Analysis of Residual Stress State in Deep-Rolled HT-Bolts
J. Unglaub, J. Hensel, R. Wimpory, T. Nitschke-Pagel, K. Dilger, K. Thieledownload PDF
Abstract. Results of residual stress measurements of HT-bolts gained by neutron diffraction at HZB will be presented. The in-depth residual stress of different conditions of “rolled-before heat-treatment and galvanized” M24 HT-bolts made from 33MnCrB5-2 will be shown: As-manufactured, pre-stressed and fatigue loaded. Additionally, results of an unloaded, “rolled-after heat-treatment and hot-dipped” galvanized M36 HT-bolt will be presented. It will be shown that the manufacturing sequence “rolled-before heat-treatment and galvanized” can develop compressive residual stresses due to heat-treatment close to the surface and that “rolled-after heat-treatment and hot-dipped” shows a contraire residual stress path as “rolled-before heat-treatment and galvanized” with a maximum below the surface.
HT-Bolts, Deep Rolling, Residual Stress Measurement, Neutron Diffraction
Published online 9/11/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: J. Unglaub, J. Hensel, R. Wimpory, T. Nitschke-Pagel, K. Dilger, K. Thiele, ‘Analysis of Residual Stress State in Deep-Rolled HT-Bolts’, Materials Research Proceedings, Vol. 6, pp 209-214, 2018
The article was published as article 33 of the book Residual Stresses 2018
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