Abstract

The influences of pre-torsion deformation on microstructure and tensile strength of commercial as-extruded Cu rods with cylindrical shape have been investigated in this study by twisting the rods to different numbers of revolutions. The results indicated that the pre-torsion can significantly enhance the tensile yield strength of the as-extruded Cu rods without changing their shape and size. The increase in tensile yield strength is mainly due to the gradient lamellar dislocation substructures (LDS) embedded in elongated fiber grains introduced by pre-torsion pure shear deformation.

Enhancing tensile strength of Cu by introducing gradient microstructures via a simple torsion deformation

• Ning Guo^{a, b, ,} ,

• Bo Song^{a, ,} ,

• Hongbing Yu^c,

• Renlong Xin^b,

• Bingshu Wang^d,

• Tingting Liu^a

投稿经历：

一开始投稿scripta mater,拒绝送审。申诉成功后，再投送审，评审意见博主都不好意思公开说，很气愤···

科研心得：

实验数据再漂亮，也要沉得住气。戒浮戒躁才能再接再厉！