Properly modelling the anisotropic dimensional change on sintering is a difficult task, given the large number of variables involved, which depend on material, process, and geometry. In previous works a preliminary analysis was performed, and an analytical model, based on experimental data, was proposed. This work investigates in depth the influence of geometry and process variables on the anisotropy parameter K, which allows estimating the entity of anisotropy. Axisymmetric iron parts were considered; the influence of the ratio between internal and external diameter was investigated. Special attention was paid to the dimensional changes in the compaction plane, those mainly affecting the design of the compaction tools, being different the influence of the process variables on the dimensional variation in the external and internal diameter. The influence of process parameters, specifically green density and sintering temperature, was also studied. A relationship between K and process variables is proposed.

Influence of Geometry and Process Variables on the Anisotropy Parameter K / Cristofolini, Ilaria; Corsentino, Nicolò; Molinari, Alberto; Larsson, Mats. - CD-ROM. - 01:(2015), pp. 31-40. ((Intervento presentato al convegno Powdermet2015 tenutosi a San Diego - CA nel 17-20 May 2015.

Influence of Geometry and Process Variables on the Anisotropy Parameter K

Cristofolini, Ilaria;Corsentino, Nicolò;Molinari, Alberto;
2015-01-01

Abstract

Properly modelling the anisotropic dimensional change on sintering is a difficult task, given the large number of variables involved, which depend on material, process, and geometry. In previous works a preliminary analysis was performed, and an analytical model, based on experimental data, was proposed. This work investigates in depth the influence of geometry and process variables on the anisotropy parameter K, which allows estimating the entity of anisotropy. Axisymmetric iron parts were considered; the influence of the ratio between internal and external diameter was investigated. Special attention was paid to the dimensional changes in the compaction plane, those mainly affecting the design of the compaction tools, being different the influence of the process variables on the dimensional variation in the external and internal diameter. The influence of process parameters, specifically green density and sintering temperature, was also studied. A relationship between K and process variables is proposed.
Advances in Powder Metallurgy and Particulate Materials - 2015
Princeton, New Jersey
Metal powder Industries Federation
9781943694020
Cristofolini, Ilaria; Corsentino, Nicolò; Molinari, Alberto; Larsson, Mats
Influence of Geometry and Process Variables on the Anisotropy Parameter K / Cristofolini, Ilaria; Corsentino, Nicolò; Molinari, Alberto; Larsson, Mats. - CD-ROM. - 01:(2015), pp. 31-40. ((Intervento presentato al convegno Powdermet2015 tenutosi a San Diego - CA nel 17-20 May 2015.
File in questo prodotto:
File Dimensione Formato  
adv 2015 1-31_40.pdf

Solo gestori archivio

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 755.71 kB
Formato Adobe PDF
755.71 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/112928
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? ND
social impact