Flow Behavior of Commercial Pure Titanium Considering Interstitial Elements
This study aimed to develop a unified constitutive model which can predict the flow responses of commercially pure titanium having different equivalent oxygen concentrations (Oeq=O + 0. 75C + 2N). The model was based on previously a developed mechanical threshold stress (MTS) model and was further advanced to capture the effects of interstitial elements (C,N and O) and grain size on thermal and athermal stress components: the increment of interstitial solute increased thermal stress while that of grain size decreased athermal stress. The results showed that the unified model matches well with experimental results over the commercial ranges of Oeq(1840~4700 ppm) and temperature (135~773 K) without any change in the material constants.
Constitutive model titanium (Ti) flow stress grain size interstitial element
Jong Woo Won Chan Hee Park Dong Geun Lee Yong Tae Lee Chong Soo Lee
Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang Korea Institute of Materials Science ,Changwon 641-831 ,Republic of Korea
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
1011-1015
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）