In this paper,the hot compression tests were carried out on the TB3 titanium alloy bar with a typical specification of Φ4.88 mm for aerospace fasteners.The hot compression rheological curves of TB3 titanium alloy were modified by friction-temperature double correction,and the pa-rameters such as thermal activation energy Q,stress index n,stress level parameter α and temper-ature-independent constant lnA were calculated by using the modified data.A more accurate Ar-rhenius hyperbolic sine constitutive equation is constructed.The constitutive equation of TB3 tita-nium alloy obtained by the study can provide support for the finite element simulation and process optimization of stamping and forming of aerospace fasteners and precision structural parts.
关键词
热压缩实验/摩擦-温度双修正/本构方程
Key words
Hot compression test/Friction-temperature double correction/Constitutive equation
维普
万方数据