OS-402 Effect of Residual Strain and Recrystallization Temperature on Recrystallization Behavior of ODS Alloy(Organized Session 4: Advanced Materials and Coatings)

概要

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Oxide dispersion strengthened (ODS) alloys are expected to be applied for advanced gas turbine components, because of excellent high temperature strength. In order to obtain such a high temperature strength, it is necessary to make a coarse elongated grain structure by the secondary recrystallization, which is influenced by the residual strain distribution induced at consolidation processes. But the relationship between quantity of residual strain and secondary recrystallization behavior of ODS alloys has not been well understand. In this paper, the residual strain distribution of nickel-based ODS bars consolidated by hot extrusion was quantitatively estimated by using micro X-ray diffraction analysis. As a result of X-ray analysis and estimation of recrystallization behavior, there was a good relationship between the residual strain and the recrystallization behavior.
公益社団法人日本ガスタービン学会の論文
1999-11-14