MECHANICAL TESTING OF A HYDROGEN EMBRITTLED STEEL
Abstract
The paper presents a series of mechanical tests on specimens made of X 65 PSL 2 steel. Specimens were taken from a slab, obtained at a continuous casting machine. In addition to the metallurgical hydrogen (already in steel following the processes of the steelmaking and casting) a part of specimens have been hydrogenated by keeping them for different time periods into hydrogen sulfide. It is known that the presence of hydrogen in steel leads to its embrittlement, and thus its physico-mechanical properties diminish smaller. Impact and hardness tests tried to highlight this aspect in connection to hydrogenation time. Results obtained confirm that the mechanical properties of the tested steel were degraded with the increase of the hydrogenation time.
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