Features of wear and friction in titanium

Пахомов, М. А.; Gorlov, D.S.; Stolyarov, V. V.

doi:10.1088/1757-899x/996/1/012017

Cited by 6 publications

(7 citation statements)

References 11 publications

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“…In particular, no qualitative differences in surface topography were observed among the worn surfaces of the course-grained and ultra fine grained Ti after wear [39]. On the other hand, despite the higher microhardness of ultra fine grained titanium, the total amount of fretting wear in this state is twice that for course-grained titanium due to the high density of high energy non-equilibrium grain boundaries [40].…”

Section: Discussionmentioning

confidence: 87%

“…According to [40], the grain boundaries are a source of defects and places of destruction, and their multiple intersections lead to increased wear. Most likely, the increase in the wear rate of the hardened surface layer of the EBAM Ti-6Al-4V sample subjected to UIT was associated with the presence of hard debris particles formed by plastic deformation of hardened surface layer.…”

Section: Discussionmentioning

confidence: 99%

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Transformations of the Microstructure and Phase Compositions of Titanium Alloys during Ultrasonic Impact Treatment Part III: Combination with Electrospark Alloying Applied to Additively Manufactured Ti-6Al-4V Titanium Alloy

Panin

Kazachenok

Круковский

et al. 2023

Metals

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Scanning electron microscopy, 3D optical surface profilometry, as well as X-ray diffraction and electron backscatter diffraction analysis were implemented for studying the effects of both ultrasonic impact treatment (UIT) and ultrasonic impact electrospark treatment (UIET) procedures on the microstructure, phase composition, as well as the mechanical and tribological properties of Ti-6Al-4V samples fabricated by wire-feed electron beam additive manufacturing. It was shown that he UIET procedure with the WC-6%Co striker enabled to deposit the ~10 µm thick coating, which consists of fine grains of both tungsten and titanium-tungsten carbides, as well as titanium oxide. For the UIET process, the effect of shielding gas on the studied parameters was demonstrated. It was found that the UIET procedure in argon resulted in the formation of a dense, continuous and thick (~20 µm) coating. After the UIET procedures in air and argon, the microhardness levels were 26 and 16 GPa, respectively. After tribological tests, wear track surfaces were examined on the as-built sample, as well as the ones subjected to the UIT and UIET procedures. It was shown that the coating formed during UIET in air had twice the wear resistance compared to the coating formed in argon. The evidence showed that the multiple impact of a WC-Co striker with simultaneous electrical discharges was an effective way to improve wear resistance of the Ti-6Al-4V sample.

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Transformations of the Microstructure and Phase Compositions of Titanium Alloys during Ultrasonic Impact Treatment Part III: Combination with Electrospark Alloying Applied to Additively Manufactured Ti-6Al-4V Titanium Alloy

Panin

Kazachenok

Круковский

et al. 2023

Metals

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“…Another significant problem occurring during the forming of titanium is the formation of sticking on the surface of tools (galling), which significantly affects the quality of manufactured products [ 138 , 139 , 140 ]. The unfavorable phenomena accompanying the SPIF and TPIF of titanium alloys can be limited by appropriate surface treatment of the tools and the use of appropriately selected technological lubricants [ 141 , 142 ]. Due to the fact that most of the lubricants used in sheet metal forming (SMF) processes belong to the group of synthetic oils, in recent years research has been conducted on replacing mineral oils with biodegradable vegetable oils [ 143 , 144 ], including those with the addition of nanopowders [ 145 , 146 , 147 ].…”

Section: Surface Qualitymentioning

confidence: 99%

Single-Point Incremental Forming of Titanium and Titanium Alloy Sheets

et al. 2021

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Incremental sheet forming of titanium and its alloys has a significant role in modern manufacturing techniques because it allows for the production of high-quality products with complex shapes at low production costs. Stamping processes are a major contributor to plastic working techniques in industries such as automotive, aerospace and medicine. This article reviews the development of the single-point incremental forming (SPIF) technique in titanium and its alloys. Problems of a tribological and microstructural nature that make it difficult to obtain components with the desired geometric and shape accuracy are discussed. Great emphasis is placed on current trends in SPIF of difficult-to-form α-, α + β- and β-type titanium alloys. Potential uses of SPIF for forming products in various industries are also indicated, with a particular focus on medical applications. The conclusions of the review provide a structured guideline for scientists and practitioners working on incremental forming of titanium and titanium alloy sheets. One of the ways to increase the formability and minimize the springback of titanium alloys is to treat them at elevated temperatures. The main approaches developed for introducing temperature into a workpiece are friction heating, electrical heating and laser heating. The selection of an appropriate lubricant is a key aspect of the forming process of titanium and its alloys, which exhibit unfavorable tribological properties such as high adhesion and a tendency to adhesive wear. A review of the literature showed that there are insufficient investigations into the synergistic effect of rotational speed and tool rotation direction on the surface roughness of workpieces.

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“…Среди чистых металлов, как объектов без фазовых превращений при комнатной и умеренно повышенной температурах, рассматриваются ГЦК металлы медь, никель, алюминий [2] и ГПУ титан [3]. Как пример более сложных объектов, рассмотрены сплавы на основе титана (интерметаллидное соединение с памятью формы TiNi и двухфазный сплав Ti Al V  .…”

Section: Introductionunclassified

“…Микроструктура титана Grade 4 в КЗ (а) и УМЗ (б) состояниях[3]. (40 мкм) и РКУП (0,4 мкм) титана Grade 4 в условиях (см.…”

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Трибологические Аспекты Наноструктурных Материалов

Столяров

2023

Physical and Chemical Aspects of the Study of Clusters, Nanostructures and Nanomaterials

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Статья посвящена обзору структурных факторов, влияющих на трибологическое поведение без смазки наноструктурных металлов и сплавов. Научное значение данной темы связано с пониманием механизмов износа и возможностью его прогнозирования при длительной эксплуатации. Особое внимание сфокусировано на влиянии размера зерен в интервале 0,01-10 мкм, как одного из наиболее важных структурных параметров. Сделан акцент на ультрамелкозернистые материалы, полученные интенсивной пластической деформации, и нанокристаллические материалы, полученные не деформационными методами напыления и осаждения. Показано, что нанокристаллические пленки на поверхности контакта являются более предпочтительными для повышения износостойкости, поскольку более устойчивы к структурно-фазовым превращениям в процессе трения. Среди чистых металлов, как объектов без фазовых превращений, рассматриваются медь, никель, алюминий и титан. Как пример более сложных объектов, представлены сплавы на основе титана (интерметаллидное соединение с памятью формы TiNi и двухфазный сплав Ti-Al-V). Кроме классической схемы трения при макроперемещении индентора на контактной поверхности, рассматривается фреттинг-трение при микроперемещении.

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Features of wear and friction in titanium

Abstract: The characteristics of friction and wear during low-frequency reciprocating motion of the indenter in commercially pure titanium with coarse and fine grains are investigated. The role of the microstructure refining and the ratio of grain size and displacement amplitude is shown.

Cited by 6 publications

References 11 publications

Transformations of the Microstructure and Phase Compositions of Titanium Alloys during Ultrasonic Impact Treatment Part III: Combination with Electrospark Alloying Applied to Additively Manufactured Ti-6Al-4V Titanium Alloy

Transformations of the Microstructure and Phase Compositions of Titanium Alloys during Ultrasonic Impact Treatment Part III: Combination with Electrospark Alloying Applied to Additively Manufactured Ti-6Al-4V Titanium Alloy

Single-Point Incremental Forming of Titanium and Titanium Alloy Sheets

Трибологические Аспекты Наноструктурных Материалов

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