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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 411 to 420 of 787 (0.023 seconds)| 411 |
The effect of microalloying additions on pearlitic steelWilliams, P. R. January 1980 (has links)
No description available.
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| 412 |
Erosive wear of aluminaFranco Jr, Adolpho January 1996 (has links)
No description available.
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| 413 |
The formation of Alâ†2Oâ†3/Al composites by directed oxidation of AlXiao, Ping January 1992 (has links)
No description available.
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| 414 |
Structure-property relations in aluminium-lithium alloysBischler, P. J. E. January 1986 (has links)
This research is concerned with the Al-Li-Cu-Mg alloy 8090. The development of aircraft structural materials, and in particular aluminium alloys, has been reviewed. The development of Al-Li alloys has also been reviewed and the effects of alloy additions and heat treatment on mechanical properties have been discussed. The microstructure of a plate, 25 mm in thickness, has been fully characterised in the solution treated, under-, peak- and over-aged condition after ageing at 190oC. Coarsening of the two major precipitation hardening phases, ' and S-phase, has been related to mechanical properties and fracture behaviour. A post solution-treatment stretch has been found to bring about a finer, more uniform distribution of S-phase which results in a more homogeneous slip distribution and improved mechanical properties. Room temperature ageing was found to occur due to the growth of ' precipitates. The dislocation networks introduced during the stretching operation swept away a proportion of quenched in vacancies, resulting in a more sluggish ageing response. A short room temperature pre-age caused the formation of a grain boundary PFZ and retarded S-phase growth in unstretched material. Elevated temperature soak and recovery tests were carried out on peak-aged tensile specimens. Strength decreased in both series of tests above 150oC, due to a progressive dissolution of ', which was accompanied by an increased ductility in tests at soak temperature. Unstretched material showed a lower amount of dynamic recovery and a reduction in work hardening rate at a higher temperature in comparison with material in the stretched condition. These effects are accounted for by the difference in the effective S-phase size. High cycle fatigue behaviour over the temperature range 288 K to 425 K has also been studied and again the unstretched material maintains its E.R. to a higher test temperature. (D75129/87)
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| 415 |
Effects of alloy additions on properties of pearlitic steelsMottishaw, T. D. January 1984 (has links)
No description available.
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| 416 |
Solidification of 6xxx series Al alloysHsu, C. January 1999 (has links)
No description available.
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| 417 |
Coercivity mechanisms in some ferromagnetic materialsHetherington, M. G. January 1985 (has links)
No description available.
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| 418 |
Spray forming and microstructure of nickel superalloys IN718 and RS5Hedges, M. K. January 2003 (has links)
No description available.
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| 419 |
Some effects of alloying elements on #gamma#-TiAl base intermetallicsKim, Sanghoon January 1999 (has links)
No description available.
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| 420 |
Atom probe studies of phase transformations in maraging steelsSha, W. January 1991 (has links)
No description available.
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