Laser Cladding Al<sub>3</sub>Ti Coatings on AA6063 Aluminum Alloys

Fu Yuechun; Jiang Yibin; He Huan; Zeng Jianmin

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Laser Cladding Al₃Ti Coatings on AA6063 Aluminum Alloys
Vol. 30, Issue 1, Pages: 15-17(2010)
Published： 2010 ，
DOI：

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[1]符跃春,蒋义斌,何欢,曾建民.AA6063铝合金表面激光熔覆Al_3Ti涂层[J].特种铸造及有色合金,2010,30(01):15-17+122.

Fu Yuechun, Jiang Yibin, He Huan, et al. Laser Cladding Al₃Ti Coatings on AA6063 Aluminum Alloys. [J]. Special Casting & Nonferrous Alloys 30(1):15-17(2010)
[1]符跃春,蒋义斌,何欢,曾建民.AA6063铝合金表面激光熔覆Al_3Ti涂层[J].特种铸造及有色合金,2010,30(01):15-17+122. DOI：

Fu Yuechun, Jiang Yibin, He Huan, et al. Laser Cladding Al₃Ti Coatings on AA6063 Aluminum Alloys. [J]. Special Casting & Nonferrous Alloys 30(1):15-17(2010) DOI：

摘要

将Al和Ti粉末按照摩尔比为3∶1预涂在AA6063铝合金表面进行激光熔覆处理。试验结果表明

采用合适的激光功率和扫描速度可获得无裂纹、无孔洞且表面平整的涂层。涂层由枝晶状Al3Ti和枝晶间纯Al组成

Al3Ti枝晶靠近试样表面一侧细小、而靠近基材一侧粗大

涂层和基材之间形成了良好的冶金结合。涂层的硬度（HV）可达500

显著改善了铝合金的表面性能。

Abstract

Laser cladding experiment was conducted on AA6063 aluminum alloy by pre-coating Al and Ti powder with 3∶1 in atomic ratio.The results reveal that coating with smooth surface and crack-free as well as porous free can be obtained by using proper laser power and scanning velocity.The coating is composed of Al3Ti dendrite and interdendritic pure Al phase

in which Al3Ti dendrite exhibits fine structure nearby surface of the samples and it exhibits coarse structure nearby the matrix

and desirable metallurgical bonding between the coating and matrix can be observed.The hardness of the coating reach up to Hv500

significantly improving the surface performance of the aluminum alloy.