Microstructure of creep-deformed V-4Cr-4Ti strengthened by precipitation and cold rolling

T. Muroga, T. Nagasaka, J. M. Chen, Y. F. Li, H. Watanabe

研究成果: ジャーナルへの寄稿学術誌査読

13 被引用数 (Scopus)

抄録

The microstructural processes were investigated for V-4Cr-4Ti alloys strengthened by precipitation and cold rolling during thermal creep deformation and thermal aging in identical conditions at 1023 K. Cold rolling to precipitate-hardened V-4Cr-4Ti can suppress precipitate coarsening during the following high temperature aging. The dislocations observed were mixture of a〈1 0 0〉 and a/2〈1 1 1〉 types in the specimens with only thermal aging, and predominantly of a/2〈1 1 1〉 type in the specimens after the creep deformation. Coarsening of the precipitates was observed after the creep deformation. It seems to be essential to avoid the recovery of sessile a〈1 0 0〉 type dislocations induced by cold rolling for the purpose of maintaining the high temperature strength.

本文言語英語
ページ(範囲)606-609
ページ数4
ジャーナルJournal of Nuclear Materials
386-388
C
DOI
出版ステータス出版済み - 4月 30 2009

!!!All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 材料科学(全般)
  • 原子力エネルギーおよび原子力工学

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