scholarly journals New Paradigm On The Mechanical Properties of In-Situ Formed By Al/TiB2 and Al/TiB2/Cu MMCs

2022 ◽  
Author(s):  
Rajaravi C ◽  
Gobalakrishnan B ◽  
AMALA MITHIN MINTHER SINGH A ◽  
ARUL FRANCO P ◽  
SHARUN V
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
Metal Matrix ◽  
Xrd Analysis ◽  
New Paradigm ◽  
Casting Method ◽  
Optical Micrograph ◽  
Tib2 Particles

Abstract In the current study, in-situ formed Al/6wt. % TiB2 and Al/6wt. % TiB2/4wt. % Cu Metal Matrix were investigated. Composites were made using the sir casting method, and both composites were compared. The composite is synthesized by combining two precursor salts, Potassium Hexa Fluro Titanate (KBF4) and potassium tetrafluoroborate (K2TiF6), with stoichiometric compositions corresponding to 6 percent by weight of TiB2 particles, with A356 aluminium melt at 820° C, speed 300 rpm, and holding time 30 minutes. Following that, 4wt. % Cu powder was added to the composite melt, which was then poured into the permanent mould. Mechanical properties tests such as tensile strength, hardness, and fracture toughness were carried out in accordance with ASTM guidelines. The mechanical properties of the in-situ formed Al/6wt. % TiB2/4wt. % Cu composite outperform those of the Al/6wt.% TiB2 composite and base metal. Optical micrograph and XRD analysis both confirm the presence of TiB2 and Cu particles.

Material Characterization Study on Aluminium Metal Matrix Composites by Enhanced Stir Casting Method

2014 ◽  
Vol 984-985 ◽  
pp. 326-330
Author(s):  
T.M. Chenthil Jegan ◽  
D. Ravindran ◽  
M. Dev Anand
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Tensile Strength ◽  
Boron Carbide ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Stir Casting ◽  
Aluminium Matrix ◽  
Matrix Composites ◽  
Casting Method

Metal Matrix Composites possesses high mechanical properties compared to unreinforced materials. Aluminium Matrix Composites (AMC) is attracted in the emerging world because of its low cost, less weight and enhanced mechanical properties. In the present study the enhancement in mechanical properties like hardness and tensile strength of AMCs by reinforcing AA 6061 matrix with silicon carbide (SiC) and boron carbide (B4C) particles are analyzed. By enhanced stir casting method aluminium matrix was reinforced with boron carbide particulates and silicon carbide particulates with the various weight percentage of 2.5 %,5% and 7.5%.The tensile strength and hardness was found to increase with the increase in wt% of the reinforcement. From the analysis it is observed that the mechanical property of B4C reinforced AMC is significantly good compared to SiC reinforced AMC.

scholarly journals Microstructure and Hardness Characterization behavior of Al-Mg-TiB2 In-Situ Composite

2019 ◽  
Vol 8 (10) ◽  
pp. 461-466
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Composites ◽  
Grain Refining ◽  
In Situ Composite ◽  
Course Innovation ◽  
Tib2 Particles

The Al-Mg-TiB2 is noteworthy modern Aluminum-based composite material due to its phenomenal mechanical properties. These composites show a solid interface between supports – grid when contrasted with other customary Aluminum composites. A blended salt course system was utilized to plan in-situ Al-Mg-TiB2 composites in the present examination. Al – xTiB2 (x = 0, 2.5, 5, 7.5 wt. percent) Metal-Matrix Composites were produced utilizing K2TiF6 and KBF4 salts utilizing an exothermic procedure at 800°C. The materials have been portrayed utilizing SEM and EDS to affirm that no Al3Ti has been created, which is the benefit of blended salt course innovation. SEM micrographs showed TiB2 particles that are conveyed homogeneously without agglomerations all through the aluminum lattice. Research has additionally been directed to examine the hardness of the amalgam strengthened with TiB2 in-situ composites. The hardness of all the created composites was higher than that of Aluminum combination framework in light of the development of TiB2 which brought about grain refining activity

scholarly journals Investigations on Mechanical Behavior of Al6061-TiO2-SiC Produced by Stir Casting

2018 ◽  
Vol 7 (3.34) ◽  
pp. 369
Author(s):  
Nagendran N ◽  
Shanmuganathan V K ◽  
Gayathri N ◽  
Suresh K ◽  
Aravindh S ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Stir Casting ◽  
Mechanical And Thermal Properties ◽  
Matrix Composites ◽  
Casting Method ◽  
Structural Applications

Fine mechanical and thermal properties of metal matrix composites make them more demanding in various fields such as automotive, aerospace and structural applications. In this paper an effort has been made to fabricate a metal matrix composite, Titanium-di-oxide and silicon carbide reinforced in Al 6061 matrix using stir casting method. The reinforcements were added in 2%, 4% and 6% of weight to Al6061 to fabricate the metal matrix composite. Castings were machined and the specimens were prepared for various testing. Mechanical properties such as tensile strength, hardness, and corrosion analysis were studied for various compositions of reinforcements. And then the reinforcement was analyzed and studied for the improvement of mechanical properties in the material.  

