Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Miscellanea Vol. 10, No. 35 (2016)

Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy

Author and affiliation details
  • S. Morita Corresponding author morita@me.saga-u.ac.jp
  • S. Fujiwara
  • T. Hori
  • N. Hattori
  • H. Somekawa
  • T. Mayama
DOI
10.3221/IGF-ESIS.35.10
Pages
pages 82-87
Published
Published inVol. 10, No. 35 (2016)Go to the issue

Abstract

This paper deals with the fatigue crack propagation behavior of rolled AZ31B magnesium alloy (grain size: approximately 40 ?m). Fatigue crack propagation tests were performed on single edge notched tension specimens at a stress ratio of R = 0.1 and a frequency of 10 Hz at room temperature. Loading axes were parallel to the rolling direction; fatigue cracks propagated parallel to the transverse direction (L-T specimen), parallel to the short transverse direction (L-S specimen). Loading axis was perpendicular to the rolling direction; fatigue cracks propagated parallel to the transverse direction (S-T specimen). The crack growth rate (da/dN) of the L-S specimen was several times lower than that of the L-T specimen in the examined stress intensity factor range (?K). Fracture surfaces of the L-T and L-S specimens showed many steps parallel and perpendicular, respectively, to the macroscopic crack growth direction. The da/dN of the S-T specimen was higher than that of the L-T and L-S specimens in the examined ?K. The fracture surface was covered by quasi-cleavage facets independent of macroscopic crack growth direction, and the fracture surface roughness at low ?K was larger than that at high ?K.

Keywords

Article history

  1. ReceivedUntil the next stage: 0 days
  2. AcceptedUntil the next stage: 5 days
  3. Published

How to cite

APA

Morita, S., Fujiwara, S., Hori, T., Hattori, N., Somekawa, H., & Mayama, T. (2015). Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy. Fracture and Structural Integrity, 10(35), pages 82–87. https://doi.org/10.3221/IGF-ESIS.35.10

IEEE

S. Morita, S. Fujiwara, T. Hori, N. Hattori, H. Somekawa, and T. Mayama, “Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy,” Fracture and Structural Integrity, vol. 10, no. 35, pp. pages 82–87, 2015, doi: 10.3221/IGF-ESIS.35.10.

MLA

Morita, S., et al. “Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy.” Fracture and Structural Integrity, vol. 10, no. 35, 2015, pp. pages 82–87. https://doi.org/10.3221/IGF-ESIS.35.10.

Chicago

Morita, S., S. Fujiwara, T. Hori, N. Hattori, H. Somekawa, and T. Mayama. 2015. “Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy.” Fracture and Structural Integrity 10 (35): pages 82–87. https://doi.org/10.3221/IGF-ESIS.35.10.

Harvard

Morita, S., Fujiwara, S., Hori, T., Hattori, N., Somekawa, H. and Mayama, T. (2015) ‘Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy’, Fracture and Structural Integrity, 10(35), pp. pages 82–87. doi: 10.3221/IGF-ESIS.35.10.

Vancouver

Morita S, Fujiwara S, Hori T, Hattori N, Somekawa H, Mayama T. Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy. Fracture and Structural Integrity. 2015;10(35):pages 82-87. doi:10.3221/IGF-ESIS.35.10

BibTeX

@article{morita2015, author = {Morita, S. and Fujiwara, S. and Hori, T. and Hattori, N. and Somekawa, H. and Mayama, T.}, title = {Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy}, journal = {Fracture and Structural Integrity}, year = {2015}, volume = {10}, number = {35}, pages = {pages 82--87}, doi = {10.3221/IGF-ESIS.35.10}, url = {https://doi.org/10.3221/IGF-ESIS.35.10}, issn = {1971-8993} }

RIS

TY - JOUR AU - Morita, S. AU - Fujiwara, S. AU - Hori, T. AU - Hattori, N. AU - Somekawa, H. AU - Mayama, T. TI - Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2015 DA - 2015/12/29 VL - 10 IS - 35 SP - pages 82 EP - 87 DO - 10.3221/IGF-ESIS.35.10 UR - https://doi.org/10.3221/IGF-ESIS.35.10 SN - 1971-8993 ER -

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