Influence of Predeformation on Mechanical Behavior of Hastelloy C-276

Abstract:

The accurate prediction of springback is a subject of major concern during the sheet metal forming. In this study, the recovery behavior of Hastelloy C-276 sheet under different amounts of pre-strain has been investigated by uniaxial cyclic tensile tests. The total springback during unloading could be separated into a linear springback and a nonlinear springback. The percentage of nonlinear recovery to the total recovery increased as the pre-strain increased. Both unloading and reloading elastic moduli decreased as the pre-strain increased, which affected the springback phenomenon significantly. Nonlinear recovery could be explained by the movement of dislocations in the reverse direction. The decrease of unloading elastic modulus is mainly related with the dislocation motion and the mobile dislocation density.

• Periodical: Advanced Materials Research (Volume 1095)
• Pages: 442-446
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1095.442
• Online since: March 2015
• Authors: Ce Feng*, De Fu Li, Sheng Li Guo, Xiang Ai Liu, Sheng Pu Liu
• Keywords: Cyclic Tension, Dislocation Motion, Elastic Modulus, Nonlinear Springback

References

[1] Jinxi Liu, Yanling Lu, Xiaoke Li, Zhijun Li, Xingtai Zhou and Jixiang Zhang: Journal of Plasticity Engineering Vol. 19 (2012), p.11. (in Chinese).

[2] J.R. Davis: ASM Specialty Handbook: Nickel, Cobalt, and Their alloys (ASM International Handbook Committee, USA 2000).

[3] J.F. Radavich: JOM Vol. 40 (1988), p.35.

[4] F. Morestin, M. Boivin, and C. Silva: J. Mater. Process. Technol. Vol. 56 (1996), p.619.

[5] Guodong Fan: Research on Damping and Microplastic Behavior of Pure Mg and Mg alloys (Ph.D., Harbin Institute of Technology, China 2013), p.1. (in Chinese).

[6] Ping Hu, Jianshe Lian and Yunxing Li: Acta Mechanica Solida, Vol. 26 (1994), p.275. (in Chinese).

[7] F. Morestin, M. Boivin and C. Silva: J. Mater. Process. Technol. Vol. 56 (1996), p.619.

[8] J. Min, J. Lin: Mater. Sci. Eng. A Vol. 561 (2013), p.174.

[9] H. Kim, C. Lin: Mater. Sci. Eng. A Vol. 562 (2013), p.161.

[10] G.E. Mann, T. Sumitomo and C.H. Cáceres: Mater. Sci. Eng. A Vol. 456 (2007), p.138.

[11] C.H. Caceres, T. Sumitomo and M. Veidt: Acta Mater. Vol. 51 (2003), p.6211.

[12] R.M. Cleveland, A.K. Ghosh: Int. J. Plast. Vol. 18 (2002), p.769.

[13] N.F. Mott: Philos. Mag Vol 43 (1952), p.1151.

[14] A. Granato, K. Lücke: J. Appl. Phys. Vol 27 (1956), p.583.

[15] M. Yang, Y. Akiyama and T. Sasaki: J. Mater. Process. Technol. Vol. 151 (2004), p.232.

[16] K. Kamiya, S. Murakami and J. Soc: Mater. Sci. Vol. 45 (1996), p.667.