층상조직 Ti-6Al-4V 합금의 고온 변형 거동에 대한 연구
= High-Temperature Deformation Behavior of Ti-6Al-4V Alloy with a Transformed Microstructure
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초록
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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)
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목차
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Abstract
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1. 서론
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2. 비탄성 변형이론
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3. 실험방법
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4. 실험결과
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5. 고찰
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6. 결론
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후기
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REFERENCES
한국학술정보
