The Influence of Burnishing Parameters on the Surface Quality of Bars Made from AZ61 Magnesium Alloy

Abstract:

In the machining of the magnesium and magnesium alloys, some difficulties are encountered during working process. Thus, in the case of turning operation, when phenomena like: splinter self-ignition and flank built-up occur during machining, special tools and coolants are required in order to diminish the effects of such phenomena. In the case of grinding operation of the magnesium and its alloys, other phenomena like: adhesion between the abrasive tools and processing materials can cause explosions and hence such operation must be conducted in special conditions. A solution that can be applied to avoid such phenomena and effects is represented by the utilization of the burnishing operation. In the present study, the influence of the burnishing process on the quality of the machined surfaces of parts made from AZ61 magnesium alloy was performed. The quality of the burnished surfaces was analyzed in terms of the roughness and hardness parameters, the parameters with the greatest influence on surfaces roughness and hardness being the burnishing feed, burnishing speed and burnishing pressure

• Periodical: Advanced Materials Research (Volume 837)
• Pages: 135-140
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.837.135
• Online since: November 2013
• Authors: Gheorghe Mustea, Gheorghe Brabie
• Keywords: Burnishing, Machining, Magnesium Alloy, Surface Hardness, Surface Roughness (SR)

References

[1] Witte F. The history of biodegradable magnesium implants: A review. Acta Biomater, 6: 1680-92, (2010).

[2] Denkena B, Lucas A. Biocompatible Magnesium Alloys as Absorbable Implant Materials – Adjusted Surface and Subsurface Properties by Machining Processes. CIRP Annals - Manufacturing Technology, 56: 113-6, (2007).

DOI: 10.1016/j.cirp.2007.05.029

[3] N. H. Loh and S. C. Tam, Effects of ball burnishing parameters on surface finish – a literature survey and discussion, Precision Engineering, 10, p.215–220, (1988).

DOI: 10.1016/0141-6359(88)90056-6

[4] Prevey, P.S., Ravindranath, R.A., Shepard, M., Gabb, T. Case studies of fatigue life improvement using low plasticity burnishing in gas turbine engine applications. J. Eng. Gas Turbines & Power; 128: 865-872, (2006).

DOI: 10.1115/1.1807414

[5] Denkena, B., Meyer, R., Breidenstein, B., Development of combined manufacturing technologies for high-strength structure components. Adv. Mater. Res. 22, 67–75, (2007).

DOI: 10.4028/www.scientific.net/amr.22.67

[6] Schuh, A., Zeller, C., Holzwarth, U., Kachler, W., Wilcke, G., Zeiler, G., Eigenmann, B., Bigoney, J., Deep rolling of titanium rods for application in modular total hip arthroplasty, (2006).

DOI: 10.1002/jbm.b.30669

[7] Seemikeri, C.Y., Brahmankar, P.K., Mahagaonkar, S.B., Investigations on surface integrity of AISI 1045 using LPB tool, Tribol. Int. 41, 724–734, (2008).

DOI: 10.1016/j.triboint.2008.01.003

[8] Prevey, P., McNulty, D., Carr, J., Sade, P., Craft, A., Fatigue strength enhancement of Ti–6Al–4V ELI femoral distal stems using low plasticity burnishing. In: Proc. of ASM Materials & Processes for Medical Devices Conf. and Expo., Minneapolis, (2009).

DOI: 10.1520/stp45238s