纯度为99.9%的多晶镍(晶粒尺寸为0.5～2 mm),被轧制到55%形变量,用测试显微硬度的手段研究选定晶粒内部的形变不均匀性,用扫描电镜(SEM)上的背散射电子衬度成像分析晶粒内不同位置的微观组织的变化.结果表明,与轧制方向成较大角度的晶界的影响导致晶粒内形变的不均匀性,造成微观组织及形变储能的不同,宏观上表现为显微硬度的不同.
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