A Grain Size Dependence of a Creep Deformation of Tungsten Containing High Chromium Ferriric Creep Resistant Steel.

DOI Web Site 2 Citations 18 References

Bibliographic Information

Other Title
  • Ｗ含有高Ｃｒフェライト系耐熱鋼のクリープ変形と結晶粒径
  • W ガンユウ コウCr フェライトケイ タイネツ コウ ノ クリープ ヘンケイ ト ケッショウ リュウケイ

Search this article

Description

Grain size dependence of creep rupture strength and creep strain rate was experimentally decided for tungsten containing 11% chromium ferritic steels at elevated temperatures. A different forging ratio for the same cast ingot following the same heat treatment extracted the grain size effect of temepered martensitic microstructure on a creep deformation rate and a microstructure evolution during the creep. Fine block grain increased the nucleation site of intergranular ferrite during the creep which was observed through Transmission Electron Microscope for thin foils prepared from ruptured specimens. Grain boundary microstructure recovery was explained by modified “core-mantle-model”, proposed by Terada et al., assuming the mantle width increase during the creep deformation in ferritic microstructure equivalent to a grain boundary slip or a grain boundary diffusion mechanism for austenitic microstructure.

Journal

Citations (2)*help

See more

References(18)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top