High temperature compression properties of open-cell Ni–20Cr foams produced by impregnation》.pdf

Materials and Design 85 (2015) 47–53 Contents lists available at ScienceDirect Materials and Design journal homepage: www. /locate/jmad High temperature compression properties of open-cell Ni–20Cr foams produced by impregnation Lijun Xiao a, Weidong Song a,⁎, Huiping Tang b, Zhiwu Zhu c, Jianzhong Wang b, Hui Wang d a State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China b State Key Laboratory of Porous Metal Materials, Northwest Institute for Non-ferrous Metal Research, Xian 710016, China c Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China d Xian Sailong Metal Materials Co., Ltd, Xian 710016, China a r t i c l e i n f o a b s t r a c t Article history: The mechanical properties of open-cell Ni–20Cr foams were studied by uniaxial compression tests, which were Received 16 March 2015 performed at a strain rate of 10−3 s−1 at ambient temperature, 250 °C, 400 °C and 550 °C respectively. Then, Received in revised form 26 June 2015 the effect of temperature on the mechanical properties of these foams was analyzed. It was found that both Accepted 28 June 2015 the compressive strength and energy absorbed by Ni–20Cr foam at elevated temperatures became lower than Available online 3 July 2015 those at room temperature. The compressive strength changed with temperatures in a form of pa