際際滷shows by User: dgaude / http://www.slideshare.net/images/logo.gif 際際滷shows by User: dgaude / Wed, 13 Jan 2016 15:28:13 GMT 際際滷Share feed for 際際滷shows by User: dgaude CMEME2015 Conference: "Understanding hydrogen behaviour in steels" /dgaude/cmeme2015-conference-understanding-hydrogen-behaviour-in-steels a41prescmeme2015gaudefugarolasd-160113152813
Invited Plenary Presentation at CMEME2015 Conference in Biskra, Algeria, 8-9Dec2015. ABSTRACT: Small amounts of hydrogen can sometimes cause embrittlement of high strength alloys. Because of their technological and economic relevance, intense research is underway worldwide to improve our understanding of such phenomena. A physical model has been used to study hydrogen behaviour during manufacturing of metallic alloys. In particular, the present model contemplates diffusion in its most comprehensive description, i.e., atom diffusion being driven by the gradient in chemical activation, instead of simply occurring down a composition gradient. The model incorporates as well the influence of thermal history, microstructure, matrix solubility, multiple trapping distributions, and interaction with the atmosphere. Using this model is possible to describe and predict the behaviour of hydrogen in metals during real industrial processes. For instance, it explains the effect on hydrogen redistribution of parameters like treatment conditions, component size and microstructure, phase transformation temperature, grain size, carbide distribution, deformation level, etc. Furthermore, a set of criteria have been developed to anticipate defect formation and embrittlement risk, based on hydrogen supersaturation. Last but not least, a method has been developed during this work, which enables to reduce hydrogen content from the metal via the use of imposed temperature gradients. This method has recently obtained several patents. ]]>
Invited Plenary Presentation at CMEME2015 Conference in Biskra, Algeria, 8-9Dec2015. ABSTRACT: Small amounts of hydrogen can sometimes cause embrittlement of high strength alloys. Because of their technological and economic relevance, intense research is underway worldwide to improve our understanding of such phenomena. A physical model has been used to study hydrogen behaviour during manufacturing of metallic alloys. In particular, the present model contemplates diffusion in its most comprehensive description, i.e., atom diffusion being driven by the gradient in chemical activation, instead of simply occurring down a composition gradient. The model incorporates as well the influence of thermal history, microstructure, matrix solubility, multiple trapping distributions, and interaction with the atmosphere. Using this model is possible to describe and predict the behaviour of hydrogen in metals during real industrial processes. For instance, it explains the effect on hydrogen redistribution of parameters like treatment conditions, component size and microstructure, phase transformation temperature, grain size, carbide distribution, deformation level, etc. Furthermore, a set of criteria have been developed to anticipate defect formation and embrittlement risk, based on hydrogen supersaturation. Last but not least, a method has been developed during this work, which enables to reduce hydrogen content from the metal via the use of imposed temperature gradients. This method has recently obtained several patents. ]]> Wed, 13 Jan 2016 15:28:13 GMT /dgaude/cmeme2015-conference-understanding-hydrogen-behaviour-in-steels dgaude@slideshare.net(dgaude) CMEME2015 Conference: "Understanding hydrogen behaviour in steels" dgaude Invited Plenary Presentation at CMEME2015 Conference in Biskra, Algeria, 8-9Dec2015. ABSTRACT: Small amounts of hydrogen can sometimes cause embrittlement of high strength alloys. Because of their technological and economic relevance, intense research is underway worldwide to improve our understanding of such phenomena. A physical model has been used to study hydrogen behaviour during manufacturing of metallic alloys. In particular, the present model contemplates diffusion in its most comprehensive description, i.e., atom diffusion being driven by the gradient in chemical activation, instead of simply occurring down a composition gradient. The model incorporates as well the influence of thermal history, microstructure, matrix solubility, multiple trapping distributions, and interaction with the atmosphere. Using this model is possible to describe and predict the behaviour of hydrogen in metals during real industrial processes. For instance, it explains the effect on hydrogen redistribution of parameters like treatment conditions, component size and microstructure, phase transformation temperature, grain size, carbide distribution, deformation level, etc. Furthermore, a set of criteria have been developed to anticipate defect formation and embrittlement risk, based on hydrogen supersaturation. Last but not least, a method has been developed during this work, which enables to reduce hydrogen content from the metal via the use of imposed temperature gradients. This method has recently obtained several patents. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/a41prescmeme2015gaudefugarolasd-160113152813-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Invited Plenary Presentation at CMEME2015 Conference in Biskra, Algeria, 8-9Dec2015. ABSTRACT: Small amounts of hydrogen can sometimes cause embrittlement of high strength alloys. Because of their technological and economic relevance, intense research is underway worldwide to improve our understanding of such phenomena. A physical model has been used to study hydrogen behaviour during manufacturing of metallic alloys. In particular, the present model contemplates diffusion in its most comprehensive description, i.e., atom diffusion being driven by the gradient in chemical activation, instead of simply occurring down a composition gradient. The model incorporates as well the influence of thermal history, microstructure, matrix solubility, multiple trapping distributions, and interaction with the atmosphere. Using this model is possible to describe and predict the behaviour of hydrogen in metals during real industrial processes. For instance, it explains the effect on hydrogen redistribution of parameters like treatment conditions, component size and microstructure, phase transformation temperature, grain size, carbide distribution, deformation level, etc. Furthermore, a set of criteria have been developed to anticipate defect formation and embrittlement risk, based on hydrogen supersaturation. Last but not least, a method has been developed during this work, which enables to reduce hydrogen content from the metal via the use of imposed temperature gradients. This method has recently obtained several patents.
