Chapter 12, Problem 12.122CP

Interpretation Introduction

Interpretation:

A computer program is to be written to calculate the amount of the phases that are in the plain carbon steel for which the composition is in the range of $0-1.5\%$ carbon.

Concept Introduction:

Amount of each phase in wt% is calculated using lever rule. At a particular temperature and alloy composition, a tie line is drawn on the phase diagram of the alloy between the solidus and liquidus curve. Then the portion of the lever opposite to the phase whose amount is to be calculated is considered in the formula used as:

  $\text{Phase wt\%}=\frac{\text{opposite arm of lever}}{\text{total length of the tie line}}\times 100$ ...... (1)