Next Article in Journal
Hydrothermal Synthesis of Co-Doped NiSe2 Nanowire for High-Performance Asymmetric Supercapacitors
Previous Article in Journal
Experimental Study of Macro and Microgeometric Defects in Drilled Carbon Fiber Reinforced Plastics by Laser Beam Machining
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Materials 2018, 11(8), 1467; https://doi.org/10.3390/ma11081467

Microstructures, Mechanical and Corrosion Properties of the Extruded AZ31-xCaO Alloys

1
School of Materials Engineering, Jiangsu University of Technology, Changzhou 213001, China
2
Key Laboratory of Advanced Materials Design and Additive Manufacturing of Jiangsu Province, Changzhou 213001, China
*
Author to whom correspondence should be addressed.
Received: 18 July 2018 / Revised: 9 August 2018 / Accepted: 12 August 2018 / Published: 18 August 2018
Full-Text   |   PDF [10748 KB, uploaded 18 August 2018]   |  

Abstract

The effects of the extrusion process and CaO addition amount on microstructure, mechanical, and corrosion properties of AZ31 alloys were investigated by means of optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), standard tensile testing, and so on. The grain size of AZ31 or AZ31-1%CaO alloy becomes larger with increasing extrusion temperature. The grain size of AZ31-1%CaO alloy is much smaller than that of AZ31 alloy at the same extrusion temperature. In addition, the formation of the Al2Ca phase caused by CaO addition refines the grain size, and the recrystallization of AZ31-1%CaO alloy is improved significantly. The recrystallization grains distribute more uniformly as the increase of extrusion ratio, and the completely recrystallized grains distribute uniformly in the form of equiaxed crystals with an extrusion ratio of 9. Tensile testing results show that extruded AZ31-1%CaO alloy at the extrusion temperature of 300 °C and an extrusion ratio of 9 exhibits the best mechanical properties. While corrosion properties of AZ31 alloys decreases due to the addition of CaO. View Full-Text
Keywords: AZ31-xCaO alloy; microstructures; mechanical properties; corrosion properties AZ31-xCaO alloy; microstructures; mechanical properties; corrosion properties
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Lu, Y.; Zhang, Y.; Cong, M.; Li, X.; Xu, W.; Song, L. Microstructures, Mechanical and Corrosion Properties of the Extruded AZ31-xCaO Alloys. Materials 2018, 11, 1467.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top