外文翻译--冲压纯净的钛板料的可锻模性英文版.pdf

Journal of Materials Processing Technology 170 (2005) 181–186 Stamping formability of pure titanium sheets Fuh-Kuo Chen ∗, Kuan-Hua Chiu Department of Mechanical Engineering, National Taiwan University, Taipei 10764, Taiwan, ROC Received 20 October 2003; received in revised form 12 April 2005; accepted 4 May 2005 Abstract Because of hexagonal close-packed (HCP) crystal structures, commercially pure titanium (CP Ti) shows low ductility at room temperature, and requires thermal activation to increase its ductility and formability. In the present study, the formability of CP Ti sheets at various temperatures was studied by the experimental approach. Tensile tests were first conducted to investigate the mechanical behavior of CP Ti sheets at various temperatures. Forming limit tests, V-bend tests, and cup drawing tests were also performed to examine the stamping formability of CP Ti sheets at various temperatures. The experimental results indicate that CP Ti sheets could be formed into shallow components at room temperature, although the formability is limited in cold forming. In addition, the results obtained from the V-bend tests reveal that springback can be reduced at elevated forming temperatures. The experimental results obtained in the present study can be of help to the die design of stamping CP Ti sheets. © 2005 Elsevier B.V. All rights reserved. Keywords: Pure titanium sheet; Formability; Forming limit; V-bend; Springback 1. Introduction In the present study, the formability of stamping CP Ti sheets was investigated using the experimental approach. The Due to its lightweight and high specific strength, com-