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材料成型金属学补充-6
Even under the most ideal crystal growth conditions, metals are not crystallographically perfect. Instead, the lattice may contain many imperfections.
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材料成型金属学补充-5
Platic deformation results in a permanent change of shape,meaning that after load in removed, then metal will not return to its original dimensions. T
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材料成型金属学补充-4
To understand the different deformation modes, the structure of a metal must be considered. Elastic deformation can be conceptualized by considering t
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材料成型金属学补充-3
Interstitial atoms can also be present within the metal. In this case, the atom is much smaller than the matrix atoms and is located in the gaps. Most
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材料成型金属学补充-2
The strength of metal will also be related to the imputity content. Sometimes elements are intentionally added to metals, such as adding nikel to copp
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材料成型金属学补充-1
Because most of metals are comprised of many grains, properties such as yield strength and ductility (i.e. elongation to fracture) are also highly dep