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自70年代早期，Ti一3Al一2．5V已是液压管道用材．而由卫一6Al－4V(Ti－64)合金生产的无缝管，其强度和比强度出Ti一3Al一2.5V管高出20％-30但Ti－64合金一个主要的缺点是其室温成形性能、特别是大直径无经营的弯曲性能差．航空用的Ti－64合金管弯曲时的椭圆度受其成形性能的影
Since the early 1970s, Ti a 3Al a 2.5V is the hydraulic pipe timber. The seamless tube produced by Wei-6Al-4V (Ti-64) alloy has a strength and specific strength of 20% -30% higher than Ti-3Al-2.5V tube. However, one of the major disadvantages of Ti-64 alloy is its room temperature Formability, especially large diameter non-operating bending performance is poor. The ellipticity of aerospace Ti-64 alloy tubes is affected by their formability