2024-03-29T01:38:49Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00012312
2022-12-14T04:05:54Z
1221:1222
Notch-Fatigue Properties of Advanced TRIP-Aided Bainitic Ferrite Steels
Yoshikawa, Nobuo
Kobayashi, Junya
Sugimoto, Koh-ichi
The final publication is available at www.springerlink.com
To develop a transformation-induced plasticity (TRIP)-aided bainitic ferrite steel (TBF steel) with high hardenability for a common rail of the next generation diesel engine, 0.2 pct C-1.5 pct Si-1.5 pct Mn-0.05 pct Nb TBF steels with different contents of Cr, Mo, and Ni were produced. The notch-fatigue strength of the TBF steels was investigated and was related to the microstructural and retained austenite characteristics. If Cr, Mo, and/or Ni were added to the base steel, then the steels achieved extremely higher notch-fatigue limits and lower notch sensitivity than base TBF steel and the conventional structural steels. This was mainly associated with (1) carbide-free and fine bainitic ferrite lath structure matrix without proeutectoid ferrite, (2) a large amount of fine metastable retained austenite, and (3) blocky martensite phase including retained austenite, which may suppress a fatigue crack initiation and propagation.
Article
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE. 43A(11):4129-4136 (2012)
SPRINGER
2012-11
eng
journal article
AM
http://hdl.handle.net/10091/18109
https://soar-ir.repo.nii.ac.jp/records/12312
https://doi.org/10.1007/s11661-012-1246-x
10.1007/s11661-012-1246-x
1073-5623
AA10987657
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
43A
11
4129
4136
https://soar-ir.repo.nii.ac.jp/record/12312/files/Notch-Fatigue_Properties_of_Advanced.pdf
application/pdf
547.1 kB
2015-09-28