Effect of surface hardening technique and case depth on rolling contact fatigue behavior of alloy steels

Lechun Xie, David Palmer, Frederick Otto, Q Jane Wang

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

Abstract

Surface hardening techniques are widely used to improve the rolling contact fatigue resistance of materials. This study investigated the rolling contact fatigue (RCF) resistance of hardened, ground steel rods made from three different aircraft-quality alloy steels (AISI 8620, 9310 and 4140), and hardened using different techniques (atmosphere carburizing, vacuum carburizing, and induction hardening) at different case depths. The fatigue life of the rods was determined using a three ball-on-rod rolling contact fatigue test machine. After testing, the surfaces of the rods were examined using scanning electron microscopy (SEM), and their microstructures were examined using metallographic techniques. In addition, the surface topography of the rods was measured using white-light interferometry. Relationships between surface hardness, case depth, and fatigue life were investigated. The case eccentricity (defined as the distance between the specimen axis and the center of a circumscribed circle, generated from three case depth measurements in different locations around the circumference) was used as a measurement of the uniformity of the grinding process. Results are shown in Table 1. Table Presented.

Original languageEnglish (US)
Title of host publicationSociety of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2014
PublisherSociety of Tribologists and Lubrication Engineers
Pages261-312
Number of pages52
Volume1
ISBN (Electronic)9781634391351
StatePublished - Jan 1 2014
EventSociety of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2014 - Lake Buena Vista, United States
Duration: May 18 2014May 22 2014

Other

OtherSociety of Tribologists and Lubrication Engineers Annual Meeting and Exhibition 2014
CountryUnited States
CityLake Buena Vista
Period5/18/145/22/14

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry
  • Process Chemistry and Technology
  • Surfaces and Interfaces
  • Materials Chemistry

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