Chapter 11.17, Problem 4DP

(a)

To determine

To describe:

For eutectoid steel, explain continuous cooling heat treatments required to obtain following combinations of Brinell hardness-ductility:

$\text{680}\text{HB}\text{and}\text{0\%RA}$

(b)

To determine

To describe:

$\text{260}\text{HB}\text{and}2\text{0\%RA}$

(c)

To determine

To describe:

$\text{200}\text{HB}\text{and}2\text{8\%RA}$

(d)

To determine

To describe:

$\text{160}\text{HB}\text{and}67\text{\%RA}$