Influence of spark plasma sintering on microstructure and wear behaviour of Ti-6Al-4V reinforced with nanosized TiN

被引：48

作者：

Falodun, Oluwasegun Eso ^{[1
]}

Obadele, Babatunde Abiodun ^{[1
]}

Oke, Samuel Ranti ^{[1
]}

Ige, Oladeji Oluremi ^{[1
]}

Olubambi, Peter Apata ^{[1
]}

Lethabane, Moipone Linda ^{[2
]}

Bhero, Shepherd Willie ^{[3
]}

机构：

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

[2] Tshwane Univ Technol, Dept Chem Met & Mat Engn, Pretoria, South Africa

[3] Univ Johannesburg, Dept Engn Met, Doornfontein Campus, Johannesburg, South Africa

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2018年 / 28卷 / 01期

关键词：

spark plasma sintering; Ti-6Al-4V; TiN; microstructure; wear; NANOCRYSTALLINE TITANIUM NITRIDE; TI6AL4V ALLOY; MECHANICAL-PROPERTIES; ELEVATED-TEMPERATURE; COMPOSITE COATINGS; SURFACE; RESISTANCE; HARDNESS; POWDERS;

D O I：

10.1016/S1003-6326(18)64637-0

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Ti-6Al-4V/TiN composites were successfully consolidated by spark plasma sintering (SPS). TiN addition to Ti-6Al-4V was varied from 1% to 5% (volume fraction). The effect of TiN addition on the densification, microstructure, microhardness and wear behaviour of Ti-6Al-4V was studied. Experimental results showed reduction in sintered density of the compacts from 99% to 97% with increase in TiN content. However, an increase in microhardness value was recorded from HV0.1 389 to HV0.1 488. X-ray diffraction (XRD) analysis showed that the intensity of diffraction peaks of TiN phase in the composites increased also with formation of small amount of secondary Ti2N phase. SEM analysis of SPS sintered nanocomposites possessed a refinement of alpha/beta phase microstructure in Ti-6Al-4V with the presence of uniformly dispersed TiN particles. The worn surface of the composite showed improved abrasive wear resistance with non-continuous grooves as compared to the sintered Ti-6Al-4V without TiN addition.

引用

页码：47 / 54

页数：8

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