Effect of gaseous carburizing thermochemical treatment on tribological behavior of Ti-6Al-4V alloy

被引：1

作者：

Talhi, Amar ^{[1
]}

Touhami, Mohamed Zine ^{[1
]}

Fedaoui, Kamel ^{[2
]}

机构：

[1] Badji Mokhtar Univ Annaba, Met & Mat Engn, Foundry Lab, Annaba, Algeria

[2] Univ Constantine 1, Constantine, Algeria

来源：

FRATTURA ED INTEGRITA STRUTTURALE-FRACTURE AND STRUCTURAL INTEGRITY | 2021年 / 15卷 / 58期

关键词：

Ti-6Al-4V; Tribological behavior; Carburizing; Wear; Hardness; WEAR BEHAVIOR; TI; TITANIUM; FRICTION; FATIGUE;

D O I：

10.3221/IGF-ESIS.58.13

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study concerns the improvement of performance of resistance to wear phenomena of the Ti-6Al-4V alloy surface by means of Gaseous carburizing thermochemical treatment. Three- thermochemical treatment durations (2h, 4h, and 6h) were chosen for investigation of the effect of such treatment on this alloy. The hardness test under an indentation load of 0.05 kgf with a Vickers pyramidal indenter revealed that the surface hardness is 335 HV for the untreated samples. The hardness reaches approximately 1500 HV during gas cementation at 930 degrees C for variable times (2h, 4h, 6h) followed by quenching at 840 degrees C in an oil medium, which was accompanied by a significant improvement in wear resistance. The characterization of the modified surface layers was studied by means of a microscopic analysis and by X-ray diffraction. The case-hardening made it possible to obtain a wear resistance greater than that of the alloy not treated, minimal loss of mass by dry friction and an improvement in roughness as well as a good coefficient of friction.

引用

页码：179 / 190

页数：12

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