Exploratory search "manufacturing processes", "casting", "cold rolling", etc. in TechCat+ for books, ebooks, journal articles.
Find peer reviewed articles in many of the databases. A good one to start researching is ScienceDirect. But don't limit yourself to just one database.
SAE Transactions is not peer reviewed but the collection has many high quality papers focusing on application.
Highly recommended databases - good for literature searches. Click "FullTextFinder" link to locate available full text.