scholarly journals Design of Wear-Resistant Diecast AlSi9Cu3(Fe) Alloys for High-Temperature Components

Metals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 55 ◽  
Author(s):  
Giulio Timelli ◽  
Alberto Fabrizi ◽  
Simone Vezzù ◽  
Alessandro De Mori
Keyword(s):  
High Temperature ◽  
High Hardness ◽  
Wear Resistant ◽  
Fe Alloys ◽  
High Temperature Components ◽  
Alloy Softening ◽  
Pin On Disk ◽  
Iron Manganese ◽  
Image Analysis Techniques ◽  
Wear Tests

Type AlSi9Cu3(Fe) alloy has been modified by alloying with iron, manganese, and chromium elements to develop wear-resistant diecast hypoeutectic Al–Si–Cu alloys that can be applied for high-temperature applications. Several alloys have been produced by varying iron, manganese, and chromium levels (0.80, 1.00, 1.20 wt.% for Fe; 0.25, 0.40, 0.55 wt.% for Mn, and 0.06, 0.10 wt.% for Cr). Brinell hardness measurements and pin-on-disk wear tests have been conducted from room temperature up to 200 °C. The microstructural changes that occurred with the different alloying levels have been quantitatively examined by metallographic and image analysis techniques. The results showed how the increasing content of the Fe, Mn, and Cr promoted the precipitation of both primary and secondary Fe-enriched particles, mainly with polyhedral, blocky, and star-like morphologies. These compounds showed high hardness that is not affected by chemical composition and morphology variation. At high temperatures, the diecast alloys always showed lower average hardness and wear resistance, especially at 200 °C; however, a greater amount of Fe-rich particles can compensate the alloy softening.

Wear Resistant Amorphous PVD B-N-C Films for Tribological Applications

1996 ◽  
Vol 441 ◽  
Author(s):  
O. Knotek ◽  
E. Lugscheider ◽  
C. Barimani ◽  
C. W. Siry
Keyword(s):  
European Community ◽  
Coefficient Of Friction ◽  
High Hardness ◽  
Wear Resistant ◽  
Ion Plating ◽  
Wear Protection ◽  
Pin On Disk ◽  
Reactive Mode

AbstractAmorphous B-N-C films with a variety of properties were deposited by PVD-magnetronsputter-ion-plating. Compared to nonconductive reactive r.f. BN-targets the semiconductive behaviour of specially produced B4C-targets permitted a d.c. reactive or non-reactive mode of deposition. These films are characterized by high hardness with decreased coefficient of friction. A tribological evaluation by modified pin-on-disk outline the wear protection effects in tribosystems with metal counter part. This work was partially financed by the Commission of the European Community under Brite/EuRam contract BRE2-CT93-0451.

The Influence of the Technical Parameters on the Quality of Engineering Ceramics by Abrasive Waterjet

2013 ◽  
Vol 416-417 ◽  
pp. 1689-1692
Author(s):  
Feng Lian Zhang ◽  
Jing Zhu
Keyword(s):  
High Temperature ◽  
High Hardness ◽  
Abrasive Waterjet ◽  
Engineering Ceramics ◽  
Wear Resistant ◽  
Technical Parameters ◽  
Machining Quality ◽  
Conventional Machining

Engineering Ceramics is a inorganic nonmetal material, which is sintered at high-temperature. ceramics have promising potential as high-temperature strength.erosion-resistant, wear-resistant and hot impact-resistant.However, because they have high hardness and brittleness as well as nonconductive, it is very difficult to machine them using conventional machining. Their use-area is restricted. At presently, the machining technology of Engineering Ceramics by abrasive waterjet become more and more important for humankind. In this paper, the influence of technical parameters on machining quality has been studied and analyzed. A better changing method of technical parameters is given.

scholarly journals Tribological investigation of multilayer CrN/CrCN/TaN films deposited by close field unbalanced magnettron sputtering

2019 ◽  
Vol 58 (1) ◽  
pp. 271-279 ◽  
Author(s):  
Erkan Bahce ◽  
Nese Cakir
Keyword(s):  
Wear Test ◽  
High Hardness ◽  
Scratch Test ◽  
Adhesion Properties ◽  
Cocrmo Alloy ◽  
Unbalanced Magnetron Sputtering ◽  
Unbalanced Magnetron ◽  
Pin On Disc ◽  
Pin On Disk ◽  
Wear Tests

