The fretting wear of Ti-6Al-4v and aged inconel 718 at elevated temperatures

Hamdy, M.M.; Waterhouse, R.B.

doi:10.1016/0043-1648(81)90342-2

Cited by 48 publications

(23 citation statements)

References 7 publications

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“…In earlier work on the nickel-based alloy Inconel 718 the significant improvement in the fretting-fatigue properties as the temperature was raised successively to 280 C and 540 C was seen to be the result of the development of a glaze type oxide in the contact region [6]. The titanium alloy Tip6Al-4V, on the other hand, showed a decreasing fretting-fatigue strength at temperatures of 200, 400 and 600 C respectively, and there was no evidence of the glaze type oxide being formed.…”

Section: Discussionmentioning

confidence: 94%

“…Subsequent investigations showed that this oxide on the nickel alloy resulted in low friction and low wear. However, the titanium alloy Ti-6A1-4V did not behave in the same way and coefficients of friction and wear rates remained moderately high [7]. This was reflected in high temperature fretting fatigue tests in which the fretting fatigue strength progressively fell as the temperature was raised to 600°C [S].…”

Section: Introductionmentioning

confidence: 99%

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The Fretting Fatigue Behaviour of the Titanium Alloy Imi 829 at Temperatures Up to 600°c

Hamdy

Waterhouse

1982

Fatigue &Amp; Fracture of Engineering Materials &Amp; Structures

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The alloy IMI 829 is very sensitive to fretting fatigue damage at 20°C but its fretting fatigue strength increases as the temperature is raised to 600°C due to the formation of a glaze type oxide. Failure occurs by cracking of the glaze as a result of local creep. These cracks propagate into the bulk material. Local creep results from increased stresses in the fretting contact region, frictional heating, and preferential removal of alloying elements into the oxide film leading to reduced creep properties.

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Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

The Fretting Fatigue Behaviour of the Titanium Alloy Imi 829 at Temperatures Up to 600°c

Hamdy

Waterhouse

1982

Fatigue &Amp; Fracture of Engineering Materials &Amp; Structures

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“…In the last few decades, several authors have investigated the degradation mechanisms of Ti alloys under fretting. Early in the 1980s, Hamdy and Waterhouse reported the formation of a glaze layer at elevated temperature on Ti-6Al-4V [2]. Later, Blanchard et al [3] and Fayeulle et al [4], focussed their studies on the transformation of Ti alloys under fretting.…”

Section: Introductionmentioning

confidence: 97%

Tribochemistry of a Ti Alloy Under Fretting in Air: Evidence of Titanium Nitride Formation

Mary¹,

Mogne²,

Beaugiraud³

et al. 2009

Tribol Lett

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The present investigation focuses on the tribological transformation occurring on a Ti alloy (Ti17) under fretting in air. Several fretting wear tests were performed on a large scale punch on plane configuration (two types of planes tested: bare Ti6242 and CuNiIn-coated Ti6242) at several temperatures from ambient up to 450°C. In all the cases, two zones were identified on the scars: a lateral oxidized rim and a highly deformed region at centre. Metallurgical observations revealed similarities with Tribologically Transformed Structure (TTS), previously observed on various Ti alloys. In the framework of this article, careful analyses were conducted (EDX, DRX, XPS, HRTEM and EFTEM) in order to identify the nature and chemistry of this transformed layer. Results demonstrated the formation of a new phase, nanocrystalline, identified as TiO x N y . The high content of nitrogen found in the TTS indicated its ability to penetrate inside the contact and react with titanium. At 50 lm under the surface, a FIB preparation enabled the observation in TEM of N-rich lamellae (TiO x N y ) in the Ti (a) matrix. Two models were suggested to explain this tribochemical reaction under fretting.

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“…Stott et al [8] also studied Fe-12% Cr alloys within the temperature range of 300-600°C. Hamdy and Waterhouse [9] experimented wear characteristics of Ti-6Al-4V alloy and aged Inconel-718. It has been reported that nickel alloy exhibited a better wear resistance than titanium alloy above 280°C with the aid of lubricous nickel oxide formation.…”

Section: Introductionmentioning

confidence: 99%

Friction and Wear Characteristics of Haynes 25, 188, and 214 Superalloys Against Hastelloy X up to 540 °C

2012

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As demand for more power increases, compression ratios, and operating temperatures keep rising. High speeds combined with high temperatures make turbomachinery sealing applications even more challenging. In order to confirm sufficient service life material pairs should be tested under conditions similar to engine operating conditions. This study presents high temperature friction and wear characteristics of cobalt/nickel superalloys, Haynes 25 (51Co-10Ni-20Cr-15W), Haynes 188 (39Co-22Ni-22Cr-14W), and Haynes 214 (75Ni-16Cr-3Fe-0.5Mn) sheets when rubbed against Hastelloy X (47Ni-22Cr-18Fe-9Mo) pins. Tests are conducted at 25, 200, 400, and 540°C with a validated custom design linear reciprocating tribometer. Sliding speed and sliding distance are 1 Hz and 1.2 km, respectively. Friction coefficients are calculated with friction force data acquired from a load cell. Wear coefficients are calculated through weight loss measurements. Results indicate that Haynes 25 (H25) has the lowest friction coefficients at all test temperatures. Above 400°C, H25 and Haynes 188 (H188) exhibit the best wear resistance. Protective cobalt oxide layers are formed on the H25 and H188 at 540°C in addition to nickel, chrome, and tungsten oxides. Although, it has better oxidation resistance, Haynes 214 has relatively higher wear rates than other tested materials especially at low temperatures. However, its wear performance improves beyond 200°C.

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The fretting wear of Ti-6Al-4v and aged inconel 718 at elevated temperatures

Cited by 48 publications

References 7 publications

The Fretting Fatigue Behaviour of the Titanium Alloy Imi 829 at Temperatures Up to 600°c

The Fretting Fatigue Behaviour of the Titanium Alloy Imi 829 at Temperatures Up to 600°c

Tribochemistry of a Ti Alloy Under Fretting in Air: Evidence of Titanium Nitride Formation

Friction and Wear Characteristics of Haynes 25, 188, and 214 Superalloys Against Hastelloy X up to 540 °C

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