Hierarchical nanotwins in single-crystal-like nickel with high strength and corrosion resistance produced via a hybrid technique. Issue 3 (19th December 2019)

• Record Type: Journal Article
• Authors: Li, Qiang; Xue, Sichuang; Price, Patrick; Sun, Xing; Ding, Jie; Shang, Zhongxia; Fan, Zhe; Wang, Han; Zhang, Yifan; Chen, Youxing; Wang, Haiyan; Hattar, Khalid; Zhang, Xinghang
• Is Part Of: Nanoscale. Volume 12:Issue 3(2020)
• Page Start: 1356
• Page End: 1365
• Publication Date: 2019-12-19
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c9nr07472d
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Single-crystal-like nanotwinned Nickel was prepared via a hybrid technique and it renders superb mechanical behaviors and corrosion resistance. Abstract : High-density growth nanotwins enable high-strength and good ductility in metallic materials. However, twinning propensity is greatly reduced in metals with high stacking fault energy. Here we adopted a hybrid technique coupled with template-directed heteroepitaxial growth method to fabricate single-crystal-like, nanotwinned (nt) Ni. The nt Ni primarily contains hierarchical twin structures that consist of coherent and incoherent twin boundary segments with few conventional grain boundaries. In situ compression studies show the nt Ni has a high flow strength of ∼2 GPa and good deformability. Moreover, the nt Ni has superb corrosion behavior due to the unique twin structure in comparison to coarse grained and nanocrystalline counterparts. The hybrid technique opens the door for the fabrication of a wide variety of single-crystal-like nt metals with unique mechanical and chemical properties.