Hydrogen Permeability and Delayed Failure of Polarized Martensitic Steels

Effect of Hydrogen on Toughening of a Low Alloy Steel

“…1,2) Steels under an applied stress, in the presence of hydrogen, may behave in strangely different manners which are not only dependant on the chemistry, microstructure, processing history, impurity content and strength level of a steel but also on the hydrogenation and stressing conditions. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] The present paper represents a portion of the study on mechanical behaviours of a low alloy steel with different ferrite grain sizes, hydrogenated by electrolytic charging under widely different conditions.…”

Effect of hydrogen on metals. [Causes, mechanisms, and prevention; 59 refs]

“…44 The decreasing s u s c e p t i b i l i t y w i t h i n c r e a s i n g temperature a t any given hydrogen c o n c e n t r a t i o n i s caused by an exponential d e c r e a s e of t h e r a t i o CL/C with temperature. The r a t i o approaches 1 as T i n c r e a s e s , and, f o r a given amount of d i s l o c a t i o n motion, l e s s hydrogen i s t r a n s p o r t e d a t t h e h i g h e r temperature.…”