Synthesis of Ti-6Al-4V alloy with nano-TiN microstructure via spark plasma sintering technique

被引：13

作者：

Falodun, O. E. ^{[1
]}

Obadele, B. A. ^{[1
]}

Oke, S. R. ^{[1
]}

Maja, M. E. ^{[1
]}

Olubambi, P. A. ^{[1
]}

机构：

[1] Univ Johannesburg, Ctr Nanoengn & Tribocorros, Sch Min Met & Chem Engn, Doornfontein Campus, Johannesburg, South Africa

来源：

4TH INTERNATIONAL CONFERENCE ON MECHANICAL, MATERIALS AND MANUFACTURING (ICMMM 2017) | 2017年 / 272卷

基金：

新加坡国家研究基金会;

关键词：

MECHANICAL-PROPERTIES; COMPOSITES; POWDERS; TEMPERATURE;

D O I：

10.1088/1757-899X/272/1/012029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of nano-TiN dispersion strengthened Ti-6Al-4V via spark plasma sintering method has been investigated. Ti-6Al-4V with 4 vol. percent of nano-TiN were mixed in a Turbula shaker mixer for 8 h at a speed of 49 rpm and the admixed powders were sintered at sintering temperature range of 1000 - 1100 degrees C, holding time of 10-30 mins, heating rate of 100 degrees C/min under an applied pressure of 50 MPa. The morphology of the as-received and sintered compacts was examined by scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS) and phase analysis was done by X-ray diffractometry (XRD). The sintered compacts without nano-TiN reveal lamellar structure while reinforced Ti-6Al-4V with nano-TiN shows a bimodal structure and titanium nitride has a great influence on a grain growth at high temperature. Furthermore, the microstructural formation mechanism was investigated. With the addition of the content of Ti-6Al-4V with 4 vol.% of nano-TiN, the micro-hardness also improved and this was due to homogenous distribution of TiN in Ti-6Al-4V matrix.

引用

页数：6

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