Microstructural evolution in ultrasonically processed in situ AZ91 matrix composites and their mechanical and wear behavior

2014 ◽  
Vol 53 ◽  
pp. 475-481 ◽  
Author(s):  
Sachin Vijay Muley ◽  
Satya Prakash Singh ◽  
Piyush Sinha ◽  
P.P. Bhingole ◽  
G.P. Chaudhari
Keyword(s):  
Microstructural Evolution ◽  
Wear Behavior ◽  
Matrix Composites

Wear Properties of Metal Matrix Composite Al-Cu and Al-Cu-TiB2

2015 ◽  
Vol 819 ◽  
pp. 268-273 ◽  
Author(s):  
Ramli Rosmamuhamadani ◽  
Shamsuddin Sulaiman ◽  
Mohd Idris Shah Ismail ◽  
Mohamed Arif Azmah Hanim ◽  
Mahesh Talari
Keyword(s):  
Wear Rate ◽  
Metal Matrix ◽  
Wear Behavior ◽  
Optical Microscope ◽  
Constant Load ◽  
Matrix Composites ◽  
Wear Properties ◽  
Casting Technique ◽  
Cu Alloy

Tensile and wear properties of aluminium (Al) based metal matrix composites (MMCs) was prepared by added titanium diboride (TiB2) with in-situ technique by salt route. The salts used in this research were potassium hexafluorotitanate (K2TiF6) and potassium tetrafluoroborate (KBF4). Nanocomposite samples were prepared by casting technique associated with incorporating 3 and 6 wt.% of TiB2 into matrix of Al-6wt.%Cu. Instron and wear tests machine were used to characterize the tensile and wear Al-Cu alloys properties. Results showed that increase in TiB2 content gave the high properties of tensile and wear behavior. The study indicates that TiB2 particles have giving improvement the wear performance of the Al–6wt.%Cu alloy. For a constant load and sliding speed, the wear rate decreases as a function of amount of TiB2 in the composite. The wear rate decrease with increasing in wt.% TiB2 particles for the all loads applied. However, addition of TiB2 particle to the Al–6 wt%.Cu matrix has show the coefficient value of wear decreases regardless of applied load. Study of the wear surfaces both alloy and composites by optical microscope suggests that the improvement in wear resistance is mainly due to the formation of finer groove or debris by content of TiB2.

Microstructural Evolution of In Situ (Fe,Cr)7C3 Particles Reinforced Iron Matrix Composites

2012 ◽  
Vol 503-504 ◽  
pp. 408-411
Author(s):  
Li Bin Niu ◽  
Jing Lai Tian ◽  
Xiao Gang Wang
Keyword(s):  
Heat Treatment ◽  
Cast Iron ◽  
Cross Section ◽  
Microstructural Evolution ◽  
Gray Cast Iron ◽  
Treatment Time ◽  
Matrix Composites ◽  
Iron Matrix ◽  
Metallurgical Bonding

A kind of (Fe,Cr)7C3particles reinforced iron matrix composite was prepared by metallurgical bonding between Cr wires and gray cast iron at 1200°C with subsequent heat treatment. The obtained composites were comparatively characterized by XRD, SEM and microhardness tests. The results showed that the composites mainly consisted of α-Fe matrix and the reinforcements of particle bundles, which include (Fe,Cr)7C3 carbides and γ-Fe. The cross-section of the reinforcements gradually increase with heat treatment time, and the microstructures change from eutectic to hypoeutectic, the morphologies of the reinforcements present chrysanthemum-shaped, granular and intercrystalline eutectics.

The Oil Lubricated Sliding Wear Behavior of In Situ TiB2 Partical-Reinforced Al-10Sn Matrix Composites

2010 ◽  
Vol 97-101 ◽  
pp. 789-792 ◽  
Author(s):  
Guo Ming Cui ◽  
Xing Xia Li ◽  
Jian Min Zeng
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Testing Machine ◽  
Matrix Alloy ◽  
Wear Testing ◽  
Synthesis Process ◽  
Matrix Composites ◽  
Tib2 Particles ◽  
Lubricated Sliding

Al-10Sn matrix composites reinforced by TiB2 particles were fabricated by Mixed Salt Reaction in situ synthesis process. The oil lubricated sliding wear tests of composites and matrix alloy were conducted on a small thrust ring versus disc wear testing machine at room temperature under different applied loads and the wear surfaces were observed using SEM. The results indicate that the coefficient of friction, friction temperature, and wear weight loss increase with the increase of applied loads, but compared with matrix alloy, the composites exhibit better anti-friction property and higher wear resistance. The analysis of wear surface suggests that light ploughing is predominant for composites and matrix alloy at low loads, and ploughing is still predominant for composites at high loads, but adhesion and delamination are predominant for matrix alloy at high loads

scholarly journals Study on the Microstructure and Wear Behavior of In-Situ Al3Ti/Al Composites Under Induction Heating

2021 ◽  
Author(s):  
Yuting YAN ◽  
Libin NIU ◽  
Anwen ZHANG ◽  
Chengxin LIU ◽  
Zhidong FAN ◽  
...  
Keyword(s):  
Induction Heating ◽  
Wear Behavior ◽  
Pure Aluminum ◽  
Initial Position ◽  
Synthesis Methods ◽  
Matrix Composites ◽  
Particle Spacing ◽  
The Matrix ◽  
Al Matrix Composites

In the study, Ti fiber (200 μm, 99.8 wt.%) and pure aluminum (99.6 wt.%) were respectively used as the reaction source and matrix to prepare Al-based composites by in-situ synthesis methods. During the stage of preparing the preform, Ti fibers were fixed in the matrix at equal intervals to pre-control the initial position of the product. The preform was heated in an induction heating device finally, at the same time, parameter combinations of different frequencies and currents were applied to promote the in-situ reaction between Al-Ti, thereby the Al matrix composites reinforced by Al3Ti were obtained. The phase composition, microstructure and wear resistance of the composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and wear testers. The results show that when the frequency and current are 5 kHz and 15 A respectively, the Ti fiber is completely reacted, and the product is the isometric Al3Ti with a size of 1 – 2 μm and a particle spacing of about 5 μm, reaching the optimal microstructure under all parameters. Under the condition of a load of 9.8 N, the wear rate of the composites at 5 kHz and 15 A is 2.325 mg/mm2, indicating the best values in this experiment.

Study on Titanium Carbide Particles Reinforced High Manganese Steel Composite

2012 ◽  
Vol 557-559 ◽  
pp. 232-235 ◽  
Author(s):  
Jing Wang ◽  
Si Jing Fu ◽  
Shu Yong Jiang ◽  
Hong Cheng
Keyword(s):  
Wear Behavior ◽  
Manganese Steel ◽  
Dry Sliding Wear ◽  
Steel Matrix ◽  
Matrix Composites ◽  
High Manganese ◽  
High Manganese Steel ◽  
Pin On Disc ◽  
Steel Composite

High manganese matrix composite, reinforced by TiC particles, was synthesized in situ by means of conventional powder metallurgy route. The microstructure was investigated by means of Scanning electron microscopy. Pin-on-disc dry sliding wear tests had been carried out to study the wear behavior of TiC-reinforced high manganese steel matrix composites. The results show that TiC carbides are distributed uniformly in the composite. The abrasive wear resistance of the composites is higher than that of the unreinforced high manganese steel.

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