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Example of intergranular corrosion
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Engineering Metallurgy
Q. Knife Line Attack is a type of _______
- Published on 11 Sep 15
a.
bimetal corrosion
b.
intergranular corrosion
c.
localized corrosion
d.
uniform corrosion
ANSWER: intergranular corrosion
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Discussion
Sravanthi
-Posted on 16 Nov 15
Knife Line Attack: It is a type of intergranular corrosion which stabilizes steel which is in contact with the weld after heating till the sensitization temperature.
- This type of corrosion is called as knife line attack as the attack appears razor sharp.
- Knife line attack can be prevented by restabilizing metals by post welding heat treatment at a temperature of 1065°C.
- Intergranular corrosion: This corrosion occurs on the grain boundaries of metals. This corrosion is caused due to difference in chemical composition, migration of impurities, etc.
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