Influence of heat treatment and densification on the load capacity of sintered gears

Autor:	Philipp Scholzen, Ali Rajaei, Jens Brimmers, Bengt Hallstedt, Thomas Bergs, Christoph Broeckmann
Přispěvatelé:	Publica
Rok vydání:	2022
Předmět:	surface densification sintered gears load bearing capacity Metals and Alloys numerical modelling Condensed Matter Physics gears Powder metallurgy Mechanics of Materials residual stresses Materials Chemistry Ceramics and Composites case hardening heat treatment simulation
Zdroj:	Powder Metallurgy. 66:86-93
ISSN:	1743-2901 0032-5899
DOI:	10.1080/00325899.2022.2138171
Popis:	The powder metallurgical manufacturing of gears offers a promising opportunity in terms of reducing the noise emission and increasing the power density. Sintered gears weigh less than conventional gears and potentially have a better noise-vibration-harshness behaviour, due to the remaining porosity. However, the potential of sintered gears for highly loaded applications is not fully utilised yet. Six variants of surface densified and case-hardened sintered gears from Astaloy Mo85 are tested to analyse the impact of the densification and case hardening depths on both the tooth root and flank load bearing capacities. Experimental investigations including metallography and computer tomography are carried out to characterise the microstructure. Furthermore, a simulation model is developed to quantitatively describe the residual stress and hardness profiles after the heat treatment. The load bearing capacity was improved by increasing the densification and case hardening depths, where the effect of the case hardening was identified to be predominant.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f03952a887596085cdc7e52e2df93634 https://doi.org/10.1080/00325899.2022.2138171 Zobrazit plný text záznamu