Stronger, hydrogen-resistant steel for demanding environments

[@asumazilla]

Great video. Beautiful shots to match your research :)

[@tommieeriksson271]

What is the name of this new alloy?

[@bhadeshia123]

www.phase-trans.msm.cam.ac.uk/2019/abrasion.html

[@MTim-vj7xg]

when hydrogen in traps reach saturation, it can enter into the matrix from environment,and will embrittle the steel. it seems like that traps cann't prevent hydrogen embrittlement in those situation. is it right?

[@bhadeshia123]

+M. Tim www.msm.cam.ac.uk/phase-trans/2016/prevention.html

[@bhadeshia123]

+M. Tim Good thinking batman!

[@MTim-vj7xg]

Why the hydrogen concentrate at crack tip can embrittle the steel and alter the fracture mechanism?

[@bhadeshia123]

+M. Tim The stress field attracts hydrogen

[@MTim-vj7xg]

+bhadeshia123 why hydrogen is attracted at the stress field can embrittle the steel ?

[@bhadeshia123]

There are many different mechanisms - you need to do a literature review.

[@EddieVBlueIsland]

Nobody really knows - some believe the s1 electron in hydrogen changes the metallic bond to an ionic bond halting dislocation movement. others the hydrogen precipitates as a gas between the grains and simply splits the grains by over-pressure. BTW it is believed that only tensile stresses and not shear or compression (- stress) attract hydrogen.

[@andresereno]

really amazing, the job you are doing! keep on!

[@bhadeshia123]

Thank you!

[@Cluni-80s]

it sucks when u see where these people are, while you still trying to figure out ASME and AWS material grouping and P-number and stuff lol