GATE ME 2014 Set 3 — Question 35

MCQ+1 / -0.33MediumCasting Defects & YieldCastingManufacturing Processes

Manufacturing Processes → Casting → Casting Defects & Yield

Last updated 5 September 2026

Question

The hot tearing in a metal casting is due to

Correct answer (C) wide range of solidification temperature Solution Hot tearing is a defect that occurs in the mushy zone (semi-solid state) during solidification. It is caused by tensile stresses that the solidifying metal cannot withstand. Alloys with a wide solidification temperature range are more prone to this because they spend more time in the mushy zone, where the liquid film between grains can be easily pulled apart by contraction stresses. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (C) wide range of solidification temperature Solution Hot tearing is a defect that occurs in the mushy zone (semi-solid state) during solidification. It is caused by tensile stresses that the solidifying metal cannot withstand. Alloys with a wide solidification temperature range are more prone to this because they spend more time in the mushy zone, where the liquid film between grains can be easily pulled apart by contraction stresses.

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