Details

Title

The Influence of Casting Defects on Fatigue Resistance of Elektron 21 Magnesium Alloy

Journal title

Archives of Foundry Engineering

Yearbook

2013

Numer

No 2

Publication authors

Keywords

Casting Defect ; Mechanical Properties ; microstructure ; Magnesium Alloy ; Elektron 21

Divisions of PAS

Nauki Techniczne

Description

Archives of Foundry Engineering continues the publishing activity started by Foundry Commission of the Polish Academy of Sciences (PAN) in Katowice in 1978. The initiator of it was the first Chairman Professor Dr Eng. Wacław Sakwa – Corresponding Member of PAN, Honorary Doctor of Czestochowa University of Technology and Silesian University of Technology. This periodical first name was „Solidification of Metals and Alloys” , and made possible to publish the results of works achieved in the field of the Basic Problems Research Cooperation. The subject of publications was related to the title of the periodical and concerned widely understand problems of metals and alloys crystallization in a casting mold. In 1978-2000 the 44 issues have been published. Since 2001 the Foundry Commission has had patronage of the annually published “Archives of Foundry” and since 2007 quarterly published “Archives of Foundry Engineering”. Thematic scope includes scientific issues of foundry industry:

  • Theoretical Aspects of Casting Processes,
  • Innovative Foundry Technologies and Materials,
  • Foundry Processes Computer Aiding,
  • Mechanization, Automation and Robotics in Foundry,
  • Transport Systems in Foundry,
  • Castings Quality Management,
  • Environmental Protection.

Abstract

The Mg-RE alloys are attractive, constructional materials, especially for aircraft and automotive industry, thanks to combination of low density, good mechanical properties, also at elevated temperature, and good castability and machinability. Present paper contains results of fatigue resistance test carried out on Elektron 21 magnesium alloy, followed by microstructural and fractographical investigation of material after test. The as-cast material has been heat treated according to two different procedures. The fatigue resistance test has been conducted with 106 cycles of uniaxial, sine wave form stress between 9 MPa and 90 MPa. Fractures of specimens, which ruptured during the test, have been investigated with scanning electron microscope. The microstructure of specimens has been investigated with light microscopy. Detrimental effect of casting defects, as inclusions and porosity, on fatigue resistance has been proved. Also the influence of heat treatment's parameters has been described.

Publisher

The Katowice Branch of the Polish Academy of Sciences

Date

2013

Type

Artykuły / Articles

Identifier

ISSN 2299-2944

References

Nie (2005), Enhanced age hardening response and creep resistance of Mg - Gd alloys containing Zn, Scripta Materialia, 53, doi.org/10.1016/j.scriptamat.2005.07.004 ; Kuffova (2011), Fatigue Endurance of Magnesium Processing and Properties ISBN Available from : http : www intechopen com books magnesium - alloys - design - processing - andproperties / fatigue - endurance - of - magnesium - alloys, Alloys Magnesium Alloys Design InTech, 978. ; He (2006), Precipitation in a Mg wt ) alloy during isothermal ageing at of Alloysand Compounds, Journal, 10, 250.

DOI

10.2478/afe-2013-0046

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