Microstructure and mechanical properties of AA7039+20%SiC W composite
Hot deformation tests were performed on an AA7039-matrix composite reinforced with a 20% addition of SiC whiskers. The flow stress maximum was reduced with deformation temperature from 640 MPa to approximately 8 MPa at 293 K and 823 K, respectively. TEM observations, performed on as deformed samples...
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| Published in: | Journal of microscopy (Oxford) Vol. 237; no. 3; pp. 416 - 420 |
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| Main Authors: | , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
England
01-03-2010
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| Online Access: | Get full text |
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| Summary: | Hot deformation tests were performed on an AA7039-matrix composite reinforced with a 20% addition of SiC whiskers. The flow stress maximum was reduced with deformation temperature from 640 MPa to approximately 8 MPa at 293 K and 823 K, respectively. TEM observations, performed on as deformed samples, revealed a highly recovered substructure of the matrix and a striated structure of the whiskers. The fringes, which are perpendicular to the whiskers' longitudinal axis, were ascribed to nano-sized twins and stacking faults formed during the crystal growth rather than to some effects of the deformation process. |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 0022-2720 1365-2818 |
| DOI: | 10.1111/j.1365-2818.2009.03276.x |