Effects of microstructure on optimum heat treatment conditions in metal-matrix composites
Heat treatment conditions appear to differ in metal-matrix composites than in the matrix alloys alone. The time necessary for solutionising appeared to be much shorter in the composite primarily due to a very small grain size. The precipitates were completely dissolved in less than 1.5 min at 500 C....
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| Veröffentlicht in: | Journal of materials science 1991-06, Vol.26 (12), p.3287-3291 |
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| container_title | Journal of materials science |
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| creator | SCHUELLER, R. D WAWNER, F. E |
| description | Heat treatment conditions appear to differ in metal-matrix composites than in the matrix alloys alone. The time necessary for solutionising appeared to be much shorter in the composite primarily due to a very small grain size. The precipitates were completely dissolved in less than 1.5 min at 500 C. The normally applied T6 solutionising time of 1 h is not, therefore, necessary. Artificial ageing was not very effective in the AA2124 15 vol % SiCw composite since the precipitates nucleated and grew on the whisker interfaces. Only natural ageing was necessary to get peak tensile and yeild strength values, although a slight decrease in ductility was noticed. The rate of room temperature ageing was nearly identical in both the composite and the unreinforced alloy. 24 refs. |
| doi_str_mv | 10.1007/BF01124675 |
| format | Article |
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| subjects | Applied sciences Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Metals. Metallurgy Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Physics |
| title | Effects of microstructure on optimum heat treatment conditions in metal-matrix composites |
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