Virtual Labs

Tools

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Strain Ageing and Yield Point Phenomenon in Mild Steel

Choose difficulty:

Beginner

Intermediate

Advanced

1. Which of the following elements primarily cause strain aging in steels?

a: Carbon Explanation

Explanation

b: Chromium Explanation

Explanation

c: Zinc Explanation

Explanation

d: Nickel Explanation

Explanation

2. Which of the following statements are correct w.r.t. strain aging?

a: Strain aging process involves precipitation of carbides Explanation

Explanation

b: Unloading the sample after completion of yield point phenomenon and quickly reloading it would show strain aging Explanation

Explanation

c: The yield point after aging is higher than the initial yield pointanswer3 Explanation

Explanation

d: Strain aging phenomenon is due to change in crystal structure Explanation

Explanation

3. Strain aging is more popular in:

a: Mild steel Explanation

Explanation

b: 304 stainless steels Explanation

Explanation

c: Aluminum alloys Explanation

Explanation

d: Magnesium alloys Explanation

Explanation

4. Which one of the following is incorrect?

a: Reappearance of yield point phenomenon is due to diffusion of interstitial atoms to core of dislocations. Explanation

Explanation

b: Reducing carbon content can avoid yield point phenomenon Explanation

Explanation

c: The upper yield point is nucleation stress of the Lüders bands. Explanation

Explanation

d: The strain aging effect does not depend upon the type of solute atoms Explanation

Explanation

5. Lower yield point is not related to:

a: Inhomogeneous deformation Explanation

Explanation

b: Initiation of Lüder bands Explanation

Explanation

c: Growth of Lüder bands Explanation

Explanation

d: Plastic deformation Explanation

Explanation

Community Links Sakshat Portal Outreach Portal FAQ: Virtual Labs

AGPL 3.0 & Creative Commons (CC BY-NC-SA 4.0)