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The tendency of a ductile material to act as brittle is known as __________

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The tendency of a ductile material to act as brittle is known as __________

(a) Compaction

(b) Brazing

(c) Tempering

(d) Notch sensitivity

This question was addressed to me during an interview for a job.

My enquiry is from Impact Tests on Metals, Fatigue Tests in chapter Wear of Metals, Mechanical Properties and Testing of Engineering Material & Metallurgy

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The correct answer is (d) Notch sensitivity

To explain: Some ductile materials are likely to behave as a brittle material in the presence of notches. This behavior is termed as notch sensitivity of the material.

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