EFFECT OF B4C ADDITION ON THE MICROSTRUCTURE, HARDNESS AND DRY-SLIDING-WEAR PERFORMANCE OF AZ91 COMPOSITES PRODUCED WITH HOT PRESSING

被引：7

作者：

Oge, Tuba Ozdemir ^{[1
]}

Oge, Mecit ^{[2
]}

Yilmaz, Volkan Murat ^{[3
]}

Ozdemir, Firdevs Banu ^{[4
]}

机构：

[1] Bartin Univ, Vocat Sch Hlth Serv, Agdaci Campus, TR-74100 Bartin, Turkey

[2] Bartin Univ, Fac Engn, Dept Mech Engn, Kutlubey Yazicilar Campus, TR-74100 Bartin, Turkey

[3] Bartin Univ, Cent Res Lab, Kutlubey Yazicilar Campus, TR-74100 Bartin, Turkey

[4] Beykent Univ, Dept Hlth Programmes, TR-34550 Istanbul, Turkey

来源：

MATERIALI IN TEHNOLOGIJE | 2019年 / 53卷 / 03期

关键词：

metal-matrix composites; particle size; boron carbide; AZ91; material characterization; SEM; hardness; dry sliding wear; MATRIX COMPOSITES; MECHANICAL-PROPERTIES; AL; BEHAVIORS; FRICTION;

D O I：

10.17222/mit.2018.127

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

AZ91-B4C composites were fabricated with varying reinforcement ratios (5 w/%, 10 w/%. 20 w/% and 50 w/%) B4C) via powder metallurgy and hot pressing to examine their microstructure, hardness and dry-sliding-wear performance. Powder compositions were verified with XRD and the microstructure of the sintered composites was evaluated using SEM (Scanning Electron Microscope) and EDS analyses. Hardness measurements and dry-sliding-wear tests were performed to evaluate the effect of reinforcement addition on the hardness and wear performance of the fabricated composites. Hot pressing of the composite with 50 w/% B4C required a significantly higher sintering pressure at the same sintering temperature. Increasing the B4C addition resulted in increased hardness values for all the composites. whereas the lowest worn volume and coefficient of friction were obtained with 10 w/% B4C.

引用

页码：433 / 440

页数：8

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