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stepan [7]
3 years ago
10

The mass fraction of eutectoid cementite in a hypoeutectoid iron-carbon alloy (just below its eutectoid temperature) is 0.109. O

n the basis of this information, determine the composition of the alloy. If it is not possible to determine the composition from the information provided, enter 0.
Engineering
1 answer:
Zinaida [17]3 years ago
3 0

Answer:

The composition of an alloy is 0.75%wt

Explanation:

Let alloy is a hypoeutectoid alloy.

So, we can apply lever rule which is shown below.

W_{a}=\frac{C_{0} -C_{a} }{C_{b}-C_{a}  }

We know that C_{a}=0.022 and C_{b}=6.7

Given that W_{a}=0.109, we have to find C_{0}

Thus,

0.109=\frac{C_{0}-0.022 }{6.7-0.022}

Hence

C_{0}=0.75%wt

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