Research on Temperature Change and Microstructure Evolution of Bore in Steel Target Penetrated by Copper Jets

Abstract:

Copper fragments are found to adhere on penetration channel wall after copper jets penetrate steel target, and the research on it is helpful to know microstructure evolution of jets in the process of penetration and cooling time. This paper is based on the observation of bore in steel target penetrated by copper jets, and uses numerical simulation to study the process of copper jets penetration, then the change of temperature and grain size of jets adhered on penetration channel wall can be gotten, and the results agree with the observation of penetration channel wall taken by SEM. From the observations of copper and steel, we can get the conclusion that copper jets are not melted but have dynamic recrystallization in the process of penetration, then copper grain size increases obviously in cooling time, and twins are formed at the same time.

• Periodical: Materials Science Forum (Volumes 667-669)
• Pages: 641-646
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.667-669.641
• Online since: December 2010
• Authors: Hao Chen, Gang Tao
• Keywords: Dynamic Recrystallization (DRX), Jet, Penetration, Twin

References

[1] F. Jamet: The 8th international symposium on ballistics. Florida, USA. (1984), p. V1.

[2] L. E. Murr, E. A. Trillo, S. Pappu, et al.: Journal of Materials Science. Vol. 37 (2002), p.3337.

[3] M.A. Meyers，L. W. Meyer, K.S. Vecchio, et al.: Shock wave and High Strain-rate phenomena in materials. HongKong. (1991), p.529.

[4] M.A. Meyers, Y.B. Xu, Q. Xue, et al.: Acta Materialia. Vol. 51 (2003), p.1307.

[5] Chen Hao. Mater Dissertation Research Paper. Nanjing University of Science and Technology. (2007).

[6] W. G. Von Holle , J. J. Trimble. Journal of Applied Physics. Vol. 47 (1976), p.2391.

[7] Z. Duan, M. Cong, H. Su, et al.: Chinese Journal of Materials Research. Vol. 15(2001), p.403.

[8] Y.C. Bu, D.H. Lassila, M.S. Schneider et al.: Material Science and Engineering A. Vol. 409(2005), p.270.

[9] S. Yang, W. Tao: Theory of Heat Transfer, edit by Higher Education Publication, Beijing(2006), in press.

[10] M.A. Meyers: Dynamic Behavior of Materials, edit by National Defense Industry Publications, Beijing(2006), in press.

[11] M. A. Meyers, U. R. Andrade, A. H. Chokshi. Metallurgical and Materials Transactions A. Vol. 26(1995), p.2881.

[12] M.A. Meyers, V.F. Nesterenko, J.C. LaSalvia, et al.: Materials Science and Engineering A. Vol. 317(2001), p.204.

[13] D. Mo, G. He, Z. Hu, et al.: Transactions of the China Welding Institution. Vol. 29(2008), p.29.

[14] Q. Zheng: Advance Laser Fabrication, edit by HuaZhong University of Science and Technology Publications, Wuhan, HuBei(2002) , in press.

[15] L.E. Murr. Acta Metallurgica. Vol. 45(1997), p.157.