Thin parts made of β or quasi-β titanium alloys; manufacture by forging
AssigneeSnecma Moteurs
InventorsBlandine Barbier, Philippe Gallois, Claude Mons, Agathe Venard, Pascal Vignolles
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Abstract
The present invention provides non-axially symmetrical manufactured parts of thickness less than 10 mm, made of β or quasi-β titanium alloy, having a core microstructure constituted by whole grains presenting a slenderness ratio greater than 4 and an equivalent diameter lying in the range 10 μm to 300 μm. The invention also provides a method of manufacturing the parts by forging.
Claims10
A non-axially symmetrical manufactured part having a thickness less than 10 mm, made of a quasi-β titanium alloy, and having a core microstructure comprising whole grains having a slenderness ratio greater than 4 and an equivalent diameter lying in the range of 10 μm to 300 μm, wherein the whole grains comprise lens-shaped forms, and non β-parts within the whole grains are α-needles, the manufactured part being made by a process comprising:
- obtaining an enameled blank;
- where necessary, transforming said blank into a long part of equivalent diameter less than 100 mm;
- forging said long part with a final heating operation carried out at a temperature above a β transition;
- quenching said forged long part;
- and
- tempering said quenched forged long part.
Dependencies are inferred from the claim text.