Deformation twinning in LiAlO2 at elevated temperatures

作者：Tsai, Fu Yu; Hsu, Chin Chia; Kao, Po We; Chang, Liuwen^*; Chou, Mitch M C

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2012, 551: 218-221.

DOI：10.1016/j.msea.2012.05.010

• gamma-LiAlO2
• Mechanical properties
• High-temperature deformation
• Twinning

High temperature compressive tests were carried out on gamma-LiAlO2 single crystals along their [1 0 0] and [0 0 1] directions. It was found that the LiAlO2 crystal deformed via a twinning process while compressed along [1 0 0]. The twinning elements for the observed deformation twin are summarized as K-1: (1 (1) over bar 2), K-2: ((1) over bar 1 2), eta(1): [(1) over bar 1 1], eta(2): [1 (1) over bar 1], and s = 0.305. No dislocation slips were observed associated with the twinning. When the crystal was compressed along [0 0 1], no twins but cracks were observed.

• 出版日期2012-8-15
• 单位中山大学