Dry sliding wear behavior of molybdenum alloyed sintered steels

Jun-an, Wang; Danninger, Herbert

doi:10.1016/s0043-1648(98)00279-8

Cited by 62 publications

(40 citation statements)

References 7 publications

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“…As W and Ti is one of the well-known carbide former. The presence of hard phase is easily cracked under high applied loads and the worn products acts as hard impurity or a particle (third body) between mating surfaces and join in the wear process results in higher mass loss during the wear test called Delamination wear 6 . At the applied load of 30 N ( Figure 3a) the amount of mass loss is lower for Fe-1C-1W-1Ti and Fe-1C-4W-1Ti alloy steel due to the removal of the thin oxide layer present on the surface and further to increase in sliding distance it remains constant.…”

Section: Dry Sliding Wear Behaviour Of Sintered/hot Extruded P/m Steementioning

confidence: 99%

“…The wear mechanisms of P/M alloy steel parts has similar properties compared to wrought materials, under the same tribological conditions, but the porosity plays a significant role in wear behaviour of alloy steels 4,5 . Wang et al 6 reported that quenched and tempered Mo-based low alloy P/M steel preforms has higher wear coefficient values compared to assintered preforms and also their sliding wear characteristics is considerably influenced by heat treatment. Dhanasekaran et al 7 studied about the addition of molybdenum di sulphide to the Fe-C-Cu P/M alloy and observed in increase in mechanical strength, hardness, coefficient of friction and also the wear resistance of the alloy steel during wear test.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Tungsten on Dry Sliding Wear Behaviour of Sintered/Hot Extruded P/M Alloy Steels (Fe-C-W-Ti)

et al. 2017

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In the present scenario, Powder Metallurgy (P/M) is an established manufacturing process used to make components of complex geometries with high strength and tolerances by using incredible materials which are difficult to melt or form by other processes. The mechanical properties and microstructures will determine the component characteristic dependent on the final obtained density of sintered P/M alloy steels. An attempt has been made to investigate the dry sliding wear behaviour of sintered/hot extruded P/M alloy steels with Fe-1C as base material, W (Tungsten) and Ti (Titanium) as an alloying element. The wear test was carried out by using a pin-on-disc tribometer (ASTM G99) against EN 38 steel disc (HRC 60) with a constant sliding speed of 2m/s at normal loads of 30, 50 and 70N respectively. The microstructure of the as-sintered P/M alloy steels reveals the ferritic-pearlite structure whereas for hot extruded alloy steels the microstructure shows a combination of Widmanstatten type ferrite, pearlite and bainite. From the microstructure the presence of WC (tungsten carbide) embedded with Ti in the grain boundaries offers greater wear resistance of the hot extruded P/M alloy steels. The common wear mechanism observed for hot extruded alloy steels is Delamination wear.

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Section: Dry Sliding Wear Behaviour Of Sintered/hot Extruded P/m Steementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Tungsten on Dry Sliding Wear Behaviour of Sintered/Hot Extruded P/M Alloy Steels (Fe-C-W-Ti)

et al. 2017

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“…Powder metallurgy (PM) technique is experiencing growth and is replacing traditional metal-forming operations because of its low relative energy consumption, high material utilization, and low capital cost [1]. Therefore some PM steels with high sintered density as well as high wear resistance have found wide application in the automotive industry, in engine and transmission systems, mainly for wear loaded components, such as cam lobes etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Mechanical Properties of Fe-Based Metal Matrix Composites by Warm Compaction for Gear Production

Gün

Şi̇mşi̇r

2017

Acta Phys. Pol. A

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In this study, mechanical behavior of iron-based (Fe-0.8C-2.0Cu-4.5Ni-1.8Mo-1.0B (wt.%)) metal matrix composite synthesized by powder metallurgy was investigated for gear production. Metal matrix composite has been produced by warm compaction, followed by free sintering in controlled Ar gas atmosphere. Green composite was produced under pressure of 650 MPa at 160• C. The green products have been sintered at various temperatures (1050, 1150 and 1250• C) and for various time periods (30, 60 and 90 min). Mechanical tests (hardness and wear tests) have been conducted. The microstructure and the worn surfaces of the samples have been examined under scanning electron microscope and analyzed by energy dispersive spectroscopy and X-ray diffraction method. The results have shown that hardness and wear resistance of the samples increase with increasing sintering temperature and time. Effect of sintering temperature is greater than that of sintering time. The highest hardness and wear resistance have been obtained in the composite sample produced at 1250• C for 90 min.

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“…The powder metallurgy process is replacing traditional metal forming operations because of its low relative energy consumption, high material utilization, and low capital cost 1 . Also the uniformity in reinforcement distribution can be achieved by the powder metallurgy process to produce porous structures and this improves structural properties and also reproducibility 2,3 .…”

Section: Introductionmentioning

confidence: 99%

Workability studies on Al+2.5%TiO2+Gr powder metallurgy composites during cold upsetting

Ravichandran¹,

Sait²,

Anandakrishnan

2014

Mat. Res.

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Al+2.5%TiO 2 +Gr composites were synthesized through powder metallurgy technique and their workability behavior has been studied under tri-axial stress state condition. The powders were compacted using suitable punch and die in 400 kN hydraulic press and sintered at a temperature of about 590 °C for a period of 3 hours in an electric muffle furnace. The sintered preforms were characterized by XRD and SEM analysis. Then the preforms were subjected to incremental compressive loading of 10 kN until the cracks found at the free surface. The true axial stress (s z ), true hoop stress (s ө ), true hydrostatic stress (s m ) true effective stress (s eff ), formability stress index (β) and stress ratio parameters [(s z /s eff ), (s m /s eff ), (s ө /s eff )] were calculated for all the preforms and these are correlated with the true axial strain (e z ). It is inferred that, the addition of TiO 2 and Gr to the Al matrix material increases the stress ratio parameters and formability stress index (β). A hardness test was also conducted for sintered and cold forged preforms and results are reported.

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Dry sliding wear behavior of molybdenum alloyed sintered steels

Cited by 62 publications

References 7 publications

Influence of Tungsten on Dry Sliding Wear Behaviour of Sintered/Hot Extruded P/M Alloy Steels (Fe-C-W-Ti)

Influence of Tungsten on Dry Sliding Wear Behaviour of Sintered/Hot Extruded P/M Alloy Steels (Fe-C-W-Ti)

Investigation of Mechanical Properties of Fe-Based Metal Matrix Composites by Warm Compaction for Gear Production

Workability studies on Al+2.5%TiO2+Gr powder metallurgy composites during cold upsetting

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