Surface gas nitriding of Ti-6Al-4V and Ti-6Al-2Sn-4Zr-2Mo-0.08Si alloys

被引：27

作者：

Zhecheva, A ^{[1
]}

Malinov, S ^{[1
]}

Sha, W ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Civil Engn, Belfast BT7 1NN, Antrim, North Ireland

来源：

ZEITSCHRIFT FUR METALLKUNDE | 2003年 / 94卷 / 01期

关键词：

titanium alloys; gas nitriding; hardness; microstructure; X-ray diffraction;

D O I：

10.3139/146.030019

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The paper presents results from thermochemical surface gas nitriding of Ti-6A1-4V and Ti-6A1-2Sn-4Zr-2Mo-0.08Si alloys using differential scanning calorimetry equipment. The experiments were carried out in nitrogen atmosphere at temperatures of 950 and 1050 degreesC for 1, 3 and 5 h. Results for the surface hardness, the microhardness profiles and the thickness of the nitrided layers were obtained. Microstructure analyses were made by optical microscopy. X-ray diffraction analyses indicated new phases formed (TiN, TiN0.3, Ti2N and TiO2), depending on the time and the temperature of nitriding. The obtained thickness of the nitrided layers was in the range 60-320 mum depending on the process parameters. The Vickers microhardness along the cross-section depth varied between 610 and 1700.

引用

页码：19 / 24

页数：6

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