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Which of the following is/are the metallurgical factors that affect stress-corrosion cracking?

Which of the following is/are the metallurgical factors that affect stress-corrosion cracking? Correct Answer Chemical composition, distribution of precipitates and dislocation interactions

Metallurgical factors that affect stress-corrosion cracking are: i. Average chemical composition ii. Preferential orientation of grains iii. Distribution of precipitates iv. Dislocation interactions v. Degree of metastability.

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S1: The exact cause of migraine is still not known.
P: Several factors like digestive disorders and psychological disturbances, have been said to be causative factors.
Q: Certain foods like cheese, chocolate or red wine have also been found to trigger off an attack.
R: The causative factors are numerous : psychologically, anxiety and frustration play an important part.
S: It seems to be hereditary and a majority of sufferers are women.
S6: On the other hand physical overexertion, fatigue, irregularities in dietary habits, prolonged eye strain are common precipitating factors.

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1. Physical condition of work
2. Nature of machinery
3. Technical process
4. Quality of raw material
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6. Role of fellow workers
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