See taking metallurgy branch has always been a high risk option. Because see in metallurgy branch , they don't have so much scope for jobs in companies except some psu's . That also PSU's take very less no. of graduates . 

Many who take metallurgy branch end up doing phd's and researches. If you are highly interested in material science. Then you can go for it.

 Talking about colleges. NIT TRICHY is having a upper hand then NIT SURATHKAL.

Hope it helps.

Thank you.