Advances in Manufacturing ›› 2023, Vol. 11 ›› Issue (2): 342-362.doi: 10.1007/s40436-021-00387-6

• ARTICLES • 上一篇    

Surface integrity of ball burnished bioresorbable magnesium alloy

G. V. Jagadeesh, Srinivasu Gangi Setti   

  1. Department of Mechanical Engineering, National Institute of Technology Raipur, Chhattisgarh, 492010, India
  • 收稿日期:2021-04-23 修回日期:2021-05-30 发布日期:2023-05-20
  • 通讯作者: Srinivasu Gangi Setti,E-mail:nivassetti@gmail.com E-mail:nivassetti@gmail.com
  • 作者简介:Mr. G. V. Jagadeesh received his B.Tech. degree from Vellore Insitute of Technology (VIT) University, Vellore, India, and M.Tech. degree from National Institute of Technology Raipur, India in 2015 and 2019 respectively. He is currently pursuing a Ph.D. in the area of biomaterials in the Mechanical Engineering Department at the National Institute of Technology, Raipur, India. His research area includes the characterization of natural fiber-reinforced composites, mechanical and tribological studies of composites, and bio-materials.
    Dr. Srinivasu Gangi Setti is working as an Assistant Professor in the Department of Mechanical Engineering at the National Institute of Technology Raipur since 2013. He has completed his M. Tech. and Ph. D. from National Institute of Technology Warangal in the years 2009 and 2013 respectively. Dr. Srinivasu Gangi Setti has joined as Assistant Professor in the Department of Mechanical Engineering, NIT Raipur in 2013. His areas of research are Tribology, Composite Materials, Functionally Graded Materials, and Additive Manufacturing. As of now, he guided 2 Ph.D., 8 PG, and 8 UG dissertations, and presently 3 Ph.D. candidates, 2 PG, and 5 UG students are working under his supervision. He has published around 70 research articles in reputed international journals and conference proceedings. He also published 6 book chapters.

Surface integrity of ball burnished bioresorbable magnesium alloy

G. V. Jagadeesh, Srinivasu Gangi Setti   

  1. Department of Mechanical Engineering, National Institute of Technology Raipur, Chhattisgarh, 492010, India
  • Received:2021-04-23 Revised:2021-05-30 Published:2023-05-20
  • Contact: Srinivasu Gangi Setti,E-mail:nivassetti@gmail.com E-mail:nivassetti@gmail.com

摘要: Magnesium alloys are potential biodegradable and biocompatible implant materials because of their excellent biological properties. Recently, interest in these alloys as a promising alternative for temporary orthopedic implants has grown owing to their desirable biological, mechanical, and physical properties. However, the application of magnesium alloys is hindered by their rapid degradation and low corrosion resistance in physiological fluids, leading to the failure of implants. Thus, the current challenge is to enhance the corrosion resistance and control the degradation rate of magnesium under physiological conditions. The rapid degradation of magnesium alloys can be controlled by improving their surface integrity, such as surface roughness and microhardness. The present study aims to improve the surface integrity of the Mg Ze41A alloy by the ball burnishing technique. The surface roughness improved by 94.90% from 0.941 μm to 0.048 μm with a burnishing force of 50 N, burnishing speed of 1 300 r/min, burnishing feed of 130 mm/min, and three passes. Similarly, the microhardness improved by 50.62% from 75.2 HV to 113.27 HV with a burnishing force of 60 N, burnishing speed of 1 100 r/min, burnishing feed of 100 mm/min, and five passes. The variations in microhardness, which were observed up to 400 μm beneath the surface, exhibited a linear nature. These variations may be attributed to the movement of dislocations, formation of new dislocations, nanocrystal structures, metastable phases and subgrains, and lattice distortion or grain refinement. The surface features obtained from optical images demonstrated the fundamental mechanisms involved in the ball burnishing process. The concept of burnishing maps and zones will assist in the design of the ball burnishing parameters of a material with an equivalent yield strength of 140 MPa. The significant improvement in the surface integrity of the Mg Ze41A alloy by the ball burnishing technique is expected to improve its functional performance.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-021-00387-6

关键词: Magnesium alloy, Bioresorbable, Orthopedic implants, Surface integrity, Ball burnishing

Abstract: Magnesium alloys are potential biodegradable and biocompatible implant materials because of their excellent biological properties. Recently, interest in these alloys as a promising alternative for temporary orthopedic implants has grown owing to their desirable biological, mechanical, and physical properties. However, the application of magnesium alloys is hindered by their rapid degradation and low corrosion resistance in physiological fluids, leading to the failure of implants. Thus, the current challenge is to enhance the corrosion resistance and control the degradation rate of magnesium under physiological conditions. The rapid degradation of magnesium alloys can be controlled by improving their surface integrity, such as surface roughness and microhardness. The present study aims to improve the surface integrity of the Mg Ze41A alloy by the ball burnishing technique. The surface roughness improved by 94.90% from 0.941 μm to 0.048 μm with a burnishing force of 50 N, burnishing speed of 1 300 r/min, burnishing feed of 130 mm/min, and three passes. Similarly, the microhardness improved by 50.62% from 75.2 HV to 113.27 HV with a burnishing force of 60 N, burnishing speed of 1 100 r/min, burnishing feed of 100 mm/min, and five passes. The variations in microhardness, which were observed up to 400 μm beneath the surface, exhibited a linear nature. These variations may be attributed to the movement of dislocations, formation of new dislocations, nanocrystal structures, metastable phases and subgrains, and lattice distortion or grain refinement. The surface features obtained from optical images demonstrated the fundamental mechanisms involved in the ball burnishing process. The concept of burnishing maps and zones will assist in the design of the ball burnishing parameters of a material with an equivalent yield strength of 140 MPa. The significant improvement in the surface integrity of the Mg Ze41A alloy by the ball burnishing technique is expected to improve its functional performance.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-021-00387-6

Key words: Magnesium alloy, Bioresorbable, Orthopedic implants, Surface integrity, Ball burnishing