Jose Apraiz Barreiro Tratamientos Termicos De Los Acerospdf Best Direct

| Treatment | Heating range | Cooling method | Resulting microstructure | Property achieved | |-----------|---------------|----------------|--------------------------|-------------------| | | Above Ac₃ or Ac₁ | Very slow (furnace) | Coarse pearlite + ferrite/cementite | Maximum softness, ductility, machinability | | Normalizing (Normalizado) | Above Ac₃ | Still air | Fine pearlite | Homogenized grain, improved strength over annealed | | Quenching (Temple) | Above Ac₃ (or Ac₁) | Rapid (water, oil, polymer) | Martensite + retained austenite | Maximum hardness and wear resistance | | Tempering (Revenido) | Below Ac₁ (150–650°C) | Air or oil | Tempered martensite (martensite + fine carbides) | Reduce brittleness, relieve stresses, achieve target hardness/toughness |

As this is a classic text, the PDF versions widely circulated in academic circles are often scanned copies of older editions. While the core information remains valid, users should be aware that some specific industry standards (normas UNE, DIN, or ASTM) referenced in the book may have been updated or superseded since the publication of specific editions. | Treatment | Heating range | Cooling method

Iron-carbon diagrams, critical temperatures, microscopic constituents (ferrite, cementite, pearlite), TTT curves (isothermal transformation), and factors influencing hardening. microscopic constituents (ferrite