後熱処理したTiC被覆鋼のX線残留応力分布測定(<小特集>X線材料強度小特集)

概要

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The development of ceramic coating to metals was stimulated by the need for high temperature, wear and corrosion resistant materials. Recently TiC is used as a ceramic coating material. In the present study, the X-ray method was successfully applied to measure the residual stress distribution in TiC coated steels. The X-ray elastic constants were determined and compared with the mechanically measured values. The results obtained are summarized as follows ; (1) The X-ray elastic constants determined were As-coated : Sl=3.97×10^4 (GPa^<-1>), S_2/2=2.92×10^<-3> (GPa^<-1>) Quenched: S_2/2=1.89×10^<-3> (GPa^<-1>) Annealed : S_2/2=2.07×10^<-3> (GPa^<-1>) Quenched and Tempered: S_2/2=1.13×10^<-3> (GPa^<-1>) for TiC (113) phase. And As-coated E_<x-ray> was 397 (GPa) which was lower than the mechanically determined value of 421 (GPa), respectively. (2) The residual stress distribution determined by the X-ray method indicated high compressive stress above -1.5〜3.5 (GPa) in the TiC Iayer.
1990-06-15