Laser Repair Cladding of Ni-base alloy on TC2 Ti Alloy

被引：3
|
作者：
Chen Changjun [1 ]
Cao Qin [1 ]
Zhang Min [1 ]
Chang Qingming [1 ]
Zhang Shichang [1 ]
机构：
[1] Wuhan Univ Sci & Technol, Key Lab Ferrous Met & Resources Utilizat, Laser Proc Res Ctr, Minist Educ,Coll Mat & Met, Wuhan 430081, Peoples R China
来源：
ADVANCED MATERIALS, PTS 1-4 | 2011年 / 239-242卷
关键词：
TC2 titanium alloy; Laser repairing cladding; Ni-base alloy; Microstructure; Microhardness; COATINGS;
D O I：
10.4028/www.scientific.net/AMR.239-242.2191
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
An attempt has been made to fabricate Ni-base alloy layer on the surface of TC2 titanium alloy substrate by laser repair cladding technology for repairing the worn surface of TC2 alloy after in service. Laser cladding is carried out by melting the preplaced Ni-base alloy powder using a continuous wave CO2 laser and using Ar as shielding gas. Microstructure and chemical composition of the cladding coating was revealed by optical microscope (OM), scanning electron microscope (SEM), together with the energy dispersive X-ray spectroscope (EDS). A clad layer with low dilution and metallurgically bonding coating to the substrate could be obtained. A significant improvement in microhardness is achieved in the cladding layer and at the interfacial region. The results showed that laser repair cladding is highly promising technology to restore damaged Ti alloy parts.
引用
收藏
页码：2191 / 2194
页数：4
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