How does hydrogen affect the mechanical behavior of metals and alloys?

It has long been understood that #hydrogen has a negative effect on metals like iron and steel. Studying this phenomenon is not easy because of the fact that hydrogen is everywhere, is extremely small and is in constant motion. In this video, MARÍA JAZMIN DUARTE CORREA explains how new technologies can help to pin down the impact of hydrogen in this context. Focusing on the particular challenges involved in studying diffusible hydrogen, Duarte explains how nano #indentation can be used to specifically identify its effects. Looking forward, the research seeks to support the development of materials that are resistant to deformation caused by hydrogen. This has particular relevance for the #energy sector where the storage and transportation of hydrogen presents a pressing challenge.
Original publication: rdcu.be/chPoD
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[@tharciszaaruolo5550]

Interesting topic! Also easy to follow as a Materials Science student. Wouldn't mind if you would go more into depth concerning the theory :) Big supporter of your videos here!

[@mpisusmat]

Thank you - we will try to keep that in mind :)

[@anthonydalisay450]

I would like to hear more about your research in hydrogen embrittlement. This topic is being overlooked over the past years without realising how relevant this is in the material and welding industry.

[@mpisusmat]

Thanks for reaching out. Please have a look at these two links where we summed up our research on hydrogen and hydrogen embrittlement: www.mpie.de/4595091/all-about-hydrogen www.mpie.de/4200660/materials-under-harsh-environments-and-their-stability-of-surfaces-and-interfaces

[@Raferkong]

Hi, appreciate your insight on this question, usually we consider hydrogen embrittlement on high strength steel, however for low strength material, like 245mpa line pipe, is there any research been done to simulate cold damage (say during handling or shipment) and subject to heat? say if a 245Mpa pipe, had damage during transport, and then went into galvanising with heat, would there be hydrogen embrittlement from HCL of the pickling process in galvanising?

[@EddieVBlueIsland]

Hydrogen embrittlement is really a form of LME (liquid metal embrittlement) driven by electron structure - helium has no effect on metals since it diffuses very slowly through most metals with out interaction, likewise some metals are embrittled very easily vis. aluminum embrittled by gallium and mercury - steel/iron with molten copper by nickel does no seem to embrittle anything.

[@Nice_Person7379]

What happens if you spray paint the metal?

[@mpisusmat]

If you mean using coatings as corrosion protection: this is done since a long time, e.g. think about coatings for metal sheets. However, we are also working on more efficient coatings and also on questions concerning scratches in coatings, thus locally ineffective corrosion-protection.

[@drury2d8]

NASA's learning it the hard way. 😉

[@warrennicholls8599]

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