Laser cladding of Fe-Cu based alloys on aluminum

被引：11

作者：

Uenishi, Keisuke ^{[1
]}

Ogata, Yasuhito ^{[2
]}

Iwatani, Shingo ^{[2
]}

Adachi, Akira ^{[1
]}

Sato, Takehiko ^{[1
]}

Kobayashi, Kojiro F. ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Management Ind & Technol, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Grad Sch Engn, Dept Mfg Sci, Osaka 565 0871, Japan

来源：

DESIGNING OF INTERFACIAL STRUCTURES IN ADVANCED MATERIALS AND THEIR JOINTS | 2007年 / 127卷

关键词：

laser cladding; diode laser; surface modification; aluminum alloy; iron-based cladding material; immiscible alloy;

D O I：

10.4028/www.scientific.net/SSP.127.331

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For the improvement of a surface wear resistance of aluminum alloys, iron-based alloys were clad on the surface of an aluminum alloy by laser. By investigating the effect of CO2 and diode laser irradiation conditions on the formability of Fe-Cr-C clad layers, it was confirmed that the application of diode laser made it possible to obtain stable beads in low heat input compared with CO2 laser, which has been conventionally used for laser cladding. Besides, by optimizing the laser parameters, the dilution ratio of clad layers by Al substrate was minimized less than 10%. At the clad interface, the reaction layer consisting of Fe2Al5 and FeAl3 formed which caused cracks at the clad interface. Even by controlling laser conditions, this brittle layer formation could not suppressed. In this research, by using the immiscible Fe-Cu-Cr alloys as clad materials, Fe based clad layers were formed on Al substrate without any cracks at clad interface. By the effect of Marangoni motion of decomposed duplex liquid phases, Cu segregated between Al substrate and Fe based clad layers and suppressed the reaction between them.

引用

页码：331 / +

页数：2

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