Analysis of Local Plastic Deformation of Machined Surface

Abstract:

Technological processes of machining lead to plastically deformation of workpieces. Therefore it is needful to know influence of machining to machined material. The area of plastically deformation caused by friction of tool to machined surface was analysed. Local strain in structure was estimated by measurement of deformation of grains on metallographic cut using stereology. Local plastic deformation in deformation zone around the surface of drilled holes, local plastic deformation in deformation zone near the surface of milled workpiece and local plastic deformation near the surface of turned workpiece were investigated. The working piece was bulk from carbon steel CK45 (1.0503). Local plastic deformation was observed in case of drilling and turning, in case of milling no deformation of surface was present.

• Periodical: Defect and Diffusion Forum (Volume 368)
• Pages: 7-10
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.368.7
• Online since: July 2016
• Authors: Maroš Martinkovič*, Peter Pokorný
• Keywords: Stereology, Deformation, Machining

References

[1] S. Dolinsek, Work-hardening in the drilling of austenitic stainless steels, Journal of Material Processing Technology 63 (2003) 63 - 70.

DOI: 10.1016/s0924-0136(02)00245-5

[2] M. Martinkovic, P. Pokorny, Estimation of local plastic deformation in cutting zone during turning, Key Engineering Materials 662 (2015) 173 - 176.

DOI: 10.4028/www.scientific.net/kem.662.173

[3] M. Martinkovic, P. Pokorny, P. Bodisova, Influence of drill wear to local plastic deformation in the wall of drilling hole, Key Engineering Materials 606 (2014) 77-80.

DOI: 10.4028/www.scientific.net/kem.606.77

[4] S. A. Saltykov, Stereometric metallography, third ed., Metallurgia, Moskva, (1970).

[5] M. Martinkovic, S. Vaclav, Estimation of grain deformation of polycrystalline materials, Advanced Science, Engineering and Medicine 5 (2013) 585 - 588.