ChemInform Abstract: Cyclic Metalated Nitriles: Stereoselective Cyclizations to cis‐ and trans‐Hydrindans, Decalins, and Bicyclo[4.3.0]undecanes

Fleming, Fraser F.; Gudipati, Subramanyham

doi:10.1002/chin.200909232

ChemInform

2009

DOI: 10.1002/chin.200909232

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ChemInform Abstract: Cyclic Metalated Nitriles: Stereoselective Cyclizations to cis‐ and trans‐Hydrindans, Decalins, and Bicyclo[4.3.0]undecanes

Fraser F. Fleming

Subramanyham Gudipati

Abstract: ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

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Thixoforming of non-dendritic AA6061 feedstock produced by low superheat casting with and without a cooling slope

Birol

2007

International Journal of Materials Research

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Low superheat casting with and without a cooling slope was employed to produce AA6061 thixoforming feedstock. The dendritic features were more frequent in the latter, suggesting that the degeneration of the dendritic structure was promoted by the cooling slope casting process. Minor differences in the primary phase morphology in the as-cast state were no longer evident after partial melting, with nearly equiaxed polygonal grains in all ingots cast with and without a cooling slope. 5 min soaking at 640 °C was identified as the best reheating practice as it provided the smallest grains and the most complete grain boundary wetting. The slugs machined from AA6061 ingots cast from a pouring temperature of 680 °C with and without a cooling slope were both successfully thixoformed into sound parts with no signs of porosity and segregation. The T6 heat treatment produced hardness values as high as 107 HB which compare very favourably with those of the extruded products and are even better than that obtained in the thermomechanically processed feedstock.

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Thixoforming of non-dendritic AA6061 feedstock produced by low superheat casting with and without a cooling slope

Birol

2007

International Journal of Materials Research

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Effect of solution heat treatment on the age hardening capacity of dendritic and globular AlSi7Mg0.6 alloys

Birol

2010

International Journal of Materials Research

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The effect of solution heat treatment on the age hardening capacity of dendritic and globular AlSi7Mg0.6 alloys was investigated in the present work to find out if solution treatment times are in fact shorter for rheocast parts. The morphology of the α-Al matrix, whether dendritic or globular, has no effect on the response of the alloy to T6 treatment. A solution treatment at 540 °C for 2 h suffices to fully solutionize the Mg and Si and the age hardening capacity of the AlSi7Mg0.6 alloy is impaired when it is 1 h or shorter. This is true for both dendritic and globular alloys. The expected favourable impact of the globular structure on the solution treatment times is believed to be offset by the relatively coarser structure in the globular alloy with respect to its dendritic counterpart.

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ChemInform Abstract: Cyclic Metalated Nitriles: Stereoselective Cyclizations to cis‐ and trans‐Hydrindans, Decalins, and Bicyclo[4.3.0]undecanes

Cited by 2 publications

References 1 publication

Thixoforming of non-dendritic AA6061 feedstock produced by low superheat casting with and without a cooling slope

Thixoforming of non-dendritic AA6061 feedstock produced by low superheat casting with and without a cooling slope

Effect of solution heat treatment on the age hardening capacity of dendritic and globular AlSi7Mg0.6 alloys

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