915 表面改質を施した高速度工具鋼 SKH-51 の疲労信頼性

概要

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Influence of Hybrid DLC coating on the fatigue strength of High-speed tool steel SKH-51 was investigated with residual stress. The rotating-bending fatigue test in air was conducted using the smooth specimen of SKH-51 and with Hybrid DLC coating. The main results were as follows. The fatigue strength of Hybrid DLC coated specimen was inferior to virgin specimen by released compressive residual stress from heat history. The amendment fatigue test was using low tempered specimen that was released compressive residual stress. As a result of the fatigue examination, it was shorter than unsettled material and the fatigue life longer than hybrid processing material was acquired. It was in agreement with the size of the compression stress, which remained to each specimen before the examination, and it turns out that the relevance is very strong.
一般社団法人日本機械学会の論文
2002-08-23