자동차부품 소재개발을 위한 티타늄 합금의 0.3Tm 크리프 거동 = 0.3Tm Creep Behaviour of Titanium Alloy for Automotive Parts

다국어 초록 (Multilingual Abstract)

Titanium alloy has widely been used as automotive part material because it has high specific strength and also is light, harmless to human body. But, we have little design data about the creep behaviors of the alloy. Therefore, in this study, every creep test under four constant stress conditions have been conducted for four temperature conditions around 0.3Tm. A series of creep tests had been performed to get the basic design data and life prediction of titanium products and we have gotten the following results. First, the stress exponents decreased as the quenching temperatures increase. Secondly, the creep activation energy gradually decreased as the stresses become bigger. Thirdly, the constant of Larson-Miller parameters on this alloy was estimated about 2.0. And last, the fractographs at the creep rupture showed the ductile fracture due to the intergranullar rupture and a few dimples.

목차 (Table of Contents)

• Abstract
  
• 1.서론
  
• 2.크리프 이론
  
• 3.실험 및 연구방법
  
• 4.실험결과 및 고찰
  
• 5.결론
  
• References