydrogen trapping can be neglected. In the stable austenitic stainless steel processed by HPT, decreasing the dislocation density can reduce the trapped hydrogen to the solution-treated level while the hardening by grain refinement is retained. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235556%23 [...] [article] Effect of high-pressure torsion on hydrogen trapping in Fe–0.01 mass% C and type 310S austenitic stainless steel [texte imprimé] / Yoji Mine, Auteur ; Zenji Horita, Auteur ; Yukitaka Murakami, Auteur . - pp. 649-657. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 2 (Janvier 2010) . - pp. 649-657 Mots-clés : High-pressure torsion Hydrogen Grain boundaries Dislocations Iron Index. décimale : 669 Métallurgie Résumé : The effect of high-pressure torsion (HPT) on hydrogen trapping in Fe–0.01 mass% C and type 310S stainless steel was studied by metallographic characterization and hydrogen measurement after hydrogen gas charging. Hardening of both materials after processing by HPT was achieved through grain refinement. Hydrogen trapping in the Fe–0.01 mass% C was significantly increased by HPT processing, because of high binding energies of hydrogen with lattice defects such as dislocations and grain boundaries in body-centred cubic iron. In the type 310S processed by HPT, the hydrogen content that trapped by dislocations was less than that dissolved within the lattice and the contribution of grain boundaries on hydrogen trapping can be neglected. In the stable austenitic stainless steel processed by HPT, decreasing the dislocation density can reduce the trapped hydrogen to the solution-treated level while the hardening by grain refinement is retained. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235556%23 [...]

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