i am a welding engg student and doing project on hydrogen cracking
of cr-mo steel by using implant test method.
the following result were observed
electrode diff hydrogen
level critical stress
E6013 (ruttile type) 5
ml 456 mpa
E9015 B9
10.6ml 500 mpa
according to theory if hydrogen level increases critical cracking
stress will decreases but in my exp critical cracking stress is coming
more in low level of hydrogen
i would like to have your comment on this result
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