한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제4권1호
  • /
  • Pages.198-207
  • /
  • 1996
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

Ti-6A1-4V 합금의 피로거동에 미치는 온도, 주파수 및 미세조직의 영향

The Effect of Temperature, Frequency and Microstructure on Fatigue Crack Propagation in Ti-6A1-4V Alloy

  • 김현철 (두원 공업전문대학 기계공학과) ;
  • 김승한 (현대 중공업 중앙연구소) ;
  • 임병수 (성균관대학교 기계설계학과) ;
  • 김두현 (한국기계 연구원 고온재료실) ;
  • 이용태 (한국기계 연구원 고온재료실)
  • 발행 : 1996.01.01
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초록

The effect of temperature, frequency and microstructure on fatigue crack propagation property of Ti-6A1-4V alloy has been investigated. The temperatures employed were room temperature, 20$0^{\circ}C$ and 40$0^{\circ}C$. The frequencies were 20Hz and 8 Hz. The microstructures tested were equiaxed and bimodal microstructures. Mechanical properties and fatigue crack growth rates were measured in different test conditions. From the experimental results, following conclusions were obtained. Bimodal microstructure showed superior fatigue crack growth resistance to equiaxed microstructure. Under all test conditions, fatigue crack growth rate increased with test temperature. Wine the frequency decreasing from 20Hz to 8Hz, fatigue crack growth rate increased.

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참고문헌

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