电沉积微纳米晶镍板微观表征与冷轧变形微观组织演化研究

Microstructure characterization of Electrodeposition of Micro/nanocrystalline nickel plate and Cold rolling deformation microstructure evolution research

摘要:

本研究以某公司生产的电沉积镍板为对象,研究了该电沉积镍的力学性能；同时为了深入探讨该金属的力学行为特别是塑性变形机制, 对其进行了不同程度的冷轧变形。实验结果表明：电沉积镍存在宽晶,尺寸约为0.5μm～1.5μm,同时存在生长孪晶。其抗拉强度平均在385MPa～461MPa之间,在垂直无始积片方向达到了最低值(385MPa)；在平行有始积片方向达到了最高值(461MPa)。电沉积镍经过多道次轧制,变形程度达到90%时,晶粒尺寸明显减小；轧制变形达到98%时才能压裂,说明试样塑性、韧性良好；随着变形程度的的增加,硬度逐渐增大,出现了加工硬化。轧制过程导致本来取向随机的晶粒在某些晶面和晶向出现择优,当轧制程度达到98%时,Tc(220)=94.1%,出现了(220)面的变形织构。

Abstract:

The study use a company"s production of electroplating nickel plate as the object, studied the mechanics performance of the electrodeposition of nickel:At the same time in order to explore the mechanical behavior of the metal plastic deformation mechanism, in particular, on the different degree of cold rolling deformation.The experimental results show that:Electroplating nickel exist wide crystal,Size is about 0.5μm～1.5μm,At the same time there is growth twin.The average tensile strength from 385 MPa to 461 MPa,In vertical beginningless product direction has reached the lowest (385 MPa); in parallel beginning product direction has reached the highest (461 MPa).