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题名: A Novel Method for Achieving Gradient Microstructure in a Cu-Al Alloy: Surface Spinning Strengthening (3S)
作者: Ren, Chuan-Xi;  Wang, Qiang;  Zhang, Zhen-Jun;  Zhu, Yan-Kun;  Zhang, Zhe-Feng
发表日期: 2017-3-1
摘要: A new designed surface strengthening method, surface spinning strengthening (3S), was applied to achieve gradient microstructure in the surface layer of a Cu-11 at.% Al alloy. According to the level of grain refinement, the gradient microstructure can be divided into four zones, including nanoscale grain zone, ultra-fine grain zone, fine grain zone and coarse grain zone from the surface to the matrix. Meanwhile, a plenty of grain boundaries and twin boundaries were introduced to inhibit the dislocation motion in the surface layer during the plastic deformation process. Consequently, the hardened layer with a microhardness gradient and high residual compressive stress was produced on the samples, and the yield strength of the Cu-11 at.% Al alloy was effectively improved after 3S processing due to the strengthening effect caused by the gradient microstructure.
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Recommended Citation:
Ren, Chuan-Xi,Wang, Qiang,Zhang, Zhen-Jun,et al. A Novel Method For Achieving Gradient Microstructure In A Cu-al Alloy: Surface Spinning Strengthening (3s)[J]. Acta Metallurgica Sinica-english Letters,2017,30(3):212-217.

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