Surface integrity and fatigue strength of hard milled surfaces

W. Li, Y. B. Guo, M. E. Barkey, C. Guo, Z. Q. Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

Tool flank wear during hard milling adversely affects surface integrity and, therefore, fatigue strength of machined components. Surface integrity and machining accuracy deteriorate when tool wear progresses. In this paper, surface integrity and its impact on endurance limit of AISI H13 tool steel (50 ± 1 HRC) by milling using PVD coated tools are studied. The evolutions of surface integrity including surface roughness, microhardness and microstructure were characterized at three levels of tool flank wear (VB = 0, 0.1mm, 0.2mm). At each level of tool flank wear, the effects of cutting speed, feed, and radial depth-of-cut on surface integrity were investigated respectively. Fatigue endurance limits of the machined surfaces at different reliability levels were calculated and correlated with the experimentally determined fatigue life. The good surface finish and significant strain-hardening on the machined surfaces enhance endurance limit, which enables machined components have a fatigue life over 106 cycles.

Original languageEnglish (US)
Title of host publicationASME 2011 International Manufacturing Science and Engineering Conference, MSEC 2011
Pages199-206
Number of pages8
DOIs
StatePublished - 2011
Externally publishedYes
EventASME 2011 International Manufacturing Science and Engineering Conference, MSEC 2011 - Corvallis, OR, United States
Duration: Jun 13 2011Jun 17 2011

Publication series

NameASME 2011 International Manufacturing Science and Engineering Conference, MSEC 2011
Volume2

Other

OtherASME 2011 International Manufacturing Science and Engineering Conference, MSEC 2011
Country/TerritoryUnited States
CityCorvallis, OR
Period6/13/116/17/11

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

Keywords

  • Endurance limit
  • Flank wear
  • Hard milling
  • Surface integrity
  • Tool steels

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