ディーゼルエンジン用バルブシート材料(Fe-Cr鋼/TiN焼結複合材料)のX線応力測定

概要

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A fundamental study was carried out for applying the method of the X-ray stress measurement to a composite material consisted of high chromium steel and titanium nitride manufactured by the powder metallurgy. The materials used in this study has been developed for the valve seat insert, which is a part of diesel engines in automobiles, because of its high wear-resistance and heatresistance. The influence of the volume fraction of titanium nitride on the composite X-ray elastic constants and each phase stresses was investigated. X-ray diffraction data obtained from both phases were compared to the Eshelby/Mori-Tanaka model, which was developed by Lin and Mura et al based on Eshelby approach and Mori-Tanaka theorem. It was found that the relation between the composite X-ray elastic constants and the volume fraction of the second phase agrees well with the theoretical estimation.
社団法人日本機械学会の論文
1998-01-25