Effect of static pre-strain on low cycle fatigue life of AISI 316L stainless steel

Tomohiro Ido, Jun Komotori

研究成果: Conference contribution

抄録

In order to clarify the effects of a great amount of static pre-strain (1/4 cycle) on fatigue life of AISI 316L stainless steel, strain controlled low cycle fatigue tests were carried out. Hardness and fracture ductility of specimens were measured. Results showed that in the case of a specimen with Δεp=0.01, static pre-strain of 0.16 noticeably reduced a fatigue life. To clarify the reasons for the decrease in fatigue life with pre-strain, the maximum stress amplitude of the hysteresis loop was measured. In the case of the specimen with Δεp=0.01, work softening was observed in the early stage of fatigue life. On the other hand, when the cyclic plastic strain ranges were Δεp=0.10, no softening was observed. These results suggest that work softening is significant in determining the fatigue life of the specimens at a relatively low level of applied cyclic strain.

本文言語English
ホスト出版物のタイトルFracture and Strength of Solids VII
出版社Trans Tech Publications Ltd
ページ65-69
ページ数5
ISBN(印刷版)9780878492107
DOI
出版ステータスPublished - 2011

出版物シリーズ

名前Key Engineering Materials
462-463
ISSN(印刷版)1013-9826
ISSN(電子版)1662-9795

ASJC Scopus subject areas

  • 材料科学一般
  • 材料力学
  • 機械工学

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