Method for production of performance enhanced metallic materials

摘要

A method for production of a metallic material from a semifinished metallic billet, the semifinished metallic billet including a nanocrystalline microstructure and/or an ultrafine-grained microstructure, the method including the steps of (1) subjecting the semifinished metallic billet to a rotary incremental forming process to form an intermediate wrought metallic billet, and (2) subjecting the intermediate wrought metallic billet to a high rate forming process to form a metallic product.

主权项

1. A method for production of metallic material from a semifinished metallic billet, said semifinished metallic billet comprising at least one of a nanocrystalline microstructure and an ultrafine-grained microstructure, said method comprising:
subjecting said semifinished metallic billet to a rotary incremental forming process to form an intermediate wrought metallic billet; and subjecting said intermediate wrought metallic billet to a high rate forming process, said high rate forming process being defined by an average equivalent strain rate of at least about 10 s−1.