Effects of Cooling Condition on Hot Tearing during Investment Casting

Saeid Norouzi; Hassan Farhangi

doi:10.4028/www.scientific.net/AMR.264-265.355

Paper Titles

Analysis of Temperature Distribution on Warm Forming of Aluminum-Magnesium Alloy
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Effects of Cooling Condition on Hot Tearing during Investment Casting
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Influence of Process Parameters on Welding Quality during Lap Welding of Aluminum Sheets Using High Brightness Disk Laser
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On-Line Empirical Models for Control of Bead Geometry in Robotic Arc Welding Process
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A Study on Magnetostrictive Sensor for Detecting the Weld Defects
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A Study on Cooling Characteristics of AC4C and AC7A Casting Material for Manufacturing Tire Mold
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 264-265Effects of Cooling Condition on Hot Tearing during...

Effects of Cooling Condition on Hot Tearing during Investment Casting

Abstract:

In the present study, the effect of cooling condition on hot tearing tendency and hot tearing fracture surface morphology were investigated. Results show that, the hot tear fracture surface characteristics are nearly similar under different cooling conditions. The hot tear surface exhibits two main features; the brittle region and the ductile region. The results also indicate that cooling condition has multifaceted effects on hot tearing phenomenon. Increasing cooling rate increases the thermal gradient, which raises the hot tearing tendency; concomitantly it decreases the grain size and dendrite arm spacing which increases the strength of the material. The occurrence of hot tearing phenomenon under different cooling conditions is discussed and evaluated based on the competition between these opposing factors during the solidification process.

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Periodical:

Advanced Materials Research (Volumes 264-265)

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355-360

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.264-265.355

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Online since:

June 2011

Authors:

Saeid Norouzi, Hassan Farhangi

Keywords:

Cooling Condition, Fracture Surface, Hot Tearing, Investment Casting, Superalloy

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