冷間強圧延によりヘテロナノ組織を付与した二相ステンレス鋼の疲労破壊

Fatigue behaviors of duplex stainless steels with excellent tensile properties brought by heterogeneous nanostructure were examined with changing volume fraction of ferritic-austenitic phases. In as-rolled samples, fatigue strength taken by 107 cycles became double comparing with those of convention...

Full description

Saved in:
Bibliographic Details
Published in鉄と鋼 Vol. 105; no. 2; pp. 272 - 281
Main Authors 青柳, 吉輝, 戸髙, 義一, 小林, 正和, 三浦, 博己, 山崎, 恭和, 渡邊, 千尋
Format Journal Article
LanguageJapanese
Published 一般社団法人 日本鉄鋼協会 2019
Subjects
duplex stainless steels
fatigue
fracture
heavy cold rolling
heterogeneous nanostructure
high strength
Online AccessGet full text
ISSN0021-1575
1883-2954
DOI10.2355/tetsutohagane.TETSU-2018-080

Cover

More Information
Summary:Fatigue behaviors of duplex stainless steels with excellent tensile properties brought by heterogeneous nanostructure were examined with changing volume fraction of ferritic-austenitic phases. In as-rolled samples, fatigue strength taken by 107 cycles became double comparing with those of conventional stainless steels. The volume fraction of ferritic-austenitic phases has not affected fatigue behavior. Further, the fatigue strength was improved additionally 200 MPa by aging heat-treatment after cold rolling. The duplex stainless steels with heterogeneous nanostructure possessed enough fatigue strength even in 3%NaCl solution though its fatigue strength declined.
ISSN:0021-1575
1883-2954
DOI:10.2355/tetsutohagane.TETSU-2018-080