Microstructures and Wear Properties of Al Matrix Composites Fabricated by Two Different Processes

2006 ◽  
Vol 510-511 ◽  
pp. 202-205 ◽  
Author(s):  
Yeong Sik Kim ◽  
Kyun Tak Kim ◽  
Seon Jin Kim ◽  
Jae Dong Kim
Keyword(s):  
Wear Behavior ◽  
Normal Load ◽  
Dry Sliding Wear ◽  
Matrix Composites ◽  
Wear Properties ◽  
Aisi 52100 ◽  
Sic Particulates ◽  
Al Matrix Composites ◽  
Micro Analysis ◽  
Al Matrix

SiC particulates reinforced metal matrix composites (MMCs) were fabricated by two different processes, pressureless infiltration and thermal spray. 10, 20, 30, 40 and 50 vol% SiC reinforced Al matrix composites (AMCs) were fabricated by these two processes. For these AMCs, dry sliding wear tests were performed under a normal load of 3 N, a constant sliding speed of 0.2 m/s and sliding distance of 1000 m against an AISI 52100 ball. Microstructures and wear behavior were studied by means of scanning electron microscope (SEM) and electron probe micro-analysis (EPMA).

High-Temperature Wear Mechanisms of a Severely Plastic Deformed Al/Mg2Si Composite

2018 ◽  
Vol 141 (3) ◽  
Author(s):  
Mahsa Ebrahimi ◽  
Abbas Zarei-Hanzaki ◽  
A. H. Shafieizad ◽  
Michaela Šlapáková ◽  
Parya Teymoory
Keyword(s):  
Plastic Deformation ◽  
Room Temperature ◽  
Wear Behavior ◽  
Normal Load ◽  
Aluminum Matrix ◽  
Hardened Layer ◽  
Dry Sliding Wear ◽  
Wear Properties ◽  
Wear Performance ◽  
Processed Material

The present work was primarily conducted to study the wear behavior of as-received and severely deformed Al-15%Mg2Si in situ composites. The severe plastic deformation was applied using accumulative back extrusion (ABE) technique (one and three passes). The continuous dynamic recrystallization (CDRX) was recognized as the main strain accommodation and grain refinement mechanism within aluminum matrix during ABE cycles. To investigate the wear properties of the processed material, the dry sliding wear tests were carried out on both the as-received and processed samples under normal load of 10 and 20 N at room temperature, 100 °C, and 200 °C. The results indicated a better wear resistance of processed specimens in comparison to the as-received ones at room temperature. In addition, the wear performance was improved as the ABE pass numbers increased. These were related to the presence of oxide tribolayer. At 100 °C, the as-received material exhibited a better wear performance compared to the processed material; this was attributed to the formation of a work-hardened layer on the worn surface. At 200 °C, both the as-received and processed composites experienced a severe wear condition. In general, elevating the temperature changed the dominant wear mechanism from oxidation and delamination at room temperature to severe adhesion and plastic deformation at 200 °C.

Comparison of effect of SiC and MoS2 on wear behavior of Al matrix composites

2019 ◽  
Vol 29 (6) ◽  
pp. 1169-1183 ◽  
Author(s):  
Mohammad ROUHI ◽  
Mohammad MOAZAMI-GOUDARZI ◽  
Mohammad ARDESTANI
Keyword(s):  
Wear Behavior ◽  
Matrix Composites ◽  
Al Matrix Composites ◽  
Al Matrix

Microstructural characterization and wear properties of ultra-dispersed nanodiamond (UDD) reinforced Al matrix composites fabricated by ball-milling and sintering

2011 ◽  
Vol 46 (13) ◽  
pp. 1521-1534 ◽  
Author(s):  
H Kaftelen ◽  
ML Öveçoğlu
Keyword(s):  
Wear Resistance ◽  
Ball Milling ◽  
Microstructural Characterization ◽  
Matrix Composites ◽  
X Ray Diffraction ◽  
Wear Properties ◽  
X Ray ◽  
Al Matrix Composites ◽  
Al Matrix Composite ◽  
Al Matrix

Elemental aluminum (Al) powders reinforced with 1–10 wt% of ultra-dispersed nanodiamond (UDD) powders were ball-milled in a SpexTM Mixer/Mill between 0 and 120 min followed by consolidation and sintering. X-ray diffraction analyses on the ball-milled powders revealed only α-Al peaks, whereas Al4C3 phase was identified along with α-Al in all sintered composites. Increasing the addition of nanodiamond to Al-matrix resulted in improved hardness of both ball-milled and sintered composites. The wear resistances of the Al-UDD composites were significantly improved with increasing UDD contents. Under similar load and sliding conditions, the wear resistance of Al matrix composite containing 10 wt% nanodiamond enhances about 40 times when compared with unreinforced aluminum.

Unlubricated Sliding Wear of TiN Particle Reinforced Si3N4 Matrix Composites Against AISI-52100 Steel Ball

2007 ◽  
Vol 280-283 ◽  
pp. 1327-1330
Author(s):  
Chien Cheng Liu ◽  
Jow Lay Huang
Keyword(s):  
Friction And Wear ◽  
Wear Behavior ◽  
Matrix Composites ◽  
Wear Properties ◽  
Low Friction ◽  
Friction Coefficients ◽  
A Value ◽  
Aisi 52100 ◽  
Ceramic Components ◽  
Aisi 52100 Steel

The effects of TiN addition to Si3N4 on its mechanical and wear properties were investigated. The size and content of TiN particles were found having effects on the strength and toughness of Si3N4-based composites. The friction and wear behavior of Si3N4 based composites against AISI-52100 steel were investigated in the ball -on- disc mode in a non-lubrication reciprocation motion. It has been found that under the conditions used all the ceramic components exhibited rather low friction and wear coefficients. For monolithic silicon nitride materials, high friction coefficients between 0.6 and 0.7 and wear coefficients between 1.63 × 10-8 and 1.389 × 10-6 mm3/N.m were measured. The contact load was varied from 100 to 300 N. By adding titanium nitride, the friction coefficients was reduced to a value between 0.4 and 0.5 and wear coefficients between 1.09×10-8 and 0.32×10-6 mm3/N.m at room temperature.

