TY - JOUR
T1 - Anisotropy of dynamic compressive properties of textured polycrystal sheet of hot rolled TB2 titanium alloy
AU - Chen, Zhiyong
AU - Cai, Hongnian
AU - Wang, Fuchi
AU - Tan, Chengwen
AU - Hu, Shaohua
AU - Jing, Fangcheng
PY - 2010/12
Y1 - 2010/12
N2 - The quasistatic and dynamic compressive mechanical properties of textured polycrystal sheet of hot rolled TB2-titanium alloy were investigated by Instron apparatus and Split-Hopkinson pressure bar (SHPB) technology, respectively. Cylindrical specimens of textured titanium alloy sheet, which were cut with the cylinder axis along the rolling direction (RD), transverse direction (TD) and 45? direction (RD-45°) from the rolling direction lying in the rolling plane, were compressed at strain rates in the range of 10-3 to 103 s-1. The compressive stress-strain curves show that the flow stresses for different directions of hot rolled TB2-titanium alloy sheet increase with increase of the strain rate and the obvious effect of strain rate hardening is observed. Both the quasistatic and dynamical compressive mechanical properties exhibit anisotropy. Furthermore, the behavior for quasistatic compression is different from that for dynamical compression. Taking into account of possible mechanisms for quasistatic and dynamic plastic deformation, the mechanical anisotropy of textured polycrystal titanium alloy sheets was discussed based on the microscope crystal plasticity deformation theory.
AB - The quasistatic and dynamic compressive mechanical properties of textured polycrystal sheet of hot rolled TB2-titanium alloy were investigated by Instron apparatus and Split-Hopkinson pressure bar (SHPB) technology, respectively. Cylindrical specimens of textured titanium alloy sheet, which were cut with the cylinder axis along the rolling direction (RD), transverse direction (TD) and 45? direction (RD-45°) from the rolling direction lying in the rolling plane, were compressed at strain rates in the range of 10-3 to 103 s-1. The compressive stress-strain curves show that the flow stresses for different directions of hot rolled TB2-titanium alloy sheet increase with increase of the strain rate and the obvious effect of strain rate hardening is observed. Both the quasistatic and dynamical compressive mechanical properties exhibit anisotropy. Furthermore, the behavior for quasistatic compression is different from that for dynamical compression. Taking into account of possible mechanisms for quasistatic and dynamic plastic deformation, the mechanical anisotropy of textured polycrystal titanium alloy sheets was discussed based on the microscope crystal plasticity deformation theory.
KW - Anisotropy
KW - Dynamic compressive mechanical properties
KW - TB2 titanium alloys
KW - Textured polycrystal sheet
UR - http://www.scopus.com/inward/record.url?scp=79952059122&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:79952059122
SN - 1002-185X
VL - 39
SP - 2101
EP - 2106
JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
IS - 12
ER -