The
axiom "Microstructure dictates characteristics" is commonly believed,
yet it is tested and found inadequate in this study. While bifilms from the
casting process are often inconspicuous in the microstructure, they are
frequently just as essential, if not far more so, since they appear as a dense
population of fissures throughout the metal. The bifilm population controls the
morphology of several cast and wrought structural properties. For cast alloys,
bifilm control of pore morphology and Si morphology, as well as dendritic arm
spacing, is investigated (DAS). Grain refining appears to have largely bifilm
controlled advantages in terms of tensile characteristics. The composition of
bifilms appears to have a significant impact on ductility and fatigue. Pitting,
intergranular corrosion, hydrogen blistering, and cracking are examples of
intrusive corrosion processes. Bifilm control is proposed as a novel method for
improving and controlling metallurgical qualities.
Author(s) Details:
John Campbell,
Emeritus Professor of Casting Technology School of Metallurgy and
Materials, Engineering Faculty, University of Birmingham, UK.
Please see the link here: https://stm.bookpi.org/RACMS-V1/article/view/7077
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