Wear in cast titanium carbide reinforced ferrous composites under dry sliding

Surface alloying caused the improvement in the mechanical/chemical properties of near surface regions of the steels. In the present study, surface alloying treatment with boron, molybdenum, and iron on the AISI 1020 steel was realized by the technique of TIG welding. Ferrous boron, ferrous molybdenum, and Armco iron were used for surface alloying treatment. Before the treatment, ferrous alloys were ground and sieved to be smaller than 45 µm. The powders were mixed to be composed of Fe (15−x) MoxB5, where x = 1, 3, and 5 (by at.%). Prepared powders were pressed on the steel substrate and melted by TIG welding for surface alloying. Wear tests of the surface alloyed AISI 1020 steels were realized against WCCo ball using by ball-on-disk method under the loads of 2.5, 5, and 10 N at the sliding speeds of 0.1 m/s for 250 m sliding distance. Friction coecient and wear rates of the surface alloyed steel with Fe (15−x) MoxB5 alloy powder are changing between 0.30 and 0.80 and 5.86 × 10 −5 mm 3 /m to 2.52 × 10 −3 mm 3 /m depending on applied load and alloy composition, respectively.

Section: Resultsmentioning

confidence: 77%

Wear Properties of the Surface Alloyed AISI 1020 Steel with Fe_(15-x)Mo_xB₅by TIG Welding Technique

Abakay

Şen

2014

“…As shown from the gure, the increase in applied load caused the increase of wear rate for all alloy compositions. The Archard equating shows that increasing load reasoned the increase of wear rate [17]. As shown from the gure, increase in vanadium content in the alloy composition caused the decrease of the wear rate according to applied load.…”

Section: Resultsmentioning

confidence: 79%

Wear Properties of the Surface Alloyed AISI 1020 Steel with Vanadium and Boron by TIG Welding Technique

Abakay¹,

Şen²,

Şen³

2014

It is now well known that surface alloying caused improvement in the mechanical/chemical properties of near surface regions of materials. In the present study, surface alloying treatment with boron, vanadium and iron on the AISI 1020 steel was realized by the technique of TIG welding. Ferrous boron, ferrous vanadium and Armco iron were used for surface alloying treatment. Before the treatment, ferrous alloys were ground and sieved to be smaller than 38 µm. The powders were mixed to be composed of Fe15−xVxB5, where x = 1, 3, and 5 (by at.). Prepared powders were pressed on the steel substrate and melted by TIG welding for surface alloying. Coated layers formed on the steel substrate were investigated using scanning electron microscopy, X-ray diraction analysis and Vickers microhardness testers. It was shown that the surface alloyed layer has a composite structure including steel matrix and eutectic borides. Wear tests of the surface alloyed AISI 1020 steels were realized against WCCo ball using ball-on-disk method.

“…Track formed on the glass-ceramic includes some tiny groves. The wear mechanism is mild and moderate abrasive wear [10]. Fig.…”

Section: Introductionmentioning

confidence: 99%

Wear Properties of Gabbro Based Glass and Glass-Ceramic Materials

Bayrak¹

2014

Glass-ceramic materials were developed from gabbro including MgO and Al2O3 additives. Heat treatments for phase transformation from glassy matrix to glass-ceramic were carried out at 1000• C for 3 h. X-ray diraction studies conducted on the glass-ceramic samples revealed that the phases formed in the glass-ceramics were cordierite, anorthite, diopsitic augite, forsterite and andesine. Glass and glass-ceramic materials were tested for wear properties against a harder alumina counterface using by a ball-on-disc tribometer at dry sliding condition. Wear tests were realized under the loads of 2.5, 5, and 7.5 N and at the sliding speeds of 0.1, 0.2, and 0.3 m/s. Wear rate of the glass and glass-ceramics ranged from 7.324 × 10 −7 and 2.150 × 10 −3 9.971 × 10 −7 and 4.982 × 10 −5 mm 3 /m, respectively. It was shown that the crystallization treatment caused the decrease of wear rate.