Hello, Metallurgy deals with material science in detail. It's also a sub stream of Mechanical Engineering. Mechanical Engineers have Metallurgy as a subject but Metallurgy students completely understands about the materials.
For more details please check below links.

https://www.careers360.com/metallurgical-engineering-course

https://engineering.careers360.com/articles/metallurgical-engineering-0/amp

Good Luck!!