The Effect of Carburization of the Fatigue of Low Carbon Steel

침탄(浸炭)이 저탄소강(低炭素鋼)의 피로(疲勞)에 미치는 영향(影響)

  • Published : 1973.12.01

Abstract

The effects of carburization on the fatigue strength and cracks were studied. The fatigue phenomena of the carburized specimens were compared with noncarburized specimens those were either heat-treated or un-treated. The fatigue strength of these specimens were measured by rotating bending fatigue machine. The obtained results indicated that the fatigue strength of carburized specimens were increased ranging from 24-59 % than those of un-treated, and 22-38% than those of heat-treated. The Vickers hardness of carburized were also increased as much as 138-195% than those of un-treated, and 42-125% than those of heat-treated. The microscopic observation of the carburized specimens mostly composed of minute pearlitic structure at hard case exhibited to have more localized slip than those of non-carburized specimens.

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