Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy
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...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2016-01-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero35/numero_35_art_10.pdf |
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| _version_ | 1841564261863653376 |
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| author | S. Morita S. Fujiwara T. Hori N. Hattori H. Somekawa T. Mayama |
| author_facet | S. Morita S. Fujiwara T. Hori N. Hattori H. Somekawa T. Mayama |
| author_sort | S. Morita |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-a52baca38bd847528e8621f70795a2e9 |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-a52baca38bd847528e8621f70795a2e92025-01-02T23:01:31ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932016-01-011035828710.3221/IGF-ESIS.35.10Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloyS. Morita0S. Fujiwara1T. Hori2N. Hattori3H. Somekawa4T. Mayama5Saga University,JapanSaga University,JapanSaga University,JapanSaga University,JapanNational Institute of Materials Science,JapanKumamoto University,JapanThis 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.http://www.gruppofrattura.it/pdf/rivista/numero35/numero_35_art_10.pdfFatigue crackTextureMagnesium |
| spellingShingle | S. Morita S. Fujiwara T. Hori N. Hattori H. Somekawa T. Mayama Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy Fracture and Structural Integrity Fatigue crack Texture Magnesium |
| title | Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy |
| title_full | Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy |
| title_fullStr | Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy |
| title_full_unstemmed | Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy |
| title_short | Microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy |
| title_sort | microstructure dependence of fatigue crack propagation behavior in wrought magnesium alloy |
| topic | Fatigue crack Texture Magnesium |
| url | http://www.gruppofrattura.it/pdf/rivista/numero35/numero_35_art_10.pdf |
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