A Study of Strain and Strain-Rate Dependent Properties of a Superplastic Zn-Al Alloy Under Biaxial StressesSource: Journal of Engineering Materials and Technology:;1982:;volume( 104 ):;issue: 001::page 41DOI: 10.1115/1.3225034Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A superplastic Zn-Al alloy in sheet form is formed into a bulge over a circular hole by pneumatic pressure. The geometry, the stress, the strain, and the strain-rate are determined at various points covering the whole specimen and at various stages of the forming process. The complicated shape, and its complicated changes, are represented by introducing an index for the local geometry, called “prolateness,” which is also related to the local stress ratio in a simple way. The biaxial stress is analyzed into a strain-proportional and a strain-rate-proportional component, which represent, respectively, the quasi-solid and the quasi-liquid behavior of the superplastic material.
keyword(s): Alloys , Superplasticity , Stress , Geometry , Shapes AND Pressure ,
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| contributor author | T. C. Hsu | |
| contributor author | I. M. Bidhendi | |
| date accessioned | 2017-05-08T23:13:29Z | |
| date available | 2017-05-08T23:13:29Z | |
| date copyright | January, 1982 | |
| date issued | 1982 | |
| identifier issn | 0094-4289 | |
| identifier other | JEMTA8-26885#41_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/95911 | |
| description abstract | A superplastic Zn-Al alloy in sheet form is formed into a bulge over a circular hole by pneumatic pressure. The geometry, the stress, the strain, and the strain-rate are determined at various points covering the whole specimen and at various stages of the forming process. The complicated shape, and its complicated changes, are represented by introducing an index for the local geometry, called “prolateness,” which is also related to the local stress ratio in a simple way. The biaxial stress is analyzed into a strain-proportional and a strain-rate-proportional component, which represent, respectively, the quasi-solid and the quasi-liquid behavior of the superplastic material. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | A Study of Strain and Strain-Rate Dependent Properties of a Superplastic Zn-Al Alloy Under Biaxial Stresses | |
| type | Journal Paper | |
| journal volume | 104 | |
| journal issue | 1 | |
| journal title | Journal of Engineering Materials and Technology | |
| identifier doi | 10.1115/1.3225034 | |
| journal fristpage | 41 | |
| journal lastpage | 46 | |
| identifier eissn | 1528-8889 | |
| keywords | Alloys | |
| keywords | Superplasticity | |
| keywords | Stress | |
| keywords | Geometry | |
| keywords | Shapes AND Pressure | |
| tree | Journal of Engineering Materials and Technology:;1982:;volume( 104 ):;issue: 001 | |
| contenttype | Fulltext |