Acta Metallurgica Sinica (English Letters) ›› 2019, Vol. 32 ›› Issue (4): 452-460.DOI: 10.1007/s40195-018-0859-5

• Orginal Article • Previous Articles     Next Articles

Correlation Between Crystal Rotation and Redundant Shear Strain in Rolled Single Crystals: A Crystal Plasticity FE Analysis

Hui Wang1(), Cheng Lu1, Kiet Tieu1, Yu Liu1, Rui Wang1, Jintao Li1   

  1. School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
  • Received:2018-08-30 Revised:2018-10-25 Online:2019-04-10 Published:2019-04-19
  • Contact: Wang Hui
  • About author:

    Dr. Kun-Kun Deng was born in 1983 and was awarded Ph. D in Harbin University of Technology in 2011. After graduation, he worked in the College of Materials Science and Engineering, Taiyuan University of Technology. At the same time, he continued his research work on the design, fabrication and processing of advanced Mg-based material in. Now, he is the vice chairman of Youth Committee in Magnesium Alloy Branch of Chinese Materials Research Society. He was denoted as young academic pacemaker of Shanxi Province in 2018. He has held two projects of National Nature Science Foundation of China, one project of Specialized Research Fund for the Doctoral Program of Higher Education, one Project of International Cooperation in Shanxi and two projects of Natural Science Foundation of Shanxi. He has published more than 60 articles. The time cited is more than 840 (without selfcitations), and the H-index is 22. In addition, he has published one academic monograph and acquired eight Chinese patents.

Abstract:

The correlation between crystal rotation and redundant shear strain in rolled single crystals was investigated by using the crystal plasticity finite element (CPFE) model in this paper. The deformation in aluminium single crystals of four representative orientations (rotated-Cube, Goss, Copper, and Brass) after rolling and plain strain compression was simulated, and the predictions have been validated by the experimental observations. In the rotated-Cube and Goss, the redundant shear strain and crystal rotation were in the same pattern, alternating along the thickness, while the relation between them was not obvious for the Copper and Brass due to their asymmetrical distributions of activated slip systems. The relations between slip system activation, crystal rotation, and shear strain were investigated based on the CPFE model, and the correlation between shear strain and crystal rotation has been built.

Key words: Crystal plasticity finite element, Single crystal, Crystal rotation, Shear strain, Orientation stability