Wear performances of surface hardened PM steel from pre-alloyed powder

Rivolta, B.; Gerosa, R.; Silva, G.; Tavasci, A.; Engström, Ulf

doi:10.1016/j.wear.2012.04.001

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…The wear values are similar for other materials [20] even the nickel amount of raw powder was higher. Adding 1.5% chromium and 0.5% molybdenum promotes lower wear results [21].…”

Section: Discussionmentioning

confidence: 99%

Application in powder metallurgy of CVD carbon nanofibres: microstructure and mechanical properties CNF reinforced Distaloy AQ

Candela¹,

Calvo-Castañera

Maroto-Valiente

et al. 2017

Powder Metallurgy

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Powder metallurgy technique has been extended in automobile industry and other engineering applications. Competitive manufacturing costs have led to important innovations in different fields of powder metallurgy. Recently, research has been focused on reaching higher performance at a lower cost. Carbon nanostructures as carbon nanofibres (CNF) have also entered in the material science as reinforcing composites. In this study, different materials formed by low alloy steel Fe-Ni-Mo powder (Distaloy AQ) with 0.4% of graphite and 0.5% CNFs (carbon nanofibres) synthesised at 723, 773, 823 and 873 K have been studied. All the materials were compacted at 700 MPa and sintered at 1393 K and 90N 2 -10H 2 atmosphere. The influence of CNFs synthesis temperature has been analysed for its application in powder metallurgy. The microstructure, mechanical properties such as tensile strength, elongation, hardness, density and wear behaviour were investigated. The CNFs synthesised at 873 K promoted better mechanical properties.

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“…The wear values are similar for other materials [20] even the nickel amount of raw powder was higher. Adding 1.5% chromium and 0.5% molybdenum promotes lower wear results [21].…”

Section: Discussionmentioning

confidence: 99%

Application in powder metallurgy of CVD carbon nanofibres: microstructure and mechanical properties CNF reinforced Distaloy AQ

Candela¹,

Calvo-Castañera

Maroto-Valiente

et al. 2017

Powder Metallurgy

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“…Powder metallurgy allows producing of the parts from new materials, for example, as pseudoalloys from non-fusible-cast components, with controlled mechanical, magnetic, and others characteristics that cannot be achieved by any other production method [23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

A Cold-Pressing Method Combining Axial and Shear Flow of Powder Compaction to Produce High-Density Iron Parts

et al. 2019

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Highly performance methods for cold pressing (cold die forging) of preforms from iron powder with subsequent heat treatment and producing ready parts made of powder are described in the paper. These methods allow fabricating parts with smooth surfaces and improved mechanical characteristics—porosity, tensile strength. Application of the traditional design set-up with a single-axial loading is restricted to high stresses in the dies to deform the preforms that lead to cracks formation. New powder compaction schemes by applying active friction forces (shear-enhanced compaction) make it possible to unload dies and produce high-quality parts by cold pressing. The scheme allows moving the die in the direction of the material flow with a velocity that exceeds the material flow velocity.

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“…6 Plasma nitriding is a well known method for surface hardening of nitridable metals. [7][8][9] This method is one of the most effective techniques for increasing wear resistance, 10,11 fatigue strength, 12 surface hardness and corrosion resistance of industrial components. [13][14][15][16][17] In addition, it is an environmentally clean process, among its many beneficial features.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen diffusion in different microstructures of plasma nitrided CK45 steel

Foadian

Feyzi

Haghighat

et al. 2014

Materials Science and Technology

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In this study, the nitrogen diffusion in different microstructures of CK45 steel was studied. Different microstructures were achieved by different heat treatment cycles as annealing, normalising and quench tempering. After heat treatment, plasma nitriding was performed at 550°C temperature, nitriding times of 5 h, in a gas mixture containing 25 vol.-H2/75 vol.-N2 and DC pulsed plasma nitriding unit. The surface, cross-section and the thickness of diffusion and white layers of specimens were studied in terms of optical and scanning electron microscopy. Surface phases have been studied by X-ray diffraction analysis. Results showed that by normalising the samples, higher diffusion depths could be achieved and the white layer thickness would be also higher. Other results showed that core hardness of quench tempered specimens could decrease after plasma nitriding due to being subjected to nitriding process temperature.

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Wear performances of surface hardened PM steel from pre-alloyed powder

Cited by 10 publications

References 7 publications

Application in powder metallurgy of CVD carbon nanofibres: microstructure and mechanical properties CNF reinforced Distaloy AQ

Application in powder metallurgy of CVD carbon nanofibres: microstructure and mechanical properties CNF reinforced Distaloy AQ

A Cold-Pressing Method Combining Axial and Shear Flow of Powder Compaction to Produce High-Density Iron Parts

Nitrogen diffusion in different microstructures of plasma nitrided CK45 steel

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