Please enable JavaScript.

Coggle requires JavaScript to display documents.

PM Moataz - Titanium 2 - Coggle Diagram

- - - - Size of \(\alpha\) colonies
      - Width of \(\alpha\) lamellae
      - GB \(\alpha\) layer
    - - Ti3Al in \(\alpha\)
      - Secondary \(\alpha\) in \(\beta\)
  - - - :arrow_down: Ductility, :arrow_up: toughness
      - Easy nucleation, difficult growth
    - - :arrow_up: Ductility, :arrow_down: toughness
      - Difficult nucleation, easy growth
- - - - Al dies used to make wax shapes :arrow_right: cheap to make
      - Wax shapes assembled into tree and coated in stucco. Wax removed at 120C and stucco fired at high temp. 24hr later metal poured in
      - Expensive, good surface finish and dimensional tolerance, net shape capability
      - Used for turbine blades, medical, jewellery, radar
  - - - Heated material applying pressure with or without a die
      - Used for high strength components, castign defects are sealed, engine crankshafts, connecting rods, gears and engine structural components
      - Types
        
        Hot :fire: vs cold :snowflake:
        :fire: most common, significant deformation and need to reduce strength and increase ductility
        :snowflake: Better strength from strain hardening but harder to do
        
        Die or not
        Open die compressed between two flat dies, allowing metal to flow laterally without constraint
        Impression die Die contains cavity, constraining metal creating flash
        Flashless forging Part is completely constrained in die
      - \(\alpha\) Ti is hard to deform, Hihg flow stresses, high forging loads or temps required to forge \(\beta\)
    - - Pancake produced from stock and pierced to form doughnut, pressure is applied and diameter of ring is increased as ring spins against rollers