Influence of tempering on contact fatigue
2009 (English)In: New challenges in heat treatment and surface engineering, conference in honour of Prof Božidar Liščić, Dubrovnik, Cavtat, Croatia 9-12 June 2009, 2009, 87-94 p.Conference paper (Refereed)
Most components are tempered after heat treatment operations such as case hardening orinduction hardening. The common opinion is that the martensitic structure after heat treatmentis too brittle and tempering is necessary to increase toughness.
Tempering is an additional operation which leads to increased costs by energy, handling,and investments. Eliminating tempering from the heat treatment process leads to increasedproductivity, energy savings, and lowered environmental impact.
Two carburised steels, Ovako 253 and 20NiCrMo2 (AISI 8620, SS2506), were tested forcontact fatigue resistance in a roller to roller rig. The tested samples were characterised withrespect to amount of fatigue damage, residual stress, amount of retained austenite andhardness. The objective was to determine if tempering is always necessary after a heattreatment operation.
The contact fatigue tests show that tempering results in lower contact fatigue resistance.
Place, publisher, year, edition, pages
2009. 87-94 p.
Tempering, carburising, case hardening, rolling contact fatigue, 20NiCrMo2 (SS2506), Ovako 253
Engineering and Technology Production Engineering, Human Work Science and Ergonomics
Research subject Production Engineering
IdentifiersURN: urn:nbn:se:kth:diva-47690OAI: oai:DiVA.org:kth-47690DiVA: diva2:456035
New challenges in heat treatment and surface engineering, IFHTSE. Dubrovnik - Cavtat, Croatia. 09 - 12 June 2009
FunderXPRES - Initiative for excellence in production researchVINNOVAKnowledge Foundation
QC 201111142011-11-112011-11-112016-05-20Bibliographically approved