The effect of titanium addition on the microstructure, mechanical and tribological properties of Ni 3 Si alloys prepared by powder metallurgy method

2019 ◽  
Vol 50 (12) ◽  
pp. 1537-1544 ◽  
Author(s):  
X. Zhang ◽  
M. Niu ◽  
C. Wu ◽  
J. Chen
Keyword(s):  
Powder Metallurgy ◽  
Tribological Properties ◽  
Powder Metallurgy Method ◽  
Titanium Addition ◽  
Mechanical And Tribological Properties

scholarly journals Investigation of graphite effect on the mechanical and tribological properties of Al 7075-SiC-graphite hybrid metal matrix composites

2020 ◽  
Vol 37 (1−2) ◽  
Author(s):  
SRIDHAR ATLA ◽  
Prasanna Lakshmi Kaujala
Keyword(s):  
Silicon Carbide ◽  
Powder Metallurgy ◽  
Tribological Properties ◽  
Metal Matrix ◽  
Ceramic Composites ◽  
Wear Behaviour ◽  
Wear Loss ◽  
Mechanical And Tribological Properties ◽  
Al 7075 ◽  
Pin On Disc

The aluminium metal matrix composite reinforced with ceramic material of Silicon carbide (SiC) has good mechanical properties. However, aluminium based ceramic composites require improvements in their lubrication and tribological properties. In this study an attempt is made in the development of a new material through powder metallurgy technique by the addition of Graphite, which acts as a solid lubricant. This work investigated the influence of graphite on the wear behaviour of Al 7075/SiC /X wt.% graphite(X=0, 5 and 10) hybrid composite. The investigation reveals the effectiveness of incorporation of graphite in the composite for gaining wear reduction. The Al 7075 (aluminium alloy 7075) reinforced with SiC –graphite were investigated. The composites were fabricated using powder metallurgy route. The microstructures, material combination, wear and friction properties were analysed by scanning electron microscopy, XRD, and pin-on-disc wear tester. The newly developed aluminium composite has significant improvements in tribological properties with a combination of 5% Silicon carbide (SiC) and 5% Graphite. The test reveals that sliding distance of 1000 m and sliding speed of 1.5 m/s with applied load of 5 N result in minimum wear loss of 0.01062g and coefficient of friction as 0.1278.

scholarly journals Physico-mechanical and Tribological Properties of Fe-Cu-Ni-Sn and Fe-Cu-Ni-Sn-VN Nanocomposites Obtained by Powder Metallurgy Methods

2019 ◽  
Vol 41 (2) ◽  
pp. 188-198 ◽  
Author(s):  
V.A. Mechnik ◽  
N.A. Bondarenko ◽  
V.M. Kolodnitskyi ◽  
V.I. Zakiev ◽  
I.M. Zakiev ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Tribological Properties ◽  
Mechanical And Tribological Properties ◽  
Powder Metallurgy Methods

scholarly journals Synthesis of Metal Matrix Composites via Powder Metallurgy Route: a Review

2020 ◽  
Vol 22 (1) ◽  
pp. 65-76 ◽  
Author(s):  
M. Meignanamoorthy ◽  
M. Ravichandran
Keyword(s):  
Powder Metallurgy ◽  
Metal Matrix Composites ◽  
Tribological Properties ◽  
Metal Matrix ◽  
Impact Resistance ◽  
Cost Effective ◽  
Vital Role ◽  
Matrix Composites ◽  
Mechanical And Tribological Properties ◽  
Aluminium Copper

AbstractPowder Metallurgy (P/M) is playing a vital role to synthesize variety of materials in the field of aerospace, automobile, ordnance, petroleum and petrochemical industries. P/M is an outstanding process to produce components with good mechanical and tribological properties such as strength, hardness, impact resistance and wear resistance. Recently metal matrix composites (MMC) replace conventional alloys because of their extraordinary characteristics. Currently Aluminium, Copper, Magnesium, Titanium and Iron have been used as matrix materials and materials like TiC, SiC, B4C, WC, Cr3C, TiO2, ZrO2, Gr, MoS2, and Si3N4 have been used as reinforcements to synthesize metal matrix composites. When compare P/M with other manufacturing methods, it offers ordered microstructure with improved physical, mechanical and tribological properties. From these, powder metallurgy could be commented as an extremely active and cost-effective method when compare with other process. This paper explains the selection suitable process parameters for synthesize MMCs using P/M technique. This paper made an attempt to present the mechanical and tribological properties of various composites fabricated through powder metallurgy technique.

scholarly journals Study on the Mechanical and Tribological Properties and the Mechanisms of Cr-Free Ni-Based Self-Lubricating Composites at a Wide Temperature Range

Metals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 268 ◽  
Author(s):  
Penglin Zhang ◽  
Gaopan Zhao ◽  
Wenzhen Wang ◽  
Bin Wang ◽  
Peiying Shi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tribological Properties ◽  
Wear Mechanisms ◽  
Room Temperature ◽  
Fracture Mechanisms ◽  
Powder Metallurgy Method ◽  
Mechanical And Tribological Properties ◽  
Lubricating Film ◽  
Ag Particles ◽  
Self Lubricating Composites

A Cr-free Ni-based self-lubricating composites with MoS2 and Ag as lubricants were fabricated by the powder metallurgy method. The microstructures were examined. The mechanical properties and tribological behaviors of the composites were evaluated from room temperature to 800 °C. The fractography was observed and the fracture mechanisms were analyzed. The morphologies and the phase compositions of worn surfaces were determined and the wear mechanisms were elaborated. The results indicate that MoS2 did not completely decompose after sintering, and the NiMoAl-MoS2-Ag composite has the best tribological properties (0.22, 1.68 × 10−5) at 800 °C. The main wear mechanisms are micro-ploughing and plastic deformation. The improvement of tribological properties was attributed to the formation of the lubricating film consisting of NiO, Mo oxides, various molybdates, and Ag particles. The reactions resulting in these compositions are proposed. The mechanical properties degrade with the rise of temperature and the addition of lubricants. Both NiMoAl and NiMoAlAg alloys exhibit micro-void accumulation fracture while the composites with MoS2 reveal intergranular fracture.

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