Dynamic strain aging in biomedical Co-Cr-Mo-based alloys with nitrogen doping

Kenta Yamanaka, Manami Mori, Yunping Li, Yuichiro Koizumi, Akihiko Chiba

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

The plastic deformation behavior of a biomedical Co-29Cr-6Mo-0.2N (wt.%) alloy with a fully ? (fcc) matrix was studied by compression tests from room temperature to 1073 K. Serrated stress-strain curves caused by dynamic strain aging (DSA) was clearly observed at temperatures of 773-973 K at a strain rate of 10-4 s-1. Such a flow behavior was not observed significantly in other conditions. Electron backscatter diffraction (EBSD) analysis revealed that deformation microstructures with DSA occurrence exhibited a large lattice distortion over the grains, while local strain preferentially increased in the vicinity of grain boundaries in the specimen deformed at room temperature. Dislocations were dissociated into stacking faults (SFs) bounded by Shockley partial dislocations both before and after deformation; the DSA observed in this alloy would originate from the interactions between nitrogen atoms and the partial dislocations/SFs.

本文言語English
ホスト出版物のタイトルMaterials Integration
出版社Trans Tech Publications Ltd
ページ141-145
ページ数5
ISBN(印刷版)9783037853764
DOI
出版ステータスPublished - 2012
イベントInt. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011 - Sendai, Japan
継続期間: 2011 12 12011 12 2

出版物シリーズ

名前Key Engineering Materials
508
ISSN(印刷版)1013-9826
ISSN(電子版)1662-9795

Other

OtherInt. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011
国/地域Japan
CitySendai
Period11/12/111/12/2

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

フィンガープリント

「Dynamic strain aging in biomedical Co-Cr-Mo-based alloys with nitrogen doping」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