Nanograins were induced in solid solution CuCrZr alloy by surface mechanical grinding treatment, followed by aging treatment to investigate the precipitation behavior and hardening effect of the nanograins. Experimental results showed that body-centered cubic Cr nanoparticles precipitated at nanograin boundaries accompanied with slight nanograin coarsening, yielding a considerable precipitation hardening, even twice that of coarse grains. The hardening mechanism of grain boundary nanoprecipitates in nanograins was discussed.

中文翻译：

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纳米晶 CuCrZr 合金的强化沉淀硬化

通过表面机械研磨处理在固溶体 CuCrZr 合金中诱导纳米晶，随后进行时效处理，以研究纳米晶的析出行为和硬化效果。实验结果表明，体心立方Cr纳米颗粒在纳米晶界处析出，伴随着纳米晶的轻微粗化，产生了相当大的沉淀硬化，甚至是粗晶的两倍。讨论了纳米晶中晶界纳米沉淀的硬化机制。