Fracture and Structural Integrity e-ISSN 1971-8993 Open access
SI: Crack Paths Vol. 13, No. 48 (2019)

Evaluation of Fatigue Properties under Four-point Bending and Fatigue Crack Propagation in Austenitic Stainless Steel with a Bimodal Harmonic Structure

Author and affiliation details
DOI
10.3221/IGF-ESIS.48.52
Pages
545-553
Published
Published inVol. 13, No. 48 (2019)Go to the issue

Abstract

Austenitic stainless steel (JIS-SUS304L) with a bimodal harmonic structure, which is defined as a coarse-grained structure surrounded by a network of fine grains, was fabricated using powder metallurgy to improve both the strength and ductility. Four-point bending fatigue tests and K-decreasing tests were conducted in air at room temperature under a stress ratio R of 0.1 to investigate fatigue crack propagation in SUS304L. The fatigue limit of this harmonic-structured material was higher than that of the material with a homogeneous coarse-grained structure. This is attributable to the formation of fine grains by mechanical milling and to the suppression of pore formation. In contrast, the threshold stress intensity range, DKth, for the harmonic-structured material was lower than that for the homogeneous coarse-grained material, while the crack growth rates, da/dN, were higher at comparable DK. These results can be attributed to a reduction in the effective threshold stress intensity range, DKeff,th, due to the presence of fine grains in the harmonic structure.

Keywords

Article history

  1. ReceivedUntil the next stage: 35 days
  2. RevisedUntil the next stage: 5 days
  3. AcceptedUntil the next stage: 75 days
  4. Published

How to cite

APA

Kikuchi, S., Nakatsuka, Y., Nakai, Y., Nakatani, M., Kawabata, M. O., & Ameyama, K. (2019). Evaluation of Fatigue Properties under Four-point Bending and Fatigue Crack Propagation in Austenitic Stainless Steel with a Bimodal Harmonic Structure. Fracture and Structural Integrity, 13(48), 545–553. https://doi.org/10.3221/IGF-ESIS.48.52

IEEE

S. Kikuchi, Y. Nakatsuka, Y. Nakai, M. Nakatani, M. O. Kawabata, and K. Ameyama, “Evaluation of Fatigue Properties under Four-point Bending and Fatigue Crack Propagation in Austenitic Stainless Steel with a Bimodal Harmonic Structure,” Fracture and Structural Integrity, vol. 13, no. 48, pp. 545–553, 2019, doi: 10.3221/IGF-ESIS.48.52.

MLA

Kikuchi, Shoichi, et al. “Evaluation of Fatigue Properties under Four-point Bending and Fatigue Crack Propagation in Austenitic Stainless Steel with a Bimodal Harmonic Structure.” Fracture and Structural Integrity, vol. 13, no. 48, 2019, pp. 545–553. https://doi.org/10.3221/IGF-ESIS.48.52.

Chicago

Kikuchi, Shoichi, Yuta Nakatsuka, Yoshikazu Nakai, Masashi Nakatani, Mie Ota Kawabata, and Kei Ameyama. 2019. “Evaluation of Fatigue Properties under Four-point Bending and Fatigue Crack Propagation in Austenitic Stainless Steel with a Bimodal Harmonic Structure.” Fracture and Structural Integrity 13 (48): 545–553. https://doi.org/10.3221/IGF-ESIS.48.52.

Harvard

Kikuchi, S., Nakatsuka, Y., Nakai, Y., Nakatani, M., Kawabata, M.O. and Ameyama, K. (2019) ‘Evaluation of Fatigue Properties under Four-point Bending and Fatigue Crack Propagation in Austenitic Stainless Steel with a Bimodal Harmonic Structure’, Fracture and Structural Integrity, 13(48), pp. 545–553. doi: 10.3221/IGF-ESIS.48.52.

Vancouver

Kikuchi S, Nakatsuka Y, Nakai Y, Nakatani M, Kawabata MO, Ameyama K. Evaluation of Fatigue Properties under Four-point Bending and Fatigue Crack Propagation in Austenitic Stainless Steel with a Bimodal Harmonic Structure. Fracture and Structural Integrity. 2019;13(48):545-553. doi:10.3221/IGF-ESIS.48.52

BibTeX

@article{kikuchi2019, author = {Kikuchi, Shoichi and Nakatsuka, Yuta and Nakai, Yoshikazu and Nakatani, Masashi and Kawabata, Mie Ota and Ameyama, Kei}, title = {Evaluation of Fatigue Properties under Four-point Bending and Fatigue Crack Propagation in Austenitic Stainless Steel with a Bimodal Harmonic Structure}, journal = {Fracture and Structural Integrity}, year = {2019}, volume = {13}, number = {48}, pages = {545--553}, doi = {10.3221/IGF-ESIS.48.52}, url = {https://doi.org/10.3221/IGF-ESIS.48.52}, issn = {1971-8993} }

RIS

TY - JOUR AU - Kikuchi, Shoichi AU - Nakatsuka, Yuta AU - Nakai, Yoshikazu AU - Nakatani, Masashi AU - Kawabata, Mie Ota AU - Ameyama, Kei TI - Evaluation of Fatigue Properties under Four-point Bending and Fatigue Crack Propagation in Austenitic Stainless Steel with a Bimodal Harmonic Structure JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2019 DA - 2019/03/07 VL - 13 IS - 48 SP - 545 EP - 553 DO - 10.3221/IGF-ESIS.48.52 UR - https://doi.org/10.3221/IGF-ESIS.48.52 SN - 1971-8993 ER -

Licence

Copyright © 2019 Shoichi Kikuchi, Yuta Nakatsuka, Yoshikazu Nakai, Masashi Nakatani, Mie Ota Kawabata, Kei Ameyama.

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