liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Plastic Deformation and Residual Stress in High Speed Turning of AD730™ Nickel-based Superalloy with PCBN and WC Tools
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, Faculty of Science & Engineering.
Division of Production and Materials Engineering,Lunds University, Sweden.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, Faculty of Science & Engineering.
Seco Tools AB, Fagersta, Sweden.
Show others and affiliations
2018 (English)In: Procedia CIRP 71 (2018) pp 440-445, Elsevier, 2018, Vol. 71, p. 440-445Conference paper, Published paper (Refereed)
Abstract [en]

A higher gas turbine efficiency can be achieved by increasing the operating temperature in hot sections. AD730™ is a recently-developed wrought/cast nickel-based superalloy which can maintain excellent mechanical properties above 700 ℃. However, machining of AD730™ could be a difficult task like other nickel-based superalloys. Therefore, studies are needed with respect to the machinability of this new alloy.

In this paper, high-speed turning was performed on AD730™ using polycrystalline cubic boron nitride (PCBN) tools and coated tungsten carbide (WC) tools at varied cutting speeds. The surface integrity was assessed in two important aspects, i.e., surface and sub-surface plastic deformation and residual stresses. The PCBN tools generally showed better performance compared with the WC tools since it led to reduced machining time without largely compromising the surface integrity achieved. The optimal cutting speed was identified in the range of 200-250 m/min when using the PCBN tools, which gives rise to a good combination of machining efficiency and surface integrity. The further increase of the cutting speed to 300 m/min resulted in severe and deep plastic deformation. Meanwhile, a continuous white layer was formed at the machined surface. When turning with the WC tools, the increased cutting speed from 80 m/min to 100 m/min showed very little effect with respect to the plastic deformation on the machined surface. It was found that tensile residual stresses were developed on all machined surfaces no matter when the PCBN or WC tools were used, and the surface tension was generally increased with increasing cutting speed. The tensile layer might need to be modified by e.g., post-machining surface treatments such as shot peening, if taking good fatigue performance into consideration.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 71, p. 440-445
Keywords [en]
plastic deformation, residual stress, nickel-based superalloy, AD730TM, high-speed turning
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:liu:diva-148484DOI: 10.1016/j.procir.2018.05.051OAI: oai:DiVA.org:liu-148484DiVA, id: diva2:1216679
Conference
The 4th CIRP Conference on Surface Integrity, 11th-13th July, Tianjin, China
Available from: 2018-06-12 Created: 2018-06-12 Last updated: 2018-07-03

Open Access in DiVA

fulltext(1193 kB)168 downloads
File information
File name FULLTEXT01.pdfFile size 1193 kBChecksum SHA-512
dcd8d33df12077a7456954ed8e5d802e5c041e904c8c21b24da11b406938a8f40d1fda02dbba2c4084493a2f12c3dd95f02a32a11c0b17492b0a83fed2d40d56
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Authority records BETA

Chen, ZhePeng, Ru LinGustafsson, DavidPalmert, FransMoverare, Johan

Search in DiVA

By author/editor
Chen, ZhePeng, Ru LinGustafsson, DavidPalmert, FransMoverare, Johan
By organisation
Engineering MaterialsFaculty of Science & Engineering
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 168 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 119 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf