FATIGUE FRACTURE TOUGHNESS AND FATIGUE CRACK PROPAGATION IN 5. 5% Ni STEEL AT LOW TEMPERATURE.

T. Kawasaki, T. Yokobori, Y. Sawaki, S. Nakanishi, H. Izumi

Research output: Contribution to conferencePaperpeer-review

5 Citations (Scopus)

Abstract

For design against fatigue, the importance of the fatigue fracture toughness K//f//c has been proposed and a recent experimental investigation revealed that the fatigue fracture toughness for high strength tempered martenisitic steel was only about half of that of usual fracture toughness. This means that K//f//c, not K//l//c, should be taken into consideration against fatigue design since the critical flaw size in fatigue condition predicted from K//f//c would be one quarter comparing with that in static condition. A very sharp toughness transition of K//f//c is observed at about 123 K ( minus 150 degree C) for this steel, namely K//f//c is drastically reduced within a fairly sharp temperature interval and decreases further with decreasing temperature below FTT. The object of the present investigation is to study much more thoroughly the fatigue crack propagation in 5. 5% Ni steel with special interest for its difference between above and below the FTT.

Original languageEnglish
Pages857-864
Number of pages8
DOIs
Publication statusPublished - 1978
Externally publishedYes
EventFract 1977 $—$ adv in res on the strength and fract of mater, Int Conf on Fract, 4th - Waterloo, Ont, USA
Duration: 1977 Jun 191977 Jun 24

Other

OtherFract 1977 $—$ adv in res on the strength and fract of mater, Int Conf on Fract, 4th
CityWaterloo, Ont, USA
Period77/6/1977/6/24

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint

Dive into the research topics of 'FATIGUE FRACTURE TOUGHNESS AND FATIGUE CRACK PROPAGATION IN 5. 5% Ni STEEL AT LOW TEMPERATURE.'. Together they form a unique fingerprint.

Cite this