Tensile and fatigue behaviour of as-forged AZ31B extrusion
Tensile and stress controlled fatigue tests were performed to investigate the influence of forging at a temperature of 400°C at different rates, on the performance of extruded AZ31B magnesium alloy. The obtained microstructural analysis showed that the extruded AZ31B magnesium alloy possesses a bimo...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2016-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://212.237.37.202/index.php/fis/article/view/1796 |
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| author | A. Gryguc S.K. Shaha H. Jahed M. Wells B. Williams J. McKinley |
| author_facet | A. Gryguc S.K. Shaha H. Jahed M. Wells B. Williams J. McKinley |
| author_sort | A. Gryguc |
| collection | DOAJ |
| description | Tensile and stress controlled fatigue tests were performed to investigate the influence of forging at a temperature of 400°C at different rates, on the performance of extruded AZ31B magnesium alloy. The obtained microstructural analysis showed that the extruded AZ31B magnesium alloy possesses a bimodal grain structure with strong basal texture. In contrast, the forged samples showed refined grains and a weaker texture. During tensile testing, a maximum yield and ultimate tensile strength of about 163 MPa and 268 MPa were obtained for the forged samples showing an increase of 102% and 7%, respectively from the as-extruded material. At the same time, a significant improvement of fatigue life was also observed for the sample forged at the rate of 100 mm/min. The fractographic analysis of the fracture surfaces showed that ductile type fractures occurred in both as-extruded and forged samples. However, more dimples and plastic deformation were identified in the fracture surfaces of the forged specimens. It is believed that forging improved the fatigue life by a combination of grain refinement and texture modification resulting in improved yield and ductility. KEYWORDS. AZ31B; Forging; Fatigue Characterization; Fracture; Texture. |
| format | Article |
| id | doaj-art-9e32a8c0790744b1803904bd455d95e4 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2016-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-9e32a8c0790744b1803904bd455d95e42025-01-03T00:39:49ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932016-10-011038Tensile and fatigue behaviour of as-forged AZ31B extrusionA. GrygucS.K. ShahaH. JahedM. WellsB. WilliamsJ. McKinleyTensile and stress controlled fatigue tests were performed to investigate the influence of forging at a temperature of 400°C at different rates, on the performance of extruded AZ31B magnesium alloy. The obtained microstructural analysis showed that the extruded AZ31B magnesium alloy possesses a bimodal grain structure with strong basal texture. In contrast, the forged samples showed refined grains and a weaker texture. During tensile testing, a maximum yield and ultimate tensile strength of about 163 MPa and 268 MPa were obtained for the forged samples showing an increase of 102% and 7%, respectively from the as-extruded material. At the same time, a significant improvement of fatigue life was also observed for the sample forged at the rate of 100 mm/min. The fractographic analysis of the fracture surfaces showed that ductile type fractures occurred in both as-extruded and forged samples. However, more dimples and plastic deformation were identified in the fracture surfaces of the forged specimens. It is believed that forging improved the fatigue life by a combination of grain refinement and texture modification resulting in improved yield and ductility. KEYWORDS. AZ31B; Forging; Fatigue Characterization; Fracture; Texture.https://212.237.37.202/index.php/fis/article/view/1796AZ31BForgingFatigue CharacterizationFractureTexture |
| spellingShingle | A. Gryguc S.K. Shaha H. Jahed M. Wells B. Williams J. McKinley Tensile and fatigue behaviour of as-forged AZ31B extrusion Fracture and Structural Integrity AZ31B Forging Fatigue Characterization Fracture Texture |
| title | Tensile and fatigue behaviour of as-forged AZ31B extrusion |
| title_full | Tensile and fatigue behaviour of as-forged AZ31B extrusion |
| title_fullStr | Tensile and fatigue behaviour of as-forged AZ31B extrusion |
| title_full_unstemmed | Tensile and fatigue behaviour of as-forged AZ31B extrusion |
| title_short | Tensile and fatigue behaviour of as-forged AZ31B extrusion |
| title_sort | tensile and fatigue behaviour of as forged az31b extrusion |
| topic | AZ31B Forging Fatigue Characterization Fracture Texture |
| url | https://212.237.37.202/index.php/fis/article/view/1796 |
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