Latest Annealing Stories

2008-02-29 03:00:30

By Trabadelo, V Iturriza, I The microstructure of powder metallurgy T42 high speed steel has been analysed after isothermal annealing. The heat treatment parameters (austenitising temperature, annealing time and annealing temperature) have been chosen aiming at obtaining a moderate hardness (50 HRC) adequate for structural applications. It has been demonstrated that it is possible to attain the targeted hardness through a globular pearlitic matrix microstructure at temperatures markedly...

2008-02-29 03:00:28

By Deva, A De, S K; Jha, B K It is well known that dissolved nitrogen in ferrite seriously impairs the formability of hot rolled unalloyed steel.1-3 Boron being a strong nitride former, combines aggressively with dissolved nitrogen in steel, and thereby improves the forming properties. Further, atomic ratio of boron to nitrogen (B/N) plays an important role in influencing the microstructure and properties3,4 of low carbon steel. Whenever excess boron is present in solution in austenite, it...

Word of the Day
  • The offense of persistently instigating lawsuits, typically groundless ones.
  • An unlawful breach of duty on the part of a ship's master or crew resulting in injury to the ship's owner.
  • Sale or purchase of positions in church or state.
This word ultimately comes from the Old French word 'barater,' to cheat.