Effect of Grain Size Distribution on Tensile Properties of Electrodeposited Nanocrystalline Nickel

机译：粒度分布对电沉积纳米晶镍拉伸性能的影响

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We have produced dense and ductile nanocrystalline nickel with various grain size distributions using electrodeposition techniques. The strength of the nickel deposits fell within the scatter band of the general Hall-Petch curve for nickel. However, large variations in yield strength, strain hardening rate and tensile elongation were associated with a relatively small change in the average grain size. The scatter in the elongation data has been attributed to the formation of nodules and the presence of voids. The variations in strength and strain hardening rate have been shown to be associated with the changes in the grain size distribution. A model based on confined dislocation motion and composite behavior has been developed for predicting the stress-strain behavior of the nanocrystalline nickel.

机译：我们已经使用电沉积技术生产了具有各种晶粒尺寸分布的致密且易延展的纳米晶镍。镍沉积物的强度落在镍的一般Hall-Petch曲线的散射带内。但是，屈服强度，应变硬化速率和拉伸伸长率的较大变化与平均晶粒尺寸的较小变化有关。伸长率数据中的散布归因于结节的形成和空隙的存在。已经显示出强度和应变硬化速率的变化与晶粒尺寸分布的变化有关。已经建立了基于有限位错运动和复合行为的模型来预测纳米晶镍的应力应变行为。

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《Symposium on Structure and Mechanical Properties of Nanophase Materials- Theory and Computer Simulation vs. Experiment Nov 28-30, 2000, Boston, Massachusetts, U.S.A.》|2000年|p.2.7.1-2.7.6|共6页
会议地点 Boston MA(US);Boston MA(US)
作者
Fereshteh Ebrahimi; Zunayed Ahmed; Kristin L. Morgan;
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Materials Science and Engineering Department, University of Florida, Gainesville, FL 32611;

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正文语种 eng
中图分类一般工业技术;
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Effect of Grain Size Distribution on Tensile Properties of Electrodeposited Nanocrystalline Nickel

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