FEM Prediction of Chip Morphology during the Machining of Particulates Reinforced Al Matrix Composites

2011 ◽  
Vol 188 ◽  
pp. 220-223 ◽  
Author(s):  
H. Guo ◽  
Dong Wang ◽  
Li Zhou
Keyword(s):  
Shear Failure ◽  
Cutting Speed ◽  
Chip Morphology ◽  
Element Model ◽  
Matrix Composites ◽  
Segmented Chip ◽  
Sic Particulates ◽  
Al Matrix Composites ◽  
Cutting Speeds ◽  
Al Matrix

Chip morphology and segmentation play a predominant role in determining the machinability and tool wear during the machining of SiC particulates reinforced Al matrix composites. In this paper, a 2D coupled thermo-mechanical finite element model was used for simulating the segmented chip formation at different cutting conditions. The generation of segmentation is achieved by element erase and the shear failure, as well as the continuous adaptive remeshing technical. The results show that the chip is often discontinuous at lower cutting speeds, and with the increasing of the cutting speed, the chip becomes serrated. Fundamental observations from the simulations are concluded and a guideline for further research is proposed.

scholarly journals Mechanical properties and wear behavior of fly ash particle reinforced Al matrix composites

2020 ◽  
Vol 7 (1) ◽  
pp. 016595 ◽  
Author(s):  
Akash Mayurbhai Desai ◽  
Tanay Rudra Paul ◽  
Manab Mallik
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Wear Behavior ◽  
Matrix Composites ◽  
Al Matrix Composites ◽  
Al Matrix

Mechanism of ceramic-like friction of quasicrystal reinforced Al matrix composites formed by in-situ directed energy deposition

2021 ◽  
pp. 1-27
Author(s):  
Shuo Li ◽  
Mohamed El Mansori ◽  
Qingzheng Wang ◽  
Nan Kang ◽  
Mourad Elhadrouz
Keyword(s):  
Wear Resistance ◽  
Matrix Composite ◽  
Energy Deposition ◽  
Wear Behavior ◽  
Matrix Composites ◽  
Directed Energy Deposition ◽  
Al Matrix Composites ◽  
Directed Energy ◽  
Al Matrix Composite ◽  
Al Matrix

Abstract The wear of aluminum alloy may be decreased by its reinforcement with quasicrystals prepared by melt, which in itself has good wear-resisting properties. This research paper considers the part played by a dense Al-Fe-Cr quasicrystal (QC) reinforced Al matrix composite fabricated by the directed energy deposition (DED) in reducing wear between sliding surfaces and discusses briefly some of the factors which, in practice, explain ceramic-like properties of quasicrystal including low friction and wear resistance. The hardness of reinforcement phases, QC Al91Fe4Cr5 and Al13(Fe, Cr)4, was up to ~ 91 and ~ 112 HV respectively, while the Al matrix was just ~ 70 HV. Furthermore, the reinforcement phases contributed to form the mechanical mixing layer (MML) which significantly decreased the coefficient of friction (COF) and improves the wear resistance. With the increase of load from 1N to 5N, the COF dropped from 0.82 to 0.33 because the higher load was beneficial to the formation of harder and denser MML. Through the comprehensive analysis of the wear test and worn surface, the wear behavior and mechanism of this QC reinforced Al matrix composite has been explained in detail. The results indicate that the quasicrystal reinforced Al matrix composites formed by DED is one of the promising wear-resistance materials.

Effects of Dry Sliding Conditions on Wear Properties of Al-Matrix Composites Produced by Selective Laser Melting Additive Manufacturing

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Dongdong Gu ◽  
Jiubin Jue ◽  
Donghua Dai ◽  
Kaijie Lin ◽  
Wenhua Chen
Keyword(s):  
Wear Mechanisms ◽  
Friction And Wear ◽  
Matrix Composites ◽  
Wear Properties ◽  
Long Time ◽  
Friction And Wear Properties ◽  
Al Matrix Composites ◽  
Worn Surface ◽  
Oxidation Wear ◽  
Al Matrix

The friction and wear properties of in situ Al-matrix composites prepared by selective laser melting (SLM) were evaluated on a ball-on-disk tribometer by sliding against GCr15 steel at room temperature. The influence of the applied load, sliding speed, and long-time continuous friction on the friction and wear properties of Al-matrix composites was systematically investigated. It showed that the wear rate and coefficient of friction (COF) increased when the applied load increased, due to the higher contact stress and larger extent of particle fracturing. As the sliding speed increased, the elevated rate of the formation of Al-oxide layer and the transfer of Fe-oxide layer from the counterface to the worn surface led to a significant reduction in wear rate and COF. As the sliding distance prolonged, the worn surface successively experienced the adhesive wear, the abrasive wear, the particle fracturing and crack nucleation, and the delaminated wear. The above processes were repeated on each exposed fresh surface, resulting in the fluctuation of COF. In the later stage of wear process, a large amount of oxides were produced on the worn surface, caused by the long-time accumulated frictional heat, which reduced the fluctuation of COF. The wear mechanisms of SLM-processed Al-matrix composite parts under various loads were dominated by abrasive wear and oxidation wear, whereas the predominant wear mechanisms were oxidation wear and delamination wear at different sliding speeds. For the long-time friction, all of these wear mechanisms were operational.

Sign in / Sign up

Export Citation Format

Share Document