Manufacturing titanium alloy component by beta forming
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United States of America Patent
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Sep 14, 1993
Grant Date -
N/A
app pub date -
Nov 15, 1991
filing date -
Mar 20, 1990
priority date (Note) -
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Abstract
A titanium alloy is prepared containing 2 to 4% by weight of aluminum, 1.5 to 2.5% by weight of vanadium, 0.20 to 0.45% by weight of a rare earth element (not essential). 0.05 to 0.11% by weight of sulfur (not essential), and titanium substantially for the remainder, the ratio of the rear earth element content to the sulfur content ranging from 3.8 to 4.2. This titanium alloy is rough-formed and hot-forged at a temperature in a .beta. region, and the resulting titanium alloy ingot is processed directly into a titanium alloy component having a desired shape. The titanium alloy component thus manufactured has a satisfactory fatigue strength and is also excellent in machinability, and can be used for connecting rods, valves, retainers, etc. to be incorporated in the engine of an automobile.
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