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http://dx.doi.org/10.3795/KSME-A.2003.27.7.1152

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

Lee, Su-Min (연세대학교 대학원 기계공학과)
Seo, Song-Won (연세대학교 대학원 기계공학과)
Park, Kyoung-Joon (연세대학교 대학원 기계공학과)
Min, Oak-Key (연세대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.27, no.7, 2003 , pp. 1152-1158 More about this Journal
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
SHPB; Titanium; High Temperature; Strain-rate; Constitutive Equation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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