Influence of Work-Hardening on Wear Resistance of Machined Surface of Aviation Aluminum Alloy

Abstract:

Work-hardening of machined surface plays an important role in the evaluation of surface quality and performance of wear resistance in the process of machining components. In this study work-hardening of machined surface during milling 7050-T7451 aluminum alloy is investigated using micro-hardness experiments under different cutting conditions. Moreover, the wear resistance of machined surface including wear quantity and friction coefficient are obtained and studied by means of high speed ring-block friction-wear tester. The work-hardening and wear resistance are particularly sensitive to cutting speed. Friction coefficient has marked drop trends and the tendency of wear quantity is ascend in first and descend at last as work-hardening increases. The comparison of wear resistance under different cutting conditions shows that the wear resistance of machined surface can be directly affected by work-hardening and machined surface obtained by high speed milling with higher micro-hardness have more superior in wear resistance performance.

• Periodical: Key Engineering Materials (Volumes 589-590)
• Pages: 117-121
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.589-590.117
• Online since: October 2013
• Authors: Xiu Li Fu, Zeng Hui An, Yang Qiao, Xiu Hua Men
• Keywords: Friction Coefficient (FC), Microhardness, Wear Resistance, Work-Hardening

References

[1] N. Yu. Zolotorevsky, A.N. Solonin, etc.: Materials Science and Engineering. Vol. 512 (2009), p.111.

[2] M. Xin, L.J. Jie and X. B. Wang: Transactions of Beijing Institute of Technology. Vol. 30 (2) (2010), p.154.

[3] Y.K. Gao: Materials Science and Engineering A. Vol. 528 (2011), p.3823.

[4] Shahzad, Majid, Chaussumier, Michel, etc.: Materials and Design. Vol. 32 (2011), p.3328.

[5] R. ROUMINA and C.W. SINCLAIR: Metallurgical and Materials Transactions. Vol. 42A (2011), p.473.

[6] S.Y. Wang: Research on surface quality in high-speed milling. (PH. D Shandong University, 2006)(In Chinese).

[7] J. Luo, M.Q. Li and B. Wu: Materials Science and Engineering A. Vol. 530 (2011): p.559.

[8] G. Boczkal, B. Mikulowski C. -G. Oertel and W. Skrotzki: Crystal Research and Technology. Vol. 45 (2010), p.111.

[9] Ida Westermann, Odd Sture Hopperstad, etc.: Journal of Materials Science. Vol. 45(2010), p.5323.