中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 11 No. 3 June 2001 |
Mechanical properties and deformation behavior of
Ti-5Al-2.5ZrELI alloy used at cryogenic temperature
Ti-5Al-2.5ZrELI alloy used at cryogenic temperature
LIU Ya-xiu(劉雅秀), QIAN Dong-fan(千東范),
GAO Bao-dong(高寶東), WANG Jiang-bo(王江波),
WANG Xiao-hua(王曉華), FENG Zhao-wei(馮昭偉)
GAO Bao-dong(高寶東), WANG Jiang-bo(王江波),
WANG Xiao-hua(王曉華), FENG Zhao-wei(馮昭偉)
（General Research Institute for Nonferrous Metals of Beijing，
Beijing 100088， P.R.China）
Abstract: The mechanical properties and deformation behavior of Ti-5Al-2.5 ZrELI alloy compared with Ti-5Al-2.5 SnELI at 4.2?K, 20 K and 293 K were investigated. The results show that the new titanium alloy Ti-5Al-2.5ZrELI has more consistent properties because of its uniform microstructure and less segregation. It has good elongation and ductility. The fracture surfaces are covered with elongated dimples at cryogenic temperatures. The deformation mode at 293 K, 20 K and 4.2 K are twinning and slipping.
Key words: Ti-5Al-2.5ZrELI； cryogenic temperature； microstructure； deformation behavior
