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Forged titanium alloy material and method for producing same, and ultrasonic inspection method
Forged titanium alloy material and method for producing same, and ultrasonic inspection method
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机译:钛合金锻造材料及其制造方法和超声波检查方法
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摘要
A forged titanium alloy material having a duplex grain structure composed of flat grains and non-flat grains, wherein the flat grains are crystal grains of prior-β grains each having an aspect ratio of more than 3 and the non-flat grains are crystal grains of prior-β grains each having an aspect ratio of 1 to 3 inclusive. The forged titanium alloy material is characterized in that the average equivalent circle diameter of the non-flat grains is 100 μm or less, flat grains each having a thicknesswise diameter of 20 to 500 μm are contained in an amount of 40 to 98%, non-flat grains each having a thicknesswise diameter of 10 to 150 μm are contained in an amount of 2 to 50%, and the flat grains each having the above-mentioned thicknesswise diameter and the non-flat grains each having the above-mentioned thicknesswise diameter are contained in the total amount of 90% or more.
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