| contributor author | Preciado, M. | |
| contributor author | Bravo, P. M. | |
| contributor author | Cأ،rdenas, D. | |
| date accessioned | 2017-05-09T01:29:10Z | |
| date available | 2017-05-09T01:29:10Z | |
| date issued | 2016 | |
| identifier issn | 0094-4289 | |
| identifier other | tsea_008_03_031013.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/161273 | |
| description abstract | The fatigue properties of highpressure diecasting (HPDC) magnesium (Mg) alloys AZ91 exhibit a high variability, due primarily to the porosity that is inherent in the injection process. In the 94% of the studied samples, the porosity in which crack nucleation originates is at the surface or adjacent to the surface. The threshold stress intensity factor amplitude and the limit of fatigue have been calculated following the classical models of parameterization of defects. A new set of samples were prepared by machining the surface slightly, in order to conserve the microstructure, and the fatigue behavior at low level of stress was improved. All the samples were produced in molds with the final shape by HPDC process, which allowed a realistic study of the surface effect and the influence of grain size variation from the edge to the center of the samples. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Influence of Porosity in the Fatigue Behavior of the High Pressure Die Casting AZ91 Magnesium Alloys | |
| type | Journal Paper | |
| journal volume | 138 | |
| journal issue | 4 | |
| journal title | Journal of Engineering Materials and Technology | |
| identifier doi | 10.1115/1.4033466 | |
| journal fristpage | 41006 | |
| journal lastpage | 41006 | |
| identifier eissn | 1528-8889 | |
| tree | Journal of Engineering Materials and Technology:;2016:;volume( 138 ):;issue: 004 | |
| contenttype | Fulltext | |