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Analysis of Subsurface Microstructure and Residual Stresses in Machined Inconel 718 with PCBN and Al2O3-SiCw Tools
Division of Production and Materials Engineering, Lund university.
Division of Production and Materials Engineering, Lund university.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, The Institute of Technology.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, The Institute of Technology.
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2014 (English)In: 2ND CIRP CONFERENCE ON SURFACE INTEGRITY (CSI), Elsevier, 2014, Vol. 13, 150-155 p.Conference paper, Published paper (Refereed)
Abstract [en]

Subsurface microstructural alterations and residual stresses caused by machining significantly affect component lifetime and performance by influencing fatigue, creep, and stress corrosion cracking resistance. Assessing the surface quality of a machined part by characterizing subsurface microstructural alterations and residual stresses is essential for ensuring part performance and lifetime in aero-engines and power generators. This comparative study characterizes and analyzes subsurface microstructural alterations and residual stresses in Inconel 718 subjected to high-speed machining with PCBN and whisker-reinforced ceramic cutting tools. Effects of cutting tool materials and microgeometry on subsurface deformation, microstructural alterations, and residual stresses were investigated. Surface and subsurface regions of machined specimens were investigated using X-ray diffraction, electron channeling contrast imaging, and electron back-scatter diffraction to characterize microstructural alterations and measure deformation intensity and depth.

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 13, 150-155 p.
Series
Procedia CIRP, ISSN 2212-8271 ; 13
Keyword [en]
surface integrity, Inconel 718, residual stresses, microstructure, PCBN, ceramics
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-106779DOI: 10.1016/j.procir.2014.04.026ISI: 000360720300026OAI: oai:DiVA.org:liu-106779DiVA: diva2:718802
Conference
2nd CIRP Conference on Surface Integrity (CSI), Nottingham, UK, May 28-30, 2014
Available from: 2014-05-22 Created: 2014-05-22 Last updated: 2016-05-26Bibliographically approved

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Peng, RuChen, ZheJohansson, Sten
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