The role of debris in the fretting wear of a SiC reinforced aluminium alloy matrix composite

Hu, Qin; McColl, I.R.; Harris, S.J.; Waterhouse, R.B.

doi:10.1016/s0043-1648(00)00461-0

Cited by 35 publications

(21 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another important method used to improve the mechanical properties of the alloy is to compose stable in situ intermetallic phases in the structure [6][7][8]. In the production of aluminum metal matrix composites (AMMC), which are defined as materials having superior tribological properties, the most common materials used as reinforcement phase are SiC [9][10][11][12][13][14], Al 2 O 3 [15,16], TiB 2 [17,18] and TiC [19]. In the production of many AMMC materials, ex situ techniques are preferred (supplements made to the matrix ex situ in order to increase strength).…”

Section: Introductionmentioning

confidence: 99%

Wear Behaviour of A356/TiAl3 in Situ Composites Produced by Mechanical Alloying

Çam

Demir

Özyürek

2016

Metals

View full text Add to dashboard Cite

Abstract:In this study, the effects of in situ TiAl 3 particles on dry sliding wear behavior of A356 aluminum alloy (added Ti) composites were investigated. The wear samples were prepared by adding different amounts of Ti (4%, 6%, and 8%) into A356 powder alloy by mechanical alloying. The mechanically alloyed powders were cold pressed at 600 MPa and sintered 530˝C for 1 h in argon atmosphere and cooled in the furnace. After the sintering process, the samples were characterized. The results show that AlTi and TiAl 3 intermetallic phases were formed and their amount increased depending on the amount of Ti added into A356 powder alloy. Out of the samples sintered with different titanium amounts (1 h at 530˝C), the highest hardness value and, accordingly, the lowest wear amount, were observed in the alloy containing 8% Ti.

show abstract

Section: Introductionmentioning

confidence: 99%

Wear Behaviour of A356/TiAl3 in Situ Composites Produced by Mechanical Alloying

Çam

Demir

Özyürek

2016

Metals

View full text Add to dashboard Cite

show abstract

“…One generally accepted idea lies in the formation of a plastically deformed layer at the surface since the early stages of friction. Called Mechanically Mixed Layer (MML) by Rigney [9] and others [10,11], as well as Tribologically Transformed Structure (TTS) by Sauger et al [12][13][14], this layer is invariably characterized by its fine grain size (in the nanometer range), its high hardness and its chemical composition close to the bulk material. If the authors generally agree on the layer's main characteristics, the mechanisms responsible for its initiation are still controversial.…”

Section: Introductionmentioning

confidence: 99%

“…This, in turn, encourages transfer and a complex mixing process takes place at the interface leading to the formation of a MML, from which debris particles are generated. In several studies [10,11], MMLs are reported to exhibit evidence of intimate mixing of the two contacting parts and of the environmentally active components such as oxygen or nitrogen. In his studies on several metallic alloys under fretting solicitations, Sauger [12,13] observed similar features but rejected the roles of oxygen and of the counterpart material in the formation of the TTS.…”

Section: Introductionmentioning

confidence: 99%

High temperature fretting wear of a Ti alloy/CuNiIn contact

Mary

Fouvry

Martin

et al. 2008

Surface and Coatings Technology

View full text Add to dashboard Cite

“…In this model, the environment can interact and its chemical species (oxygen, carbon or nitrogen) can mix mechanically to form the nanocomposite structure. Other authors reported the presence of MMLs features and evidences of intimate mixing between the two contacting parts [13,14], but the role of tribochemistry and of environmental elements has never been clearly demonstrated.…”

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

View full text Add to dashboard Cite

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.

show abstract

The role of debris in the fretting wear of a SiC reinforced aluminium alloy matrix composite

Cited by 35 publications

References 21 publications

Wear Behaviour of A356/TiAl3 in Situ Composites Produced by Mechanical Alloying

Wear Behaviour of A356/TiAl3 in Situ Composites Produced by Mechanical Alloying

High temperature fretting wear of a Ti alloy/CuNiIn contact

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

Contact Info

Product

Resources

About