ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The reliability of a mechanical component depends to a large extent on the physical stateof its surface layers. This state includes the distribution of residual stresses induced by machining.Residual stresses in the machined surface and subsurface are affected by the cutting tool, workmaterial, contact conditions on the interfaces, cutting regime parameters (cutting speed, feed anddepth of cut), but also depends on the cutting procedure. In this paper, the effects of cuttingsequence on the residual stress distribution in the machined surface of AISI 316L steel areexperimentally and numerically investigated. In the former case, the X-ray diffraction technique isapplied, while in the latter an elastic-viscoplastic FEM formulation is implemented. The resultsshow that sequential cut tends to increase superficial residual stresses. A greater variation in residualstresses is observed between the first and the second cut. Moreover, an increase in the thickness ofthe tensile layer is also observed with the number of cuts, this difference also being greater betweenthe first and the second cut. Based on these results, the residual stress distribution on the affectedmachined layers can be controlled by optimizing the cutting sequence
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.524-525.179.pdf
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