Effects of fabrication process and coating of reinforcements on the microstructure and wear performance of Stellite alloy composites

Ning, Yunfei; Patnaik, P. C.; Liu, R.; Yao, Matthew; Wu, Xijia

doi:10.1016/j.msea.2004.08.083

Cited by 13 publications

(3 citation statements)

References 17 publications

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“…Therefore, replacement of Co 6 Mo 6 C and Co 3 Mo with Cr-rich carbides in the microstructure of the Stellite 12 þMo coating positively affected the hardness in addition to the solution hardening effect of molybdenum dissolved in the matrix. It is a well-known fact that dissolution of larger atomic sized refractory elements (such as Mo or W) in a Co-rich solid solution obstructs dislocation motion and consequently strengthens the matrix [28][29][30].…”

Section: Discussionmentioning

confidence: 99%

Sliding wear characteristics of molybdenum containing Stellite 12 coating at elevated temperatures

Motallebzadeh

Atar

Çi̇menoǧlu

2015

Tribology International

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Section: Discussionmentioning

confidence: 99%

Sliding wear characteristics of molybdenum containing Stellite 12 coating at elevated temperatures

Motallebzadeh

Atar

Çi̇menoǧlu

2015

Tribology International

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“…Presence of higher percentage Chromium (Cr) provides Stellite alloys with good magnetic and corrosion resistance properties [2,3]. Chromium acts as carbide former which offers corrosion resistance, and it plays the role of the most important strengthening element in the alloy matrix [5]. This paper deals with machining of Stellite 6 and mechanical properties of Stellite 6 are displayed below in Table 1.…”

Section: Introductionmentioning

confidence: 99%

Optimisation of the Machining of Stellite 6 PTA Hardfacing Using Surface Roughness

Hasan

Mazid

Clegg

2010

KEM

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Stellites are cobalt based super alloys. By virtue of their excellent physio-mechanical properties, stellites are highly regarded engineering materials. Stellites posses high corrosion resistance and wear resistance properties. This study investigates the Stellite deposition process and machinability of Stellite 6 deposited on steel subtrate. Stellite 6 was deposited onto a 4140 bar using a plasma transfer arc (PTA) system and machinability was assessed on the basis of surface roughness. A series of turning operations have been carried out on a conventional lathe using coated carbide inserts and surface roughness was evaluated by Stylus type Surtronic3+ instrument. The values of surface roughness were plotted against different cutting speed, feed rate and depth of cut to display the results in graphical forms. Optimal cutting regimes were established against the best values of surface roughness.

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“…[50] Thus, it was applied extensively in the deposition of coatings for wear and hightemperature applications. [46,[51][52][53] The present work was undertaken to investigate the performance of Stellite 12 coating deposited on X32CrMoV33 hot work tool steel via the PTA process under steel thixoforming conditions.…”

Section: Introductionmentioning

confidence: 99%

Thermal Fatigue Testing of Plasma Transfer Arc Stellite Coatings on Hot Work Tool Steels under Steel Thixoforming Conditions

Birol

Kayihan

2010

Metall Mater Trans A

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The thermal fatigue performance of Stellite 12 coating deposited on X32CrMoV33 hot work tool steel via the plasma transfer arc (PTA) process was investigated under steel thixoforming conditions. Stellite 12 coating has made a favorable impact on the thermal fatigue performance of the X32CrMoV33 hot work tool steel. The latter survived steel thixoforming conditions lasting much longer, for a total of 5000 cycles, when coated with a PTA Stellite 12 layer. This marked improvement is attributed to the higher resistance to oxidation and to temper softening of the Stellite 12 alloy. The Cr-rich oxides, which form during thermal cycling, provide adequate protection to high-temperature oxidation. In contrast to hot work tool steel, Stellite 12 alloy enjoys hardening upon thermal exposure under steel thixoforming conditions. This increase in the strength of the coating is produced by the formation of carbides and contributes to the superior thermal fatigue resistance of the Stellite 12 alloy. When the crack finally initiates, it propagates via the fracture of hard interdendritic carbides. The transformation of M 7 C 3 to M 23 C 6 , which is more voluminous than M 7 C 3 , promotes crack propagation.

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Effects of fabrication process and coating of reinforcements on the microstructure and wear performance of Stellite alloy composites

Cited by 13 publications

References 17 publications

Sliding wear characteristics of molybdenum containing Stellite 12 coating at elevated temperatures

Sliding wear characteristics of molybdenum containing Stellite 12 coating at elevated temperatures

Optimisation of the Machining of Stellite 6 PTA Hardfacing Using Surface Roughness

Thermal Fatigue Testing of Plasma Transfer Arc Stellite Coatings on Hot Work Tool Steels under Steel Thixoforming Conditions

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