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← ScienceWhich outcome results when dislocations impede slip in aluminum crystal?
A)Increased material tensile yield strength✓
B)Enhanced electron tunneling probability
C)Localized phonon transmission enhancement
D)Reduced material thermal conductivity
💡 Explanation
Increased yield strength occurs because dislocation entanglement causes work hardening, strengthening the material. The mechanism is dislocation pile-up; therefore yield strength increases rather than electron tunneling, which requires quantum mechanics effects; it also doesn't affect phonon transmission or thermal conductivity.
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