dislocation martensite

  • 1Shape memory alloy — A shape memory alloy (SMA, also known as a smart alloy, memory metal, or muscle wire) is an alloy that remembers its shape, and can be returned to that shape after being deformed, by applying heat to the alloy. When the shape memory effect is… …

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  • 2Grain boundary — A grain boundary is the interface between two grains in a polycrystalline material. Grain boundaries disrupt the motion of dislocations through a material, so reducing crystallite size is a common way to improve strength, as described by the Hall …

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  • 3Deep Cryogenic Treatment — is a material science and involves the process of reducing the temperature of components over an extended period of time to extreme cold levels, usually slightly below 300°F. Liquid Nitrogen is a common fuel for the process being relatively… …

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  • 4FER — Le fer est l’élément chimique métallique de numéro atomique 26, de symbole Fe. Dans la classification périodique, il se place dans la première série de transition entre le manganèse et le cobalt. Ses propriétés chimiques sont voisines de celles… …

    Encyclopédie Universelle