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有兩種面積缺陷,即孿生和晶粒間界.Two area defects are twins and grain boundaries.雜質(zhì)常常在晶粒間界偏析.Impurities tend to segregate at grain boundaries.他們對最終組織 、 晶粒尺寸和合金性能都有較大的影響.They impinge on the final structure, grain size and properties of t...