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  2. Strain hardening exponent - Wikipedia

    en.wikipedia.org/wiki/Strain_hardening_exponent

    Strain hardening exponent. The strain hardening exponent (also called the strain hardening index), usually denoted , is a measured parameter that quantifies the ability of a material to become stronger due to strain hardening. Strain hardening (work hardening) is the process by which a material's load-bearing capacity increases during plastic ...

  3. Work hardening - Wikipedia

    en.wikipedia.org/wiki/Work_hardening

    The stress at initial yield is σ0. Work hardening, also known as strain hardening, is the process by which a material's load-bearing capacity (strength) increases during plastic (permanent) deformation. This characteristic is what sets ductile materials apart from brittle materials. [1] Work hardening may be desirable, undesirable, or ...

  4. Flow stress - Wikipedia

    en.wikipedia.org/wiki/Flow_stress

    Flow stress. In materials science the flow stress, typically denoted as Yf (or ), is defined as the instantaneous value of stress required to continue plastically deforming a material - to keep it flowing. It is most commonly, though not exclusively, used in reference to metals. On a stress-strain curve, the flow stress can be found anywhere ...

  5. TRIP steel - Wikipedia

    en.wikipedia.org/wiki/TRIP_steel

    High strain hardening capacity and high mechanical strength lend these steels excellent energy absorption capacity. TRIP steels also exhibit a strong bake hardening effect. [ 5 ] Bake hardening is an increase in strength observed when work hardening during part formation is followed by a thermal cycle such as paint-baking.

  6. Necking (engineering) - Wikipedia

    en.wikipedia.org/wiki/Necking_(engineering)

    The portion where necking occurs may be called the neck of the specimen. In engineering and materials science, necking is a mode of tensile deformation where relatively large amounts of strain localize disproportionately in a small region of the material. The resulting prominent decrease in local cross-sectional area provides the basis for the ...

  7. Hardening (metallurgy) - Wikipedia

    en.wikipedia.org/wiki/Hardening_(metallurgy)

    Hardening (metallurgy) Hardening is a metallurgical metalworking process used to increase the hardness of a metal. The hardness of a metal is directly proportional to the uniaxial yield stress at the location of the imposed strain. A harder metal will have a higher resistance to plastic deformation than a less hard metal.

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