Spark Plasma Sintering and Hot Compression Analysis of Pure Mg and AZ91 Alloy

Pedro Augusto de Oliveira Botelho; Giovanni Straffelini; Cinzia Menapace

doi:10.4028/www.scientific.net/MSF.802.467

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HomeMaterials Science ForumMaterials Science Forum Vol. 802Spark Plasma Sintering and Hot Compression...

Spark Plasma Sintering and Hot Compression Analysis of Pure Mg and AZ91 Alloy

Abstract:

In this paper, we study the behavior of Pure Mg and AZ91 Mg alloy processed by Spark Plasma Sintering (SPS) under hot compression. On Pure Mg, SPS it was performed at 400OC. For AZ91 the powder was first homogenized for 50 minutes at 420OC and sintered at 470OC. The produced samples were able to produce a solid cylinder capable of being further processed with extrusion process and called preform. The same samples were submitted to a hot compression test at 330 and 380OC where they supported without breaking a strain of 0.5. We report a difference on the behavior of both materials after the yield point. For pure Mg, the work hardening was bigger than the so-called dynamic softening, and then the curve starts to rise after the yield point. On the AZ91 the effect is the opposite.

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Periodical:

Materials Science Forum (Volume 802)

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467-471

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.802.467

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Online since:

December 2014

Authors:

Pedro Augusto de Oliveira Botelho, Giovanni Straffelini, Cinzia Menapace

Keywords:

AZ91, Hot Compression, Magnesium, SPS

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