Entrained defects in light metal cast alloys

Multiscale modeling for the prediction of casting defects in investment cast aluminum alloys

Macroscopic modeling of heat transfer and fluid flow is now routinely used for the prediction of macroscopic defects in castings, while microscopic models are used to investigate the effects of alloy changes on typical microstructures. By combining these two levels of modeling it is possible to simulate the casting process over a wider range of spatial and temporal scales. This paper presents a...

THERMAL FATIGUE RESISTANCES OF 356 AND 413 CAST Al ALLOYS

Abstract: Thermal fatigue is a stochastic process often showing considerable scatter even in controlled environments. Due to complexity of thermal fatigue, there is no a complete analytical solution for predicting the effect of this property on the life of various components, subjected to severe thermal fluctuations. Among these components, one can mention car cylinder, cylinder head and pi...

Intermetallic Phases Examination in Cast AlSi5Cu1Mg and AlCu4Ni2Mg2 Aluminium Alloys in As-Cast and T6 Condition

Deffects in Dental Alloys Cast Single Tooth Restorations

Casting failures of alloys in dental technology should be the exception, not the rule. They have to be detected in time and associated with possible causes. For the experimental part base metal alloys single tooth restorations were achieved using the conventional lost wax process for casting in order to be evaluated. Some casting defects obtained during the experimental part are exemplified: in...

Rod and cone disc shedding in light-entrained tree squirrels.

,5dult tree squirrels (Seiurus carolinensis) entra,ined to a daily lighting cycle of I2L: 12D, display a biphasic rhythm of disc shedding. One peak occurs l-2 hr after light, onset. The second peak occurs during the middle of the dark period, a,bout three-quarters of a cycle out of phase with the morning peak. R’od disc shedding predominates in the morning, and cone shedding predominates during...