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← TechnologyWhich microstructural outcome occurs when forging metals lacking preheating?
A)Increased grain boundary carbide precipitation
B)Decreased dislocation climb vacancy formation
C)Dendritic segregation solidification micro fissures✓
D)Improved gamma prime phase coherency
💡 Explanation
Quenching during cold forging causes dendritic segregation microscopic fissures because the high cooling rates after deformation prevents atoms from diffusing and homogenizing the alloy, therefore dendritic segregation instead of uniform distribution occurs, rather than the effects seen with higher temperatures.
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