Sliding wear behaviour of a liquid nitrocarburised precipitation-hardening (PH) stainless steel

Pantazopoulos, G.; Papazoglou, T.P.; Psyllaki, P.; Sfantos, G.K.; Αντωνίου, Σταμάτης; Papadimitriou, K.; Sideris, J.

doi:10.1016/j.surfcoat.2004.01.015

Cited by 22 publications

(12 citation statements)

References 13 publications

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“…All these events can produce deformation of the involved components and tolerance variation with the consequent seizure of the system. Several studies have been carried out on the wear resistance of precipitation hardening stainless steel, [8][9][10][11]. They all conclude that these steels do not show high wear resistance, but it can be improved by nitriding or nitrocarburising process which produce a very hard thin superficial layer.…”

Section: Discussionmentioning

confidence: 99%

Wear surface damage of a Stainless Steel EN 3358 aeronautical component subjected to sliding

Felli

Brotzu

Vendittozzi

et al. 2012

Frattura Ed Integrità Strutturale

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The present paper describes the failure analysis of an aircraft component subjected to several episodes of in service failure, resulted in loss of the aircraft safety. Modern aircrafts are provided with mechanical systems which have the task to open not pressurized hatches during landing. The components of such systems are subject to considerable mechanical stresses in harsh environment (presence of moisture and pollutants, significant and sudden temperature variations). The system is constituted by a sliding piston, a related nipple and by a locking system consisting of 4 steel spheres which are forced into a countersink machined on the piston when the hatches is open. The whole system is activated by a preloaded spring. The machined parts, nipple and piston, are made of EN3358 steel (X3CrNiMo13-8-2), a precipitation hardening stainless steel with very low content of carbon often used in the aerospace. The samples provided by the manufacturer present different types of damage all referable to phenomena relative to the sliding of the piston inside the nipple. The present paper describes the different damage observed and the microstructure of the material, then are reported the results obtained from the characterization of the material of the samples by means of optical and electronic microscopy, carried out to define the mechanisms involved in the system seizure. In order to define the primary cause of failure and to propose solutions to be adopted, also analyzing the criticality of using this PH stainless steel for this application, the results of different tests were compared with system design and working data.

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Section: Discussionmentioning

confidence: 99%

Wear surface damage of a Stainless Steel EN 3358 aeronautical component subjected to sliding

Felli

Brotzu

Vendittozzi

et al. 2012

Frattura Ed Integrità Strutturale

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“…are presented in the relevant literature, see also Refs. [3][4][5][6]. Detailed SEM observations (Fig.…”

Section: Investigation Findingsmentioning

confidence: 99%

Failure Mechanisms of an Automobile Clutch Assembly Cast Iron Pressure Plate

Psyllaki

Pantazopoulos²,

Karaiskos

2011

J Fail. Anal. and Preven.

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The present study is focused on the failure mechanisms of an automobile clutch disc/pressure plate assembly due to abnormal operation of a passenger vehicle. Terminal malfunction of the part took place about one year after an accidental overloading incident. This component operates under sliding friction conditions, during which the pressure plate is pressed against the clutch disc with normal load that varies in a non-predictable manner, depending on the driving conditions. Commonly, the clutch disc is considered as ''consumable'' part that can be replaced when malfunction occurs, whilst the metallic pressure plate is considered to remain intact. However, in this particular case, visual inspection, macro-examination and microscopic observation using principally light and scanning electron microscopy of such a cast iron pressure plate revealed its severe long-term progressive failure, through extensive deep grooving and oxidation of the surface and the development of subsurface shear cracks.

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“…Maraging steels have been used in the past for a variety of different applications such as aerospace applications, tools, bearings, medical and dental equipment [1][2][3]. High temperature precipitation hardening of steels leads to the formation of different precipitate structures in the temperature range from 400 to 600°C, which have been studied previously on an assortment of different alloys [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A high temperature mechanical study on PH 13-8 Mo maraging steel

Huang

Abad

Ramsey

et al. 2016

Materials Science and Engineering: A

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a b s t r a c tHigh temperature mechanical measurements were conducted to study the effect of the dynamic precipitation process of PH 13-8 Mo maraging steel. Yield stress, ultimate tensile strength, total elongation, hardness, strain rate sensitivity and activation volume were evaluated as a function of the temperature. The dynamic changes in the mechanical properties at different temperatures were evaluated and a balance between precipitation hardening and annealed softening is discussed. A comparison between hardness and yield stress and ultimate tensile strength over a temperature range from 300 to 600°C is made. The behavior of the strain rate sensitivity was correlated with the intermetallic precipitates formed during the experiments.

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Sliding wear behaviour of a liquid nitrocarburised precipitation-hardening (PH) stainless steel

Cited by 22 publications

References 13 publications

Wear surface damage of a Stainless Steel EN 3358 aeronautical component subjected to sliding

Wear surface damage of a Stainless Steel EN 3358 aeronautical component subjected to sliding

Failure Mechanisms of an Automobile Clutch Assembly Cast Iron Pressure Plate

A high temperature mechanical study on PH 13-8 Mo maraging steel

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