Recommended Citation
Shen, Chao; Li, Jin; Niu, Tongjun; Cho, Jaehun; Shang, Zhongxia; Zhang, Yifan; Shang, Anyu; Yang, Bo; Xu, Ke; Garcia, R. Edwin; Wang, Haiyan; and Zhang, Xinghang, "Achieving room temperature plasticity in brittle ceramics through elevated temperature preloading" (2024). Purdue University Libraries Open Access Publishing Fund. Paper 192.
http://dx.doi.org/10.1126/sciadv.adj4079
DOI
10.1126/sciadv.adj4079
Date of this Version
4-17-2024
Abstract
Ceramic materials with high strength and chemical inertness are widely used as engineering materials. However, the brittle nature limits their applications as fracture occurs before the onset of plastic yielding. There has been limited success despite extensive efforts to enhance the deformability of ceramics. Here we report a method for enhancing the room temperature plastic deformability of ceramics by artificially introducing abundant defects into the materials via preloading at elevated temperatures. After the preloading treatment, single crystal (SC) TiO2 exhibited a substantial increase in deformability, achieving 10% strain at room temperature. SC α-Al2O3 also showed plastic deformability, 6 to 7.5% strain, by using the preloading strategy. These preinjected defects enabled the plastic deformation process of the ceramics at room temperature. These findings suggest a great potential for defect engineering in achieving plasticity in ceramics at room temperature.
Comments
This is the publisher PDF of Chao Shen et al., Achieving room temperature plasticity in brittle ceramics through elevated temperature preloading. Science Advances 10,eadj4079(2024). This article is distributed under a CC-BY-NC license, and is available at DOI: 10.1126/sciadv.adj4079.