摘要
The present invention provides a method for production of a metallic material from a semi-finished metallic billet, The semi-finished metallic billet includes a nanocrystaUine microstructure and/or an ultrafine-grained microstructure. The method includes the steps of （1） subjecting the semifinished metallic billet to a rotary incremental forming process to form an intermediate wrought metallic billet,
2016-51.Method for production of performance enhanced metallic materials Patent No.:US2016045949(A1)Date of Patent:2016-02-18Inventors:Ali Yousefiani,et al Assignee:Boeing Co[US]The present invention provides a method for production of a metallic material from a semi-finished metallic billet.The semi-finished metallic billet includes a nanocrystalline microstructure and/or an
