COLD DEFORMATION MICROSTRUCTURES
COLD DEFORMATION MICROSTRUCTURES
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DOI：
10.1179/026708390790189993
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发表时间：
1990-11-01
影响因子：
1.8
通讯作者：
HANSEN, N
中科院分区：
文献类型：
--
作者：
HANSEN, N
描述了中至高层错能单相面心立方金属冷变形显微组织的演变。被认为是多晶金属的宏观应变住宿，它建议，晶粒细分在变形过程中的一个越来越小的规模，每个体积元素的特点是由一个单独的组合滑移系统。一些微观结构的观察（特别是铝，镍，铜）进行了说明，位错排列的一般原则的基础上，他们是低能量位错结构进行了讨论。它示出的微观结构的演变是非常相似的，在多晶金属和单晶变形的multislip，和冶金参数，如堆垛层错能和晶粒尺寸可以影响微观结构的方式进行检查。结合显微组织观察，讨论了冷变形过程中晶粒细化的一般原理。
The evolution of the cold deformation microstructure is described for medium to high stacking fault energy, single phase fcc metals. Macroscopic strain accommodation for polycrystalline metals is considered, and it is suggested that grains subdivide during deformation on a smaller and smaller scale, and that each volume element is characterised by an individual combination of slip systems. A number of microstructural observations (especially of aluminium, nickel, and copper) are described, and dislocation arrangements are discussed on the basis of the general principle that they are low energy dislocation structures. It is shown that the microstructural evolution is quite similar in polycrystalline metals and in single crystals deforming by multislip, and ways in which metallurgical parameters such as stacking fault energy and grain size can affect the microstructure are examined. The general principle of grain subdivision during cold deformation is discussed with reference to the microstructural observations.