NDLI: A study of thermal parameters and interdendritic feeding in lost foam casting

Content Provider	Springer Nature Link
Author	Chen, Qiming Ravindran, C.
Copyright Year	2000
Abstract	Thermal parameter-based criterion functions are of great practical importance to predict dispersed microporosity in castings. Using an experimental approach, the present study is a pioneering application of the thermal parameter-based criterion functions to predict the microporosity formation in lost foam casting (LFC) of A356 alloy. A series of plate castings with controlled hydrogen content were made with various thermal conditions by varying the dimensions of feeders and in gate design. Extensive analysis of the thermal parameters shows that changing the gate and feeder design modifies the distribution of the thermal parameters; furthermore, it influences the distribution of microporosity along the central line of the plate castings. The thermal parameters and criterion functions based on Darcy’s law show consistency, thus supporting the interdendritic feeding mechanism of microporosity formation. The criterion functions such as Niyama, LCC, and KCL can be used to predict microporosity formation during solidification of LFC, depending on the hydrogen content in the casting. The limitation of the interdendritic feeding mechanism and the effect of hydrogen on the gas pore formation are also discussed.
Starting Page	386
Ending Page	395
Page Count	10
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	9
Issue Number	4
e-ISSN	15441024
Language	English
Publisher	Springer-Verlag
Publisher Date	2000-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	alloy A356 heat treating interdendritic feeding lost foam casting microporosity thermal parameters Characterization and Evaluation of Materials Materials Science Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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