33 research outputs found
Some crystallographic observations of growth-twinned dendrites in aluminium
No full textGrowth-twinned dendrites in semi-continuously cast aluminium billets were studied with the object of elucidating some of their crystallographic details. It is shown that there is no unique growth direction for twinned dendrites in aluminium and that under the conditions of D.C. semi-continuous casting, twinned dendrites can occur in competition with columnar dendrites when the twin plane deviates by as much as 30° from the normal to the solid-liquid interface. The growth advantage experienced by twins in competition with normal columnar dendrites is explained in terms of a growth mechanism which depends upon twin boundary energy, solute content, freezing rate and temperature gradient
Stability of microstructures in chill-cast aluminum alloys containing twinned columnar growth structures
No full textClinical features of superficial fungal infections caused by Hendersonula toruloidea and Scytalidium hyalinum
No full textThe classification of inherited epidermolysis bullosa (EB):Report of the Third International Consensus Meeting on Diagnosis and Classification of EB
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Genetic and biochemical analysis of mutants induced by bacteriophage Mu DNA integration into Klebsiella pneumoniae nitrogen fixation genes
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