AbstractCrN/CrCN/TaN multilayer films were deposited onto the CoCrMo alloy substrates at different number layers as two, four and 8 layers by close-field unbalanced magnetron sputtering method. Microstructure and the tribo-logical properties of the films were characterized by XRD, SEM, pin-on-disk wear test, scratch test, micro hardness. CrN/CrCN/TaN multilayer coatings exhibited good adhesion properties on the CoCrMo alloy substrate. A very high hardness value of 60 GPa was obtained for 8 multilayered coating. As a result of the pin-on-disc wear tests, it was found that the tribological properties of the CoCrMo alloy were enhanced by coating its surface with this architecture by using close-field unbalanced magnetron system with used parameters.

Using VPr11-40N Brazing Powder as a Wear-Resistant Cladding for GTE Blade Airfoils

2018 ◽  
Vol 284 ◽  
pp. 1257-1262
Author(s):  
V.G. Klimov ◽  
S.S. Zhatkin ◽  
A.V. Kogteva
Keyword(s):  
High Temperature ◽  
Abrasive Wear ◽  
Laser Cladding ◽  
Substrate Material ◽  
Intermetallic Alloy ◽  
Homogeneous Structure ◽  
Wear Resistant ◽  
Heat Resistant ◽  
Wear Tests ◽  
Better Than

This paper dwells upon using the VPr11-40N high-temperature brazing powder as a cladding applied by a laser to restore the height of the airfoil of a turbostarter blade in an NK-12MP turboprop, while also making the edge more wear-resistant. It has been found out that laser cladding generates a highly homogeneous structure with lesser gradient of hardness over the clad area compared to furnace brazing. Abrasive-wear tests have shown that this braze resists abrasive wear better than the blade substrate material (superalloy JS6К heat-resistant intermetallic alloy).

REYNOLDS 390 and A390

Alloy Digest ◽  
1971 ◽  
Vol 20 (8) ◽  
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
High Hardness ◽  
Heat Treating ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Temperature Performance

Abstract REYNOLDS 390 and A390 are hypereutectic aluminum-silicon alloys having excellent wear resistance coupled with good mechanical properties, high hardness, and low coefficients of expansion. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, and machining. Filing Code: Al-203. Producer or source: Reynolds Metals Company.

XAR 450 Premium

Alloy Digest ◽  
2018 ◽  
Vol 67 (12) ◽  
Keyword(s):  
High Temperature ◽  
Structural Steel ◽  
Tensile Properties ◽  
Thick Plate ◽  
Heat Treating ◽  
Wear Resistant ◽  
Temperature Performance

Abstract XAR 450 Premium is a special wear-resistant structural steel as thick plate that is water quenched and tempered. These wear resistant materials last at least five times longer than conventional steels due to their extreme hardness and toughness. This datasheet provides information on composition, microstructure, hardness, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-833. Producer or source: ThyssenKrupp Steel Europe AG.

XAR 400 Premium

Alloy Digest ◽  
2018 ◽  
Vol 67 (11) ◽  
Keyword(s):  
High Temperature ◽  
Structural Steel ◽  
Tensile Properties ◽  
Thick Plate ◽  
Heat Treating ◽  
Wear Resistant ◽  
Temperature Performance

Abstract XAR 400 Premium is a special wear-resistant structural steel as thick plate that is water quenched and tempered. These wear-resistant materials last at least five times longer than conventional steels due to their extreme hardness and toughness. This datasheet provides information on composition and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-830. Producer or source: ThyssenKrupp Steel Europe AG.

DURATECH 30

Alloy Digest ◽  
2006 ◽  
Vol 55 (3) ◽  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
High Hardness ◽  
Heat Treating ◽  
Powder Metal ◽  
Temperature Performance ◽  
Very High

Abstract DuraTech 30 is a superhigh-speed steel evolved from the ASTM M3-2 composition, but with added cobalt. The exotic composition offers improved toughness and very high hardness. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on high temperature performance and wear resistance as well as heat treating, machining, and powder metal forms. Filing Code: TS-629. Producer or source: Timken Latrobe Steel.

On data dispersion in pin-on-disk wear tests

Wear ◽  
2002 ◽  
Vol 252 (11-12) ◽  
pp. 1001-1006 ◽  
Author(s):  
S Guicciardi ◽  
C Melandri ◽  
F Lucchini ◽  
G de Portu
Keyword(s):  
Pin On Disk ◽  
Wear Tests
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