Next Article in Journal
Applications of Microbeams Produced by Tapered Glass Capillary Optics
Next Article in Special Issue
Double-Exposure Method with Synchrotron White X-ray for Stress Evaluation of Coarse-Grain Materials
Previous Article in Journal
Recent Progress in Charged Polymer Chains Grafted by Radiation-Induced Graft Polymerization; Adsorption of Proteins and Immobilization of Inorganic Precipitates
Previous Article in Special Issue
Residual Stress Distribution in Water Jet Peened Type 304 Stainless Steel
Article

Residual Stresses Induced by Surface Working and Their Improvement by Emery Paper Polishing

Hitachi, Ltd., 1-1, Saiwai-cho, 3-chome, Hitachi, Ibaraki 317-0017, Japan
Now at AIDA ENGINEERING, LTD.
Quantum Beam Sci. 2020, 4(2), 21; https://0-doi-org.brum.beds.ac.uk/10.3390/qubs4020021
Received: 9 April 2020 / Revised: 12 May 2020 / Accepted: 12 May 2020 / Published: 14 May 2020
(This article belongs to the Special Issue Analysis of Strain, Stress and Texture with Quantum Beams)
In many of machine parts and structural components, materials surface would be worked. In this study, residual stresses on the surfaces were measured by X-ray diffraction method, and effects of surface working on the residual stresses were examined. In case of lathe machining of type 304 stainless steel bar, the residual stresses in circumferential directions are tensile, and those in axial directions are almost compressive. Highly tensile residual stresses in the circumferential directions were improved by emery paper polishing. 10 to 20 times of polishing changes high tensile residual stresses to compressive residual stresses. In the case of shot peening on a type 304 stainless steel plate, the compressive residual stress inside is several hundred MPa lower than that on the surface. By applying the emery paper polishing to the shot peened surface 10 or 20 times, the residual stress on the surface is improved to −700 MPa. While fatigue strength at 288 °C in the air of the shot peened material is 30 MPa higher than solution heat treated and electro-polished material, the fatigue strength of the shot peened and followed by emery paper polished material is 60 MPa higher. Thus, the emery paper polishing is simple and a very effective process for improvement of the residual stresses. View Full-Text
Keywords: residual stress; X-ray diffraction; lathe machining; shot peening; emery paper polishing; austenitic stainless steel; fatigue strength residual stress; X-ray diffraction; lathe machining; shot peening; emery paper polishing; austenitic stainless steel; fatigue strength
Show Figures

Graphical abstract

MDPI and ACS Style

Hayashi, M. Residual Stresses Induced by Surface Working and Their Improvement by Emery Paper Polishing. Quantum Beam Sci. 2020, 4, 21. https://0-doi-org.brum.beds.ac.uk/10.3390/qubs4020021

AMA Style

Hayashi M. Residual Stresses Induced by Surface Working and Their Improvement by Emery Paper Polishing. Quantum Beam Science. 2020; 4(2):21. https://0-doi-org.brum.beds.ac.uk/10.3390/qubs4020021

Chicago/Turabian Style

Hayashi, Makoto. 2020. "Residual Stresses Induced by Surface Working and Their Improvement by Emery Paper Polishing" Quantum Beam Science 4, no. 2: 21. https://0-doi-org.brum.beds.ac.uk/10.3390/qubs4020021

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop