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← TechnologyWhich outcome commonly occurs when exceeding allowance tolerances during investment casting?
A)Increased surface porosity develops rapidly✓
B)Cracking during eutectic solidification increases
C)Solidification shrinkage becomes directionally aligned
D)Crystallographic slip plane formation diminishes
💡 Explanation
Increased surface porosity develops rapidly when exceeding tolerance of melt temperature, because *nucleation* is enhanced forming smaller grain structures near flask surfaces; therefore porosity appears rather than uniform material properties caused by correct melt parameters.
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