In Situ Metal Matrix Composite Surfacing by Laser Surface Alloying

2011 ◽  
Vol 227 ◽  
pp. 84-91
Author(s):  
Jyotsna Dutta Majumdar
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Composite Layer ◽  
Metallic Matrix ◽  
Surface Region ◽  
Present Contribution ◽  
Near Surface ◽  
In Situ Reactions

Laser as a source of focused energy may be applied for the modification of microstructure and/or composition of the near surface region of a component. The technique may be applied for the development of a ceramic/intermetallics/interstitial compound dispersed metal matrix composite layer on the surface of metallic substrate by melting the substrate with a high power laser and simultaneous addition of alloy powders for the development of metal matrix composite layer by in-situ reactions. In the present contribution, development of metal-dispersed and intermetallic-dispersed matrix composite layer on the surface of metallic matrix has been discussed with a suitable example of its application.

scholarly journals Microstructure and mechanical characteristics of an in-situ synthesis of AA7075/TiB2 metal matrix composite

2021 ◽  
Vol 309 ◽  
pp. 01149
Author(s):  
Rahul Das ◽  
Duryodhan Sethi ◽  
Barnik Saha Roy
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Intermediate Phase ◽  
Tensile Specimen ◽  
Stir Casting ◽  
Optical Microscope ◽  
X Ray Diffraction ◽  
In Situ Reactions

In the present study, AA7075/TiB2 aluminium metal matrix composite (AMCs) was prepared by stir casting method using in-situ reactions of inorganic salts KBF4 and K2TiF6. In this process AA7075 alloy is reinforced with different weighted percentages of (5 %wt, 10 %wt, and 15 %wt) Titanium Diboride (TiB2) particles. X-ray Diffraction (XRD) investigation reveals the presence of TiB2 particles without any formation of the intermediate phase. An optical microscope was used to examine the microstructure, which revealed that the TiB2 particles are equally distributed and that grain size reduces as the weighted percentage of reinforcement particles increases. When the weighted percentage of TiB2 reinforcement particles increased, the microhardness and ultimate tensile strength of the AA7075/TiB2 AMCs increased. Furthermore, the ductile mode of failure of the tensile specimen has been observed by fractography analysis.

scholarly journals In Situ Stress Tensor Determination during Phase Transformation of a Metal Matrix Composite by High-Energy X-ray Diffraction

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1415 ◽  
Author(s):  
Guillaume Geandier ◽  
Lilian Vautrot ◽  
Benoît Denand