CMEME2015 Conference: "Understanding hydrogen behaviour in steels" from Daniel Gaude-Fugarolas
]]> 700 7 https://cdn.slidesharecdn.com/ss_thumbnails/a41prescmeme2015gaudefugarolasd-160113152813-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Understanding hydrogen redistribution and designing a new hydrogen extraction method /slideshow/a38-gaude-fugarolaspresukchinaforumv03ultrashort/38817740 a38gaudefugarolaspresukchinaforumv03ultrashort-140908053132-phpapp01
Understanding hydrogen redistribution and designing a new hydrogen extraction method. Presentation at 3rd UK-China Steel Research Forum Rutherford Appleton Laboratory (UK) 10-11 July 2014]]>
Understanding hydrogen redistribution and designing a new hydrogen extraction method. Presentation at 3rd UK-China Steel Research Forum Rutherford Appleton Laboratory (UK) 10-11 July 2014]]> Mon, 08 Sep 2014 05:31:32 GMT /slideshow/a38-gaude-fugarolaspresukchinaforumv03ultrashort/38817740 dgaude@slideshare.net(dgaude) Understanding hydrogen redistribution and designing a new hydrogen extraction method dgaude Understanding hydrogen redistribution and designing a new hydrogen extraction method. Presentation at 3rd UK-China Steel Research Forum Rutherford Appleton Laboratory (UK) 10-11 July 2014 <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/a38gaudefugarolaspresukchinaforumv03ultrashort-140908053132-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Understanding hydrogen redistribution and designing a new hydrogen extraction method. Presentation at 3rd UK-China Steel Research Forum Rutherford Appleton Laboratory (UK) 10-11 July 2014
Understanding hydrogen redistribution and designing a new hydrogen extraction method from Daniel Gaude-Fugarolas
]]> 488 5 https://cdn.slidesharecdn.com/ss_thumbnails/a38gaudefugarolaspresukchinaforumv03ultrashort-140908053132-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Daniel Gaude-Fugarolas @ HSLA2011 /slideshow/draft-preshsla2011-v05/16674943 draftpreshsla2011v05-130221105443-phpapp01
Understanding hydrogen redistribution during steel casting, and its effective extraction by thermally induced up-hill diffusion. Presented at High Strength Low Alloy Steels International Conference 2011 in Beijing. ]]>
Understanding hydrogen redistribution during steel casting, and its effective extraction by thermally induced up-hill diffusion. Presented at High Strength Low Alloy Steels International Conference 2011 in Beijing. ]]> Thu, 21 Feb 2013 10:54:43 GMT /slideshow/draft-preshsla2011-v05/16674943 dgaude@slideshare.net(dgaude) Daniel Gaude-Fugarolas @ HSLA2011 dgaude Understanding hydrogen redistribution during steel casting, and its effective extraction by thermally induced up-hill diffusion. Presented at High Strength Low Alloy Steels International Conference 2011 in Beijing. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/draftpreshsla2011v05-130221105443-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Understanding hydrogen redistribution during steel casting, and its effective extraction by thermally induced up-hill diffusion. Presented at High Strength Low Alloy Steels International Conference 2011 in Beijing.
Daniel Gaude-Fugarolas @ HSLA2011 from Daniel Gaude-Fugarolas
]]> 329 3 https://cdn.slidesharecdn.com/ss_thumbnails/draftpreshsla2011v05-130221105443-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 Gaude-Fugarolas @ METAL2010 /slideshow/gaudefugarolas-metal2010/6773055 gaudefugarolasmetal2010-110201045234-phpapp02
Article presented at International Conference METAL2010, by D. Gaude-Fugarolas. Czech Republic. May 2010.]]>
Article presented at International Conference METAL2010, by D. Gaude-Fugarolas. Czech Republic. May 2010.]]> Tue, 01 Feb 2011 04:52:22 GMT /slideshow/gaudefugarolas-metal2010/6773055 dgaude@slideshare.net(dgaude) Gaude-Fugarolas @ METAL2010 dgaude Article presented at International Conference METAL2010, by D. Gaude-Fugarolas. Czech Republic. May 2010. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/gaudefugarolasmetal2010-110201045234-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Article presented at International Conference METAL2010, by D. Gaude-Fugarolas. Czech Republic. May 2010.
Gaude-Fugarolas @ METAL2010 from Daniel Gaude-Fugarolas
]]> 220 1 https://cdn.slidesharecdn.com/ss_thumbnails/gaudefugarolasmetal2010-110201045234-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post http://activitystrea.ms/schema/1.0/posted 0 https://public.slidesharecdn.com/v2/images/profile-picture.png Expert in Physical Metallurgy, Materials Science and Engineering dgaude.sdf-eu.org https://cdn.slidesharecdn.com/ss_thumbnails/a41prescmeme2015gaudefugarolasd-160113152813-thumbnail.jpg?width=320&height=320&fit=bounds dgaude/cmeme2015-conference-understanding-hydrogen-behaviour-in-steels CMEME2015 Conference: ... https://cdn.slidesharecdn.com/ss_thumbnails/a38gaudefugarolaspresukchinaforumv03ultrashort-140908053132-phpapp01-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/a38-gaude-fugarolaspresukchinaforumv03ultrashort/38817740 Understanding hydrogen... https://cdn.slidesharecdn.com/ss_thumbnails/draftpreshsla2011v05-130221105443-phpapp01-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/draft-preshsla2011-v05/16674943 Daniel Gaude-Fugarolas...