Laser surface alloying of ZM5 Mg alloy with Al powder

Author

Chen Changjun ; Zhang Min ; Su Yanzhan ; Zhang Shichang ; Chang Qingming ; Chen Xia

Author_Institution

Laser Process. Res. Centre, Wuhan Univ. of Sci. & Technol., Wuhan, China

fYear

2010

fDate

26-28 June 2010

Firstpage

3701

Lastpage

3703

Abstract

The aim of this work was to improve the corrosion resistance of the cast ZM5 Mg alloy by laser surface alloying with Al powder. The laser alloying with Al on ZM5 Mg alloy was carried out by a pulsed Nd: YAG laser. The microhardness of the surface alloyed layer was measured by a microhardness Vickers tester. The microstructure of the alloyed layer is network. Microhardness of the laser surface alloyed layer was enhanced to 125-143Hv as compared to 72.7-92.6Hv for the untreated substrate. The corrosion resistance of the surface alloyed layer was improved as compared to alloy without laser treatment.

Keywords

Vickers hardness; aluminium; corrosion resistance; laser hardening; magnesium alloys; microhardness; surface treatment; Al powder; Nd:YAG laser; Vickers tester; ZM5 Mg alloy; corrosion resistance; laser surface alloying; laser treatment; microhardness; Alloying; Aluminum alloys; Corrosion; Electrical resistance measurement; Neodymium; Optical pulses; Powders; Surface emitting lasers; Surface resistance; Surface treatment; Al; Corrosion; laser surface alloying; magnesium alloy;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-7737-1

Type

conf

DOI

10.1109/MACE.2010.5536408

Filename

5536408