Ni has a density of 8.90 g/cm3 and Ti has a density of 4.5 g/cm3 . A binary NiTi alloy is 25 wt.% Ti. What is the composition of this alloy in vol.%. (10 points)

Answer : The composition of Ti and Ni alloy in vol.% is, 39.7 % and 60.3 % respectively.

Explanation :

As we are given that a binary NiTi alloy is 25 wt.% Ti. That means, 25 grams of Ti and 75 grams of Ni present in NiTi alloy.

Now we have to determine the volume of Ni and Ti.

and,

Now we have to calculate the composition of this alloy in vol.%.

and,

Thus, the composition of Ti and Ni alloy in vol.% is, 39.7 % and 60.3 % respectively.