Die Wall - Vs. Bulk Lubrication in Warm Die Compaction: Density, Microstructure and Mechanical Properties of Three Low Alloyed Steels-Reference-Cited by-同舟云学术

Die Wall - Vs. Bulk Lubrication in Warm Die Compaction: Density, Microstructure and Mechanical Properties of Three Low Alloyed Steels

Published:2019-09-01 Issue:1 Volume:19 Page:44-52
ISSN:1339-4533
Container-title:Powder Metallurgy Progress
language:en
Short-container-title:

Author:

Zadra M.¹,Girardini L.¹,Pederzini G.²,Patuelli G.²,Piva M.²,Bordin S.³,De Mitri L.³,Popolizio A.⁴,Cristofolini I.⁴,Molinari A.⁴

Affiliation:

1. K4Sint Srl, via Dante 300, 38057 Pergine Valsugana , (TN), Italy

2. Powder Metal B.U. – Sacmi Imola S.C., via Selice 17, 40026, Imola (BO), Italy

3. TFM SpA, via del Concilio 3, 35035 Lissaro di Mestrino (PD), Italy

4. University of Trento , via Sommarive 9, 38123 Povo di Trento, Italy

Abstract

Abstract The influence of die wall lubrication during warm die compaction on densification, microstructure and mechanical properties of three low alloy ferrous powders was investigated. Specimens were sintered at 1250°C. Die wall lubrication leads to higher green and sintered density and enhances the dimensional stability. It does not affect the microstructure of the matrix, while pores are smaller and more rounded than in bulk lubricated specimens. In TRS tests, both strength and deformation are higher in die wall lubricated specimens than bulk lubricated ones.

Publisher

Walter de Gruyter GmbH

Subject

Metals and Alloys,Mechanics of Materials

Reference18 articles.

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