CHANGES IN MECHANICAL PROPERTIES OF AS-CAST MAGNESIUM ALLOY AZ91 AFTER EQUAL CHANNEL ANGULAR PRESSING

This article deals with differences in mechanical characteristics of AZ91 magnesium alloy in the as-cast state and after the subsequent equal channel angular pressing (ECAP) and with measurement of local microhardness. According to the obtained results, the tensile properties increased by a factor o...

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Bibliographic Details
Published in:Materiálové inžinierstvo 2015-10, Vol.22 (4), p.160-160
Main Authors: Stepánek, Roman, Pantelejev, Libor
Format: Article
Language:English
Subjects:
Alloys
Equal channel angular pressing
Magnesium base alloys
Mechanical properties
Methods
Microhardness
Microstructure
Proof stress
Symbols
Tensile strength
Ultimate tensile strength
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Summary:This article deals with differences in mechanical characteristics of AZ91 magnesium alloy in the as-cast state and after the subsequent equal channel angular pressing (ECAP) and with measurement of local microhardness. According to the obtained results, the tensile properties increased by a factor of two due to the ECAP procedure. The proof stress, ... increased to 160 MPa and the ultimate tensile strength, ..., to 321 MPa. The local microhardness of ECAPed alloy varied between 70 and 91 HV 0.025 due to microstructural bimodality. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:1335-0803
1338-6174