Metallurgical Engineering > GATE 2020 > Creep
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]
Assertion [a]: Low-alloy steels used for medium-temperature creep resistance often have additions of strong carbide-forming elements.
Reason [r]: During creep deformation, the particles with higher misfit with the matrix, lose coherency.
A
Both [a] and [r] are true and [r] is the correct reason for [a].
B
Both [a] and [r] are true but [r] is not the correct reason for [a].
C
Both [a] and [r] are false.
D
[a] is true but [r] is false.

Correct : b

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metallurgical engineering gate creep resistance steels low alloy steels medium temperature creep carbide forming elements creep deformation metallurgy gate GATE metallurgical engineering 2020 creep misfit coherence metallurgy engineering questions

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