Deformation twinning induced by micropores in TMS-75 superalloy

F. Sun, S. Zhang, S. Tian, J. Zhang, H. Harada

研究成果: Article査読

抄録

Thermomechanical cycling was performed in single crystal superalloy TMS-75 to investigate the detailed microstructural evolution. An interesting phenomenon shows that the area around the micropores tends to create many deformation twins, while the area far from the micropores exhibits few deformation twins. To interpret this feature, finite element analysis of the stress field around micropores proceeded, which gives the results that the stress isoline near the micropores region appears the feature of the acetabuliform distribution and possesses the bigger stress value at 45° angle direction relative to the applied stress axis. In addition, theoretical calculations were further conduced in an effort to clarify the critical conditions for twinning in Ni based single crystal superalloys. The feature that a high density of deformation twins occurs in the area around the micropores in superalloy TMS-75 results from the stress concentration in the region around the micropores.

本文言語English
ページ(範囲)237-242
ページ数6
ジャーナルMaterials Science and Technology (United Kingdom)
31
2
DOI
出版ステータスPublished - 2015 1 1
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

フィンガープリント

「Deformation twinning induced by micropores in TMS-75 superalloy」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル