층상조직 Ti-6Al-4V 합금의 고온 변형 거동에 대한 연구 = High-Temperature Deformation Behavior of Ti-6Al-4V Alloy with a Transformed Microstructure

다국어 초록 (Multilingual Abstract)

The high temperature deformation mechanisms of Ti-6A1-4V with a transformed microstructure were investigated in the context of inelastic-deformation theory. For this purpose, load-relaxation tests were conducted on samples with a lamellar structure containing different alpha-platelet thicknesses at temperatures of 715℃ - 900℃. The flow stress-versus-strain rate curves for all the microstructures were well fit with an inelastic-deformation equation describing grain-matrix deformation (dislocation glide+dislocation climb). However, for heavily pre-deformed specimens, grain-boundary sliding (CBS) as well as grain-matrix deformation was observed to occur. The GBS rate was found to be most rapid for the microstructure with the thinnest alpha laths/platelets.
(Received May 31, 2004)

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 비탄성 변형이론
• 3. 실험방법
• 4. 실험결과
• 5. 고찰
• 6. 결론
• 후기
• REFERENCES