A strain-gradient crystal plasticity finite element method(SGCP-FEM) was utilized to simulate the compressive deformation behaviors of single-slip, (111)[101], oriented FCC single-crystal micro-pillars with two different slip-plane inclination angles, 36.3o and 48.7o, and the simulation results were compared with those from conventional crystal plasticity finite element method(CP-FEM) simulations. For the low slip-plane inclination angle, a macroscopic diagonal shear band formed along the primary slip direction in both the CP- and SGCP-FEM simulations. However, this shear deformation was limited in the SGCP-FEM, mainly due to the increased slip resistance caused by local strain gradients, which also resulted in strain hardening in the simulated flow curves. The development of a secondly active slip system was altered in the SGCP-FEM, compared to the CP-FEM, for the low slip-plane inclination angle. The shear deformation controlled by the SGCP-FEM reduced the overall crystal rotation of the micro-pillar and limited the evolution of the primary slip system, even at 10% compression.

1. 서 론
 2. 변형구배 결정소성 모델(strain gradient crystal plasticity model)
 3. 단결정 마이크로 필러 압축 거동의CP-FEM과 SGCP-FEM
 4. 모델링 결과 및 고찰
 5. 결 론
 Acknowledgements
 References

• 정재호(현진소재㈜) | Jae-Ho Jung (HYUNJIN Materials Co.)
• 조경목(부산대학교 공과대학 재료공학부) | Kyung-Mox Cho (School of Materials Science and Engineering, Pusan National University)
• 최윤석(부산대학교 공과대학 재료공학부) | Yoon Suk Choi (School of Materials Science and Engineering, Pusan National University) Corresponding author