Since during a hot hold the composition of the grains at the boundaries changes, becoming enriched with certain impurity elements, the question arises of the influence of the degree of development of grain boundary impurity segregations on the sensitivity of steels to hydrogen embrittlement. Type 20Kh3N chrome-nickel steel, which possesses a high tendency toward temper brittleness, was selected for the investigations. The specimens, separated into several lots, were aged at ...
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