Between 230 and 370°C, blue brittleness is caused in mild steel because of the_________________?
Correct answer: B. Strain-ageing
- A. Immobility of dislocation
- B. Strain-ageing
- C. Increase in Young's modulus
- D. Strain hardening
Explanation
Blue brittleness in mild steel occurs in the intermediate-temperature range because of strain ageing, in which carbon and nitrogen atoms interact with dislocations and restrict their movement. This reduces ductility and increases brittleness.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
A polymer is termed as an 'elastomer', if its percentage elongation is more than 100%. An elastomer is termed as 'rubber' if its percentage elongation is more than _______________ percent ?
Which of the following is an ore dressing operation ?
Shampoos are commercially not available in the form of ___________________?
Principal alloying element in Elinvar (used for making hair springs for watches) is__________________?
Neutrons are present in all atoms except that of ___________________?
An atom bomb works on the principle of __________________?