Wear Resistance of Austempered Ductile Iron with Nanosized Additives

Kaleicheva, J. A.; Mishev, Valentin

doi:10.1088/1757-899x/295/1/012034

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…The role of added nanoparticles in the melt is in the changing of the graphite morphology for lamellar to vermicularis one [5], in the quantity graphite increase [6] and in the changing the substrate structure, which reflect in the increase irons' wear resistance [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanoadditives on the Wear Behavior of Spheroidal Graphite Cast Irons

Kaleicheva¹,

Mishev²,

Karaguiozova³

et al. 2017

Tribol. Ind.

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Section: Introductionmentioning

confidence: 99%

Effect of Nanoadditives on the Wear Behavior of Spheroidal Graphite Cast Irons

Kaleicheva¹,

Mishev²,

Karaguiozova³

et al. 2017

Tribol. Ind.

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“…The temperature plays a very important role in the wear rate because the velocity and load increases, temperature also increases. The wear rate increased with increasing the sliding speed and load of the test [16].The wear rate increases in each specimen with load and speed increases but wear rate decreases with changing the composition of the material (X to X 2 ). The intensive strengthening decreased during the wear process due to dynamic strain, ageing of martensite and partial transformation of the metastable retained austenite in a straininduced martensite [15].…”

Section: Impact Testmentioning

confidence: 92%

Archives of Metallurgy and Materials

Ramkumar¹,

Madhusudhanan²,

Rajendran³

2019

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The research article address, the mechanical properties such as fatigue, impact strength and tribological properties of Austempered ductile iron (ADI) has been investigated. The samples of ADI iron were austenitized at 927°C for 2 hrs and later it was under austempering process for 2 hrs at a temperature range of 240°C to 400°C. Experiments under axial loading has been carried out on three different compositions (without Ni(X), 0.22 wt % Ni (X 1 ), 0.34 wt. % Ni (X 2 ). Fabricated test bars were converted in to as per ASTM standard samples for different tests. In order to study the influence of chunky nickel morphology studies on fatigue life and impact strength were carried out on a second set of specimens without any microstructural defect. Metallurgical analyses were performed on all the samples of heat treated samples (AF -Ausferrite, MB -Mixed bainite, M -Martensite, RA -Retained Austenite and N-Nodule) were found and compared. It was found that a mean content of 22% of chunky nickel in the microstructure (with respect to total Ni content) influence considerably the fatigue and impact strength properties of the cast iron. Moreover tribological properties of the specimens were also studied under dry sliding conditions at various sliding speed and load. The wear resistance and coefficient of friction were found to increase with increase in load and sliding speed.

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“…The comparative experimental study of the wear is carried out under conditions of fixed abrasive. The wear test is carried out on a Taber Abraser machine using developed by the authors method [20]. The surface microstructure of the samples before and after the wear test is investigated by scanning electron microscope (SEM) PЭMMA 101.…”

Section: Materials and Investigation Methodsmentioning

confidence: 99%

Electroless Composite Nickel Coatings Strengthening with TiN Nanoparticles Plated on Ductile Cast Iron

Kaleicheva

Karaguiozova

2018

MSF

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Electroless nickel (Ni) and composite nickel coatings (Ni+TiN) are investigated in this study. EFFTOM -Nickel Method for electroless nickel plating is applied. Nanosized TiN particles (50nm) are used as a strengthening material. The coatings are plated on ductile cast iron samples. The wear tests of the coatings by the classic model TABER ABRASER “disc to disc” are carried out. The observation of the samples microstructure by means of an optical metallographic microscope GX41 OLIMPUS and the microhardness measurements by Knoop Method are performed. The wear resistance, the thickness and microhardness of the samples before and after thermal processing at 290°C, 6 h are defined.

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Wear Resistance of Austempered Ductile Iron with Nanosized Additives

Cited by 8 publications

References 5 publications

Effect of Nanoadditives on the Wear Behavior of Spheroidal Graphite Cast Irons

Effect of Nanoadditives on the Wear Behavior of Spheroidal Graphite Cast Irons

Archives of Metallurgy and Materials

Electroless Composite Nickel Coatings Strengthening with TiN Nanoparticles Plated on Ductile Cast Iron

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