Title :
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
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;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-7737-1
DOI :
10.1109/MACE.2010.5536408
