| 摘要 |
<p>A β-type titanium alloy that is excellent in cold workability, exhibits high strength after aging and is excellent in stability of properties. This alloy comprises, in terms of mass percentage, 15 to 25% of V, 2.5 to 5% of Al, 0.5 to 4% of Sn, 0.20% or less of O (oxygen), 0.03% or less of impurity H, 0.40% or less of Fe, 0.05% or less of C and 0.02% or less of N. The process for producing the alloy is characterized in that pickling with an aqueous solution containing 3 to 40 mass% of HF as a main component and pickling with an aqueous solution containing 3 to 6 mass% of HF and 5 to 20 mass% of HNO3 are performed in sequence.</p> |
