EP 3878997 A1 20210915 - METHOD OF FORMING PRECURSOR INTO A TI ALLOY ARTICLE
Title (en)
METHOD OF FORMING PRECURSOR INTO A TI ALLOY ARTICLE
Title (de)
VERFAHREN ZUR VERARBEITUNG EINES VORPRODUKTS EINER TI-LEGIERUNG ZU EINEM ARTIKEL
Title (fr)
PROCÉDÉ DE FABRICATION D'UN ARTICLE EN ALLIAGE DE TI
Publication
Application
Priority
EP 20275056 A 20200311
Abstract (en)
A method of thermomechanically forming, for example forging, rolling, extruding or drawing, an article from a precursor thereof, is described. The method comprises: providing the precursor, for example an ingot, a forging stock, a forging, a bar, a billet or a plate, comprising, substantially comprising, essentially comprising and/or consisting of an α + β Ti alloy having a beta transus temperature β<sub>transus</sub>, wherein the precursor defines a set of portions including a first portion; and thermomechanically forming the article from the precursor by heating the first portion and deforming the heated first portion by a total true strain ε<sub>1,total</sub>, wherein the total true strain ε<sub>1,total</sub> is greater than a predetermined threshold true strain ε<sub>threshold</sub>; wherein thermomechanically forming the article from the precursor comprises i iterations of: (a) heating the first portion to a temperature T<sub>i</sub> during a time t<sub>i</sub>, wherein the temperature T<sub>i</sub> is at most the beta transus temperature β<sub>transus</sub>; (b) deforming the heated first portion by a true strain ε<sub>1,i</sub>, wherein the true strain ε<sub>1,i</sub> is at most the predetermined threshold true strain ε<sub>threshold</sub>; and (c) repeating steps (a) and (b) until the cumulative true strain ε<sub>1,cumulative</sub> = ∑<sub>i</sub>ε<sub>1,i</sub> is the total true strain ε<sub>1,total</sub>, wherein i is a natural number greater than or equal to 2.
IPC 8 full level
C22F 1/18 (2006.01)
CPC (source: EP)
C22F 1/183 (2013.01)
Citation (search report)
- [X] EP 2526215 A2 20121128 - ATI PROPERTIES INC [US]
- [X] EP 2596143 A1 20130529 - ATI PROPERTIES INC [US]
- [X] EP 3245308 A1 20171122 - ATI PROPERTIES LLC [US]
- [X] US 2016201165 A1 20160714 - FOLTZ IV JOHN W [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 20275056 A 20200311