Gas Quench Rate after Low Pressure Carburizing and its Influence on Fatigue Properties of Gears
2013 (English)In: HTM - Journal of Heat Treatment and Materials, ISSN 1867-2493, Vol. 68, no 6, 239-245 p.Article in journal (Refereed) Published
Process modifications of the gas quench sequence for low pressure carburized gears can increase the performance of up to 22 %, compared to direct gas quenching. Several test series were made with different interruptions of the gas quenching sequence, near the martensite start temperature Ms. The quench interruption resulted in an increase in magnitude of compressive residual stress which was attributed to temperature homogenization and rearrangement of local stresses. The increased fatigue strength was a result of the combination of enhancement of the compressive residual stress state, and of mechanical stabilization of austenite.
Place, publisher, year, edition, pages
Carl Hanser Verlag GmbH, 2013. Vol. 68, no 6, 239-245 p.
Steels, martensite, hardening, low pressure carburizing, gas cooling, fatigue strength, fracture surface, residual stress, dilatometer
Production Engineering, Human Work Science and Ergonomics
Research subject SRA - Production
IdentifiersURN: urn:nbn:se:kth:diva-137060DOI: 10.3139/105.110203ScopusID: 2-s2.0-84893858890OAI: oai:DiVA.org:kth-137060DiVA: diva2:677820
FunderXPRES - Initiative for excellence in production research
QC 201402112013-12-102013-12-102016-04-18Bibliographically approved