Laser Gas Alloying of Ti-6Al-4V

被引：23

作者：

Majumdar, Jyotsna Dutta ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Metall & Maters Engg, Kharagpur 721302, W Bengal, India

来源：

LASERS IN MANUFACTURING 2011: PROCEEDINGS OF THE SIXTH INTERNATIONAL WLT CONFERENCE ON LASERS IN MANUFACTURING, VOL 12, PT A | 2011年 / 12卷

关键词：

Titanium; nitriding; laser; corrosion; residual stress; ION-IMPLANTED TI-6AL-4V; TITANIUM-ALLOYS; DIAMOND FILMS; WEAR;

D O I：

10.1016/j.phpro.2011.03.058

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The present study concerns in-depth analysis of the alloyed zone formed by laser gas alloying of Ti-6Al-4V by melting the surface using a continuous wave Diode laser using nitrogen shroud. A detailed structure-property-process parameters correlation has been undertaken to optimize the process parameters. The microstructure of the alloyed zone consists of dispersion of titanium nitrides in alpha-Ti matrix. The morphology and mass fraction of titanium nitride was found to vary with laser parameters (applied power and gas flow rate). Residual stress on the surface nitrided zone was found to vary with laser parameters, application of high power and low gas flow rate was found to be essential in reducing residual tensile stress. The microhardness and corrosion property of the alloyed zone were improved significantly as compared to as-received Ti-6Al-4V substrate.

引用

页码：472 / 477

页数：6

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