Transactions of Materials and Heat Treatment

Title：Study of high temperature plasticity of TiNiNb alloy based on processing plan

Authors： YANG Gen-lin LI Fu-guo ZHAO Wei WANG Er-min HAN Jin NI Zhi-ming

Unit： Beijing Institute of Aeronautical Materials Northwestern Polytechnical University

KeyWords： TiNiNb alloy constitutive equation deformation feature processing map

ClassificationCode：TG306

year,vol(issue):pagenumber：2010,35(3):139-143

Abstract：

Hot deformation characteristics of as-cast TiNiNb alloy was studied by hot compression simulation tests under the strain rate range of 0.01-0.1 s-1 and the temperature of 700-1000 ℃. Based on the experiment data, hot deformation constitutive equation of as-cast TiNiNb was established. The processing plans were calculated and analyzed according to the dynamic materials model. The instability zones of flow behavior could be recognized by the plans. The optimum processing parameters of hot deformation in the range of this experiment could also be attained by the plans, in which the hot temperature was 750-880 ℃ and the strain rate was 0.310 s-1 or the hot temperature was 880-950 ℃ and the strain rate was 0.01-0.5 s-1.

Funds：

“十一五”装备预先研究项目（51318040105）

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