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一、前言 Ti-6A1-4V(国产牌号TC4)在国外是所有α+β型钛合金中生产量最大,使用亦最为广泛的一种。目前我国航空部门在新机种上也将开始比较多地使用这种合金。这就向我们提出了TC4钛板的成形性问题。国外把这种合金称为退火钛合金中最难成形的一种合金,与当前航空部门常用的TA2(工业纯钛),TC1(Ti-2A1-1.5Mn)相比,TC4钛合金的室温强度是前者的2.1倍,是后者的1.5倍,而延伸率只有前者的2/5,后者的3/5。这就决定了
I. Introduction Ti-6A1-4V (domestic brand TC4) is the most widely used and most widely used α + β titanium alloy in foreign countries. At present, China’s aviation sector will also begin to use more of this alloy on new aircraft models. This presents us with TC4 titanium plate formability problems. Abroad referred to this alloy as the most difficult to form an alloy annealed titanium alloy, with the current aviation sector commonly used TA2 (industrial pure titanium), TC1 (Ti-2A1-1.5Mn) compared to TC4 titanium alloy room temperature strength Is 2.1 times the former, which is 1.5 times the latter, while the elongation rate is only 2/5 of the former, the latter 3/5. This is the decision