Rapid surface nitriding of titanium alloy by a nanosecond fiber laser under atmospheric conditions

被引：20

作者：

Katahira, Kazutoshi ^{[1
]}

Tanida, Yusuke ^{[2
]}

Takesue, Shogo ^{[2
]}

Komotori, Jun ^{[2
]}

机构：

[1] RIKEN, Mat Fabricat Lab, 2-1 Hirosawa, Wako, Saitama 3510198, Japan

[2] Keio Univ, Dept Mech Engn, Kohoku Ku, 3-14-1 Hiyoshi, Yokohama, Kanagawa 2238522, Japan

来源：

CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2018年 / 67卷 / 01期

关键词：

Laser; Titanium; Surface modification; Nitriding; TI-6AL-4V ALLOY; RESISTANCE;

D O I：

10.1016/j.cirp.2018.04.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A modified surface layer using a Yb nanosecond fiber laser beam under atmospheric conditions was fabricated by applying a surface nitriding process on disc-shaped Ti-6Al-4V samples. On the generated surface, a melt layer comprising a TiN dendrite structure and a heat affected zone containing a needle-like a phase were detected. The modified layer exhibited optimal characteristics with the treatment at a laser output power of 12 W, resulting in a hardness of 12 GPa. The results of friction wear evaluation tests revealed that the layer exhibited superior abrasion resistance compared with an untreated Ti-6Al-4V substrate. (C) 2018 CIRP. Published by Elsevier Ltd. All rights reserved.

引用

页码：563 / 566

页数：4

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