About: Guinier–Preston zone

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A Guinier–Preston zone, or GP-zone, is a fine-scale metallurgical phenomenon, involving early stage precipitation. GP-zones are associated with the phenomenon of age hardening, whereby room-temperature reactions continue to occur within a material through time, resulting in changing physical properties. In particular, this occurs in several aluminium series, such as the 6000 and 7000 series alloys. The zone is named after André Guinier and George Dawson Preston who independently identified the zones in 1938.

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  • A Guinier–Preston zone, or GP-zone, is a fine-scale metallurgical phenomenon, involving early stage precipitation. GP-zones are associated with the phenomenon of age hardening, whereby room-temperature reactions continue to occur within a material through time, resulting in changing physical properties. In particular, this occurs in several aluminium series, such as the 6000 and 7000 series alloys. Physically, GP zones are extremely fine-scaled (on the order of 3–10 nm in size) solute enriched regions of the material, which offer physical obstructions to the motion of dislocations, above that of the solid solution strengthening of the solute components. In 7075 aluminium for example, Zn–Mg clusters precede the formation of equilibrium MgZn2 precipitates. The zone is named after André Guinier and George Dawson Preston who independently identified the zones in 1938. (en)
  • GPゾーン（英: Guinier-Preston zone）は、時効硬化型アルミニウム合金において、時効過程で母相中にあらわれる溶質原子の集合体である。 (ja)
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  • GPゾーン（英: Guinier-Preston zone）は、時効硬化型アルミニウム合金において、時効過程で母相中にあらわれる溶質原子の集合体である。 (ja)
  • A Guinier–Preston zone, or GP-zone, is a fine-scale metallurgical phenomenon, involving early stage precipitation. GP-zones are associated with the phenomenon of age hardening, whereby room-temperature reactions continue to occur within a material through time, resulting in changing physical properties. In particular, this occurs in several aluminium series, such as the 6000 and 7000 series alloys. The zone is named after André Guinier and George Dawson Preston who independently identified the zones in 1938. (en)
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  • Guinier–Preston zone (en)
  • GPゾーン (ja)
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