Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Temperature Dependence of Dynamic Behavior of Commercially Pure Titanium by the Compression Test

CP-Ti의 동적거동에 미치는 온도의 영향

  • 이수민 (연세대학교 대학원 기계공학과) ;
  • 서송원 (연세대학교 대학원 기계공학과) ;
  • 박경준 (연세대학교 대학원 기계공학과) ;
  • 민옥기 (연세대학교 기계공학부)
  • Published : 2003.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

The mechanical behavior of a commercially pure titanium (CP-Ti) is investigated at high temperature Split Hopkinson Pressure Bar (SHPB) compression test with high strain-rate. Tests are performed over a temperature range from room temperature to 1000$^{\circ}C$ with interval of 200$^{\circ}C$ and a strain-rate range of 1900 ∼ 2000/sec. The true flow stress-true strain relations depending on temperature are achieved in these tests. For construction of constitutive equation from the true flow stress-true strain relation, parameters for the Johnson-Cook constitutive equation is determined. And the modified Johnson-Cook equation is used for investigation of behavior of flow stress in vicinity of recrystalization temperature. The Modified Johnson-Cook constitutive equation is more suitable in expressing the dynamic behavior of a CP-Ti at high temperature, i.e. about recrystalization temperature.

Keywords

References

  1. Kolsky, H., 1949, 'An Investigation of the Mechanical Properties of Materials very High Rates of Loading,' Proc. Phys. Soc. (London), B63, pp. 676-700 https://doi.org/10.1088/0370-1301/62/11/302
  2. Meyers, M.A. and Ravichandran, G., 'Short Course in Dynamic Behavior of Materials,' Center of Exellence for Advanced Materials, University of California, San Diego, March 6-10, 1989
  3. Macdougall, D., 'A Radiant Heating Method for Performing High Temperature, High-Strain-Rate Tests,' Meas. Sci. Technol., 9, pp. 1657-1662, 1998 https://doi.org/10.1088/0957-0233/9/10/003
  4. Johnson, G.R., Cook, W.H., 'A Constitutive Model and Data for Metals Subjected to Large Strains, High Strain Rates and High Temperatures,' in Pro. 7th IntI. Sym. on Ballistics, The Hague, Netherlands, 541, 1983
  5. Andrade, U.K, Meyers, M.A., Chokshi, A.H., 'Constitutive Description of Work and Shock-hardened Copper,' Scripta Met. Mat., Vol. 30, No. 7, pp. 933-938, 1994 https://doi.org/10.1016/0956-716X(94)90418-9
  6. Seo Songwon, Min Oakkey, 1998, 'Size Effects of Aluminum Compression Specimen in SHPB Test,' Proc. of the KSME 1998 Spring Annual Meeting A, pp. 339-343
  7. Lim Jaeyoung, Min Oakkey, Lee Jeongmin, 1999, 'Shear Behaviors at High-strain and High-Strain-rate of Tough-pitch Cooper,' Proc. of the KSME 1999 Fall Annual Meeting A, pp. 395-400
  8. Yang Hyunmo and Min Oakkey, 'The True Strss Strain Relation of Aluminum Alloysin the SHPB Tension Test,' Transactions of the KSME, A, Vol. 24, No. 8, pp. 1917-1922, 2000
  9. Yang Hyunmo, Min Oakkey, Park Kyoungjoon, 'Temperature Dependence of Dynamic Behavior of Titanium by High Strain-rate Compression Test,' Proc. Of 4th Int. Symp. On Impact Engineering, Vol. 2, 571-576, 2001
  10. Moon Wonjoo, Seo Songwon, Lim Jaeyoung, Min Oakkey, 'Dynamic Shear Stress of Tough-pitch Copper at High Strain and High Strain-rate,' KSME inter.J., Vol. 16, pp. 1412-1419, 2002
  11. ASTM B-348-00 Certificate of Conformance, TIMET, 2002
  12. M. A. Meyer, 'Dynamic Behavior of Materials,' Willey-Interscience, John Willey & sons, inc. New York, 1994

Cited by

  1. Characterization of Dynamic Deformation Behavior of Al 7075-T6 at High Temperature by Using SHPB Technique vol.34, pp.8, 2010, https://doi.org/10.3795/KSME-A.2010.34.8.981