Characteristic for TNW700 high temperature titanium superplastic properties Available to Purchase

TNW700 is a kind of titanium material with higher temperature serving properties, which can be exposed in 500°C long term working atmosphere. Superplastic forming is an effective way for part forming in aeronautic filed to stratify the demand of light weight. In this work, the superplastic properties of TNW700 was investigated by performing superplastic uniaxial tension at four temperatures of 890°C, 910°C, 930°C and 950°C and five initial strain rates of 2.1 × 10⁻⁴s⁻¹, 4.2 × 10⁻⁴s⁻¹, 1.0 × 10⁻³s⁻¹, 2.1 × 10⁻³s⁻¹, 4.2 × 10⁻³s⁻¹, and the material parameters K value and m value of Backofen equation were calculated on basis of the obtained true strain-stress curves. The activation energy was also determined. The results show that, the maximum elongation is 550.25% at 930°C and at 1.0 × 10⁻³s⁻¹, and m values for different temperature is in the extent of 0.324-0.347, and the determined activation energy Q is 593.12 kJ.mol⁻¹.