Metallurgical Engineering > GATE 2025 > Grain Size Effects
Two randomly oriented polycrystalline copper samples with average grain sizes of 10 μm (Sample A) and 100 μm (Sample B) were tested at room temperature.
Given:
EA= Young's modulus of Sample A
EB= Young's modulus of Sample B
YSA= Yield strength of Sample A
YSB= Yield strength of Sample B
Which one of the following statements is CORRECT?
A
EA>EB and YSA>YSB
B
EA=EB and YSAB
C
EA>EB and YSA=YSB
D
EA=EB and YSA>YSB

Correct : d

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