Improved tensile properties of low-temperature and low-speed extruded Mg–χAl–(4.8 − χ)Ca–0.6Mn alloys

Improved tensile properties of low-temperature and low-speed extruded Mg–χAl–(4.8 − χ)Ca–0.6Mn alloys

In this work, the microstructure and mechanical properties of Mg–Al–Ca–Mn alloys with different Ca/Al ratios (0.2, 0.6 and 1.0) have been investigated. The results showed that with the increase of the Ca/Al ratios, the grain sizes of the alloys were significantly refined, and the morphologies and ty...

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Main Authors: An Yang, Kaibo Nie, Kunkun Deng, Yanan Li
Format: Article
Language:English
Published: Elsevier 2020-09-01
Series:Journal of Materials Research and Technology
Subjects:
Mg–Al–Ca–Mn alloys
Extrusion
Microstructures
Mechanical properties
Work hardening
Online Access:http://www.sciencedirect.com/science/article/pii/S2238785420316422
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spelling doaj-19fc4949cb064defb2d0243197c7b8212020-11-25T03:36:39ZengElsevierJournal of Materials Research and Technology2238-78542020-09-01951171711730Improved tensile properties of low-temperature and low-speed extruded Mg–χAl–(4.8 − χ)Ca–0.6Mn alloysAn Yang0Kaibo Nie1Kunkun Deng2Yanan Li3College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, PR China; Corresponding author.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, PR ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR ChinaIn this work, the microstructure and mechanical properties of Mg–Al–Ca–Mn alloys with different Ca/Al ratios (0.2, 0.6 and 1.0) have been investigated. The results showed that with the increase of the Ca/Al ratios, the grain sizes of the alloys were significantly refined, and the morphologies and types of main second phases changed from a block Mg17Al12 phase to a semi-continuous Al2Ca (C15) phase and a continuous network (Mg, Al)2Ca (C36) phase. The extruded Mg–2.4Al–2.4Ca–0.6Mn alloy, which was consisted of dynamically recrystallized grains and undynamically recrystallized regions, possessed outstanding mechanical properties with the yield strength of 335.9 MPa, the ultimate tensile strength of 354.7 MPa and the elongation of 8.4%. This was mainly due to the resultant effects of grain refinement strengthening, secondary phases strengthening, texture strengthening and work hardening.http://www.sciencedirect.com/science/article/pii/S2238785420316422Mg–Al–Ca–Mn alloysExtrusionMicrostructuresMechanical propertiesWork hardening
collection DOAJ
language English
format Article
sources DOAJ
author An Yang
Kaibo Nie
Kunkun Deng
Yanan Li
spellingShingle An Yang
Kaibo Nie
Kunkun Deng
Yanan Li
Improved tensile properties of low-temperature and low-speed extruded Mg–χAl–(4.8 − χ)Ca–0.6Mn alloys
Journal of Materials Research and Technology
Mg–Al–Ca–Mn alloys
Extrusion
Microstructures
Mechanical properties
Work hardening
author_facet An Yang
Kaibo Nie
Kunkun Deng
Yanan Li
author_sort An Yang
title Improved tensile properties of low-temperature and low-speed extruded Mg–χAl–(4.8 − χ)Ca–0.6Mn alloys
title_short Improved tensile properties of low-temperature and low-speed extruded Mg–χAl–(4.8 − χ)Ca–0.6Mn alloys
title_full Improved tensile properties of low-temperature and low-speed extruded Mg–χAl–(4.8 − χ)Ca–0.6Mn alloys
title_fullStr Improved tensile properties of low-temperature and low-speed extruded Mg–χAl–(4.8 − χ)Ca–0.6Mn alloys
title_full_unstemmed Improved tensile properties of low-temperature and low-speed extruded Mg–χAl–(4.8 − χ)Ca–0.6Mn alloys
title_sort improved tensile properties of low-temperature and low-speed extruded mg–χal–(4.8 − χ)ca–0.6mn alloys
publisher Elsevier
series Journal of Materials Research and Technology
issn 2238-7854
publishDate 2020-09-01
description In this work, the microstructure and mechanical properties of Mg–Al–Ca–Mn alloys with different Ca/Al ratios (0.2, 0.6 and 1.0) have been investigated. The results showed that with the increase of the Ca/Al ratios, the grain sizes of the alloys were significantly refined, and the morphologies and types of main second phases changed from a block Mg17Al12 phase to a semi-continuous Al2Ca (C15) phase and a continuous network (Mg, Al)2Ca (C36) phase. The extruded Mg–2.4Al–2.4Ca–0.6Mn alloy, which was consisted of dynamically recrystallized grains and undynamically recrystallized regions, possessed outstanding mechanical properties with the yield strength of 335.9 MPa, the ultimate tensile strength of 354.7 MPa and the elongation of 8.4%. This was mainly due to the resultant effects of grain refinement strengthening, secondary phases strengthening, texture strengthening and work hardening.
topic Mg–Al–Ca–Mn alloys
Extrusion
Microstructures
Mechanical properties
Work hardening
url http://www.sciencedirect.com/science/article/pii/S2238785420316422
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AT kaibonie improvedtensilepropertiesoflowtemperatureandlowspeedextrudedmgchal48chca06mnalloys
AT kunkundeng improvedtensilepropertiesoflowtemperatureandlowspeedextrudedmgchal48chca06mnalloys
AT yananli improvedtensilepropertiesoflowtemperatureandlowspeedextrudedmgchal48chca06mnalloys
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