We have discussed the effect of multiple methods to increase the yield strength of metals, like for instance in copper:

Which statement is WRONG among the following?

Question

We have discussed the effect of multiple  methods to increase the yield strength of metals, like for instance in  copper: 
  
 Which statement is  WRONG  among the following?

Answer

Copper alloys  are generally better than  pure copper  for applications that require significant plastic deformation.

Answer

Hardening  is a way to increase a material's ability to resist deformation.

Answer

Strengthening  usually comes at the expense of  ductility .

Answer

Hardening  generally means "introducing defects" in the material, making it stronger.

Answer

Solution hardening  of copper with zinc to form brass is the best way to increase its yield strength, while keeping good elongation ability.

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We have discussed the effect of multiple methods to increase the yield strength...

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