Comparison of Microstructure and Mechanical Properties for TA15 Titanium Alloy Large Forgings under Two Die-forging Equipments
800MN die-forging press and 1MJ die-forging hammer were employed on TA15 titanium alloy to produce large aerial forgings. Microstructure and mechanical properties of TA15 forgings under the two forging equipments were investigated and compared. Results show that the forgings under 800MN die-forging press have a preferable plastic flow. The 800MN die-forging press will cause lager deformation and lower strain rate during every heating. The forgings under 800MN die-forging press have more fine grain size after recrystallization compared with those under 1MJ die-forging hammer. It also had a higher percentage of primary alpha phase as well as more fine α precipitation under 800MN die-forging press. As a result, its tensile properties and impact toughness and fracture toughness of the forgings are higher than those under 1MJ forging. Furthermore, the costs and quality are more ideal under 800MN die-forging press because the strain and strain rate are more controllable and the forging times are less.
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Document Type: Research Article
Publication date: June 15, 2015
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- Journal of Aeronautical Materials, founded in 1981, is sponsored by Chinese Society of Aeronautics and Astronautics, and edited and published by editiorial board of Journal of Aeronautical Materials,AVIC Beijing Institute of Aeronautical Material(BIAM).It has been indexed in Scopus (Holland), INSPEC (U.K.), AJ (Russia), CA (US) and UPD (US). Journal of Aeronutical Materials is devoted to reporting new and original experimental and theoretical basic research of aeronautical materials, such as composite design,technology,testing and charaacterizing, and so on.
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