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

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)606-609
Number of pages4
JournalJournal of Nuclear Materials
Volume386-388
Issue numberC
DOIs
Publication statusPublished - Apr 30 2009

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Fingerprint Dive into the research topics of 'Microstructure of creep-deformed V-4Cr-4Ti strengthened by precipitation and cold rolling'. Together they form a unique fingerprint.

Cite this