engleski

The Susceptibility to Hydrogen Embrittlement of Low Alloy Cr-Mo Steel Tubing

In the paper the results of research in the susceptibility of as-rolled and heat treated low alloy Cr-Mo (microalloy by Nb) tubing to hydrogen embrittlement by method of cathodic polarization are shown. The results show that quenching at 870oC (both in water and oil) and tempering at high temperature (720oC) attain excellent resistance to hydrogen embrittlement which is indicated by a small embrittlement indeks (11.1- 23.6%) by tough small-dimple fractures and relatively small content of absorbed hydrogen (3.2-3.4 ppm) at the cathodic polarization.

low alloy steel, tubing, hydrogen embrittlement, heat treatment, cathodic polarization

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