[MW:1983] Re: effect of H on notch strength

This is the effect of hydrogen contents in HAZ Strength

In the HAZ which is having permissible value of Hydrogen there is no
effect on tensile strength as the temprature changes .

But in hydrogen contained HAZ the stress due to hydrogen reaches the
yield point of material when it is in between the temperature of 0 to
100 degree, beyond this temperature again the effect decreases where
hydrogen disassociate and stress due to this decreases , similarly at
lower temperature there is very less activity or we can say movement
of hydrogen which decrease the effect of hydrogen embrittlement.
Diffusion rate is temperature based phenomenon , so there is less
diffusion at lower temperature.

On Apr 18, 3:31 pm, Ali Asghari <asghari...@rocketmail.com> wrote:
> hi
> can anybody explain about this picture?
> rgds.
>
>  2-2.png
> 41KViewDownload

--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
-~----------~----~----~----~------~----~------~--~---