Dynamic Response and Numerical Simulation of Al-Sc and Al-Ti Alloy Under High-speed Impact

摘要：

　　Al-Sc and Al-Ti semi-infinite targets were impacted by high-speed projectiles with velocities of 0.8, 1.0, 1.2 andl.5km/s, respectively.It is found that the Al-Sc targets per form more excellent ability to resist high-speed im pact.It is conduded that different microstructures of Al-Sc and Al-Ti alloys, including different grain sizes and secondary partides precipitated in the matrix, result in their having greatly different capabilities of resisting impact.Furthermore, the effect of the size of Al3Sc particles in Al-Sc alloy on the resistance of high-speed impact was investiga ted.In addition, computer simulations and valida tion of these simulations were developed which fairly accurately represented residual crater shapes/geom etries.Validated computer simulations allowed rep resentative extrapolations of impact craters well be yond the laboratory where melting and solidification occurred at the crater wall, especially for hyperve locity impact (> 5 kin/s).

关键词： Al-Sc alloy Al-Ti alloy Al3Sc particles High-speed impact numerical simulation

作者: Peijie Li Weigui Zhang Yicong Ye Liangju He Xue Feng L.S.Novikov

作者单位: National Center of Novel Materials for International Research,Tsinghua University,Beijing 100084,Chi College of Aerospace and Materials Engineering,National University of Defense Technology,Changsha 41 School of Aerospace,Tsinghua University,Beijing 100084,China Skobeltsyn Institute of Nuclear Physics,Moscow State University,Moscow 119992,Russia

会议类型: 国际会议

会议名称: The 12th China-Russia Symposium on Advanced Materials and Technologies(第十二届中俄双边新材料新工艺国际会议)

会议地点: 昆明

会议语种:英文

页码: 57-63

在线出版日期: 2013-11-19（万方平台首次上网日期，不代表论文的发表时间）