Effect of TiB2 particle addition on the mechanical properties of Al/TiB2 in situ formed metal matrix composites

2018 ◽  
Vol 60 (12) ◽  
pp. 1221-1224 ◽  
Author(s):  
Balachandran Gobalakrishnan ◽  
P. Ramadoss Lakshminarayanan ◽  
Raju Varahamoorthi
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Tib2 Particle ◽  
Matrix Composites ◽  
Particle Addition

KAISER ALUMINUM ALLOY 7050

Alloy Digest ◽  
2000 ◽  
Vol 49 (1) ◽  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Heat Treating ◽  
High Fracture Toughness ◽  
High Fracture ◽  
Kaiser Aluminum ◽  
Structural Parts ◽  
Very High

Abstract Kaiser Aluminum Alloy 7050 has very high mechanical properties including tensile strength, high fracture toughness, and a high resistance to exfoliation and stress-corrosion cracking. The alloy is typically used in aircraft structural parts. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: AL-366. Producer or source: Tennalum, A Division of Kaiser Aluminum.

In Situ Preparation and Mechanical Properties of (ZrB2+ZrC)/Zr3[Al(Si)]4C6 Composites

2014 ◽  
Vol 602-603 ◽  
pp. 438-442
Author(s):  
Lei Yu ◽  
Jian Yang ◽  
Tai Qiu
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Bending Strength ◽  
Coefficient Of Thermal Expansion ◽  
Raw Materials ◽  
Linear Increase ◽  
Fine Grain ◽  
Fine Grain Strengthening ◽  
Uniform Microstructure

Fully dense (ZrB2+ZrC)/Zr3[Al (Si)]4C6 composites with ZrB2 content varying from 0 to 15 vol.% and fixed ZrC content of 10 vol.% were successfully prepared by in situ hot-pressing in Ar atmosphere using ZrH2, Al, Si, C and B4C as raw materials. With the increase of ZrB2 content, both the bending strength and fracture toughness of the composites increase and then decrease. The synergistic action of ZrB2 and ZrC as reinforcements shows significant strengthening and toughing effect to the Zr3[Al (Si)]4C6 matrix. The composite with 10 vol.% ZrB2 shows the optimal mechanical properties: 516 MPa for bending strength and 6.52 MPa·m1/2 for fracture toughness. With the increase of ZrB2 content, the Vickers hardness of the composites shows a near-linear increase from 15.3 GPa to 16.7 GPa. The strengthening and toughening effect can be ascribed to the unique mechanical properties of ZrB2 and ZrC reinforcements, the differences in coefficient of thermal expansion and modulus between them and Zr3[Al (Si)]4C6 matrix, fine grain strengthening and uniform microstructure derived by the in situ synthesis reaction.

Test Methods for Mechanical Properties of Structural Adhesives

2010 ◽  
Vol 97-101 ◽  
pp. 814-817 ◽  
Author(s):  
Jun Deng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Shear Strength ◽  
Elastic Modulus ◽  
Butt Joint ◽  
Test Methods ◽  
Joint Specimen ◽  
Lap Shear ◽  
Better Than

One of the greatest drawbacks to predicting the behaviour of bonded joints has been the lack of reliable data on the mechanical properties of adhesives. In this study, methods for determining mechanical properties of structural adhesive were discussed. The Young’s modulus, Poisson’s ratio and tensile strength of the adhesive were tested by dogbone specimens (bulk form) and butt joint specimens (in situ form). The shear modulus and shear strength were test by V-notched specimens (bulk form) and thick adherend lap-shear (TALS) joint specimens (in situ form). The test results show that the elastic modulus provided by the manufacturer is too low, the dogbone specimen is better than the butt joint specimen to test the tensile strength and elastic modulus and the TALS joint specimen is better than the V-notched specimen to test the shear strength.

Mechanical properties of NiAl-Mo composites produced by specially controlled directional solidification

2012 ◽  
Vol 1516 ◽  
pp. 255-260 ◽  
Author(s):  
G. Zhang ◽  
L. Hu ◽  
W. Hu ◽  
G. Gottstein ◽  
S. Bogner ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Directional Solidification ◽  
Creep Resistance ◽  
Room Temperature ◽  
Growth Direction ◽  
Nominal Composition ◽  
Potential Candidate ◽  
In Situ Composites

ABSTRACTMo fiber reinforced NiAl in-situ composites with a nominal composition Ni-43.8Al-9.5Mo (at.%) were produced by specially controlled directional solidification (DS) using a laboratory-scale Bridgman furnace equipped with a liquid metal cooling (LMC) device. In these composites, single crystalline Mo fibers were precipitated out through eutectic reaction and aligned parallel to the growth direction of the ingot. Mechanical properties, i.e. the creep resistance at high temperatures (HT, between 900 °C and 1200 °C) and the fracture toughness at room temperature (RT) of in-situ NiAl-Mo composites, were characterized by tensile creep (along the growth direction) and flexure (four-point bending, vertical to the growth direction) tests, respectively. In the current study, a steady creep rate of 10-6s-1 at 1100 °C under an initial applied tensile stress of 150MPa was measured. The flexure tests sustained a fracture toughness of 14.5 MPa·m1/2at room temperature. Compared to binary NiAl and other NiAl alloys, these properties showed a remarkably improvement in creep resistance at HT and fracture toughness at RT that makes this composite a potential candidate material for structural application at the temperatures above 1000 °C. The mechanisms responsible for the improvement of the mechanical properties in NiAl-Mo in-situ composites were discussed based on the investigation results.

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