Given the stressstain curves A B C and D the microstructural

Given the stress-stain curves, A, B, C and D, the microstructural schematics W, X, Y and Z, and the word bank, answer the following questions. Which curve. A, B, C, or D represents Quenched and Tempered 4140 Steel? What is the UTS? Which microstructure, W, X, Y, or Z represents the structure of Quenched and Tempered 4140 Steel? Using word(s) from the word bank, briefly describe the microstructure. Which curve. A, B, C, or D represents Fully Annealed 4140 Steel? What is the UTS? Which microstructure, W, X, Y, or Z represents the structure of Fully Annealed 4140 Steel? Using word(s) from the word bank, briefly describe the microstructure.

Solution

a-D quenched A tempered W quenched Y tempered

b-B is annealling Z structure