Method for producing β-titanium alloy wire
AssigneesTerumo Kabushiki Kaisha, Tokusen Kogyo Co., Ltd.
InventorsNaoki Ishii, Takashi Kaneko, Shin Sumimoto, Hideki Yamamoto, Ichiro Nagao
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Abstract
The diamter of β-titanium alloy wire is reduced by cold wire-drawing and the β-titanium alloy wire is subjected to heat treatment. The heat treatment comprises the first aging process for precipitation strengthening and the second aging process for removing processing strain. β-titanium alloy wire is heat-treated under the supply of tension at the second aging process.
Claims5
A method for producing β-titanium alloy wire comprising the steps of reducing the diameter of β-titanium alloy wire by cold wire drawing followed by heat treatment is characterized in that the heat treatment comprises the first aging process for precipitation strengthening and the second aging process for removing processing strain, and β-titanium alloy wire is heat-treated under the supply of tension at the second aging process.
A method for production β-titanium alloy wire comprising a diameter of 0.01 to 2.0 mm, said method comprising the steps of subjecting β-titanium alloy wire to solution treatment, coating said β-titanium alloy wire with an oxide film, and giving a reduction ratio of area by cold wire drawing of 70% to 99% to said β-titanium alloy wire in order to provide β-titanium alloy wire having a diameter of 0.01 to 2.0 mm and characterized in that an average crystal grain area A of β-phase in a cross section structure is 1 to 80 μm and a ratio of L/A is 5 to 1000.
Dependencies are inferred from the claim text.