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单词 age hardening
释义

Definition of age hardening in English:

age hardening

noun
mass noun
  • Spontaneous hardening of a metal which occurs if it is quenched and then stored at ambient temperature or treated with mild heat.

    Example sentencesExamples
    • It is also possible to get age hardening from a martensitic alpha structure, obtained by rapid quenching of the alloy from the beta field, but there is some loss of ductility in this condition.
    • The effect of microstructure on fatigue is less well understood, though in the case of 2000 series alloys, the presence of coarser age hardening precipitates is undesirable.
    • These methods include annealing, stress relieving, stress equalizing, solution treating and age hardening.
    • By combining cold working with heat treatment, higher strengths can be obtained than can be achieved by either cold working or age hardening alone.
    • Most beta alloys can be welded, but because aged welds in beta alloys can be quite brittle, heat treatment to strengthen the weld by age hardening should be used with caution.
    • Up to 0.3% Cd may be added to aluminum-copper alloys to accelerate the rate of age hardening, increase strength, and increase corrosion resistance.
    • Most of the heat treatable alloys exhibit age hardening at room temperature after quenching, the rate and extent of such hardening varying from one alloy to another.
    • Once the part has been formed, it can be subjected to age hardening.
    • Heat treatment may be necessary to meet specification requirements, such as stress relief of a fabricated structure to avoid age hardening.
    • The precipitation-hardening or age hardening, as it is often called, is accomplished by the addition of increased amounts of titanium and aluminum along with special heat treatments.
    • The structure of the alloys is relatively simple: the main constituent is Mg 2 Si, which in the heat treated condition is in solution and to which is due the age hardening after artificial aging.
    • Within limits, cold working the alloy between solution annealing and age hardening increases both the rate and the magnitude of the age-hardening response in wrought products.
    • The importance of elastic misfit strains in age hardening has long been recognized.

Derivatives

  • age-hardened

  • adjective
    • Age-hardenable alloys are furnished in the solution-treated condition, in the solution treated and cold worked condition or in the age-hardened condition.
      Example sentencesExamples
      • Forgings and hot-finished extruded products are available in the solution-annealed temper and the annealed and age-hardened temper.
      • From the study on tensile deformation and fracture in these age-hardened materials, it is evident that two opposing factors must be balanced in order to attain the optimum combination of properties.
      • This complex steel is described by Humberto Raposo, the inventor, as a ‘premium melted, age-hardened alloy.’
 
 

Definition of age hardening in US English:

age hardening

noun
  • Spontaneous hardening of a metal which occurs if it is quenched and then stored at ambient temperature or treated with mild heat.

    Example sentencesExamples
    • The structure of the alloys is relatively simple: the main constituent is Mg 2 Si, which in the heat treated condition is in solution and to which is due the age hardening after artificial aging.
    • These methods include annealing, stress relieving, stress equalizing, solution treating and age hardening.
    • Most of the heat treatable alloys exhibit age hardening at room temperature after quenching, the rate and extent of such hardening varying from one alloy to another.
    • The effect of microstructure on fatigue is less well understood, though in the case of 2000 series alloys, the presence of coarser age hardening precipitates is undesirable.
    • Once the part has been formed, it can be subjected to age hardening.
    • Most beta alloys can be welded, but because aged welds in beta alloys can be quite brittle, heat treatment to strengthen the weld by age hardening should be used with caution.
    • It is also possible to get age hardening from a martensitic alpha structure, obtained by rapid quenching of the alloy from the beta field, but there is some loss of ductility in this condition.
    • The precipitation-hardening or age hardening, as it is often called, is accomplished by the addition of increased amounts of titanium and aluminum along with special heat treatments.
    • Heat treatment may be necessary to meet specification requirements, such as stress relief of a fabricated structure to avoid age hardening.
    • By combining cold working with heat treatment, higher strengths can be obtained than can be achieved by either cold working or age hardening alone.
    • Up to 0.3% Cd may be added to aluminum-copper alloys to accelerate the rate of age hardening, increase strength, and increase corrosion resistance.
    • Within limits, cold working the alloy between solution annealing and age hardening increases both the rate and the magnitude of the age-hardening response in wrought products.
    • The importance of elastic misfit strains in age hardening has long been recognized.
 
 
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更新时间:2024/11/13 12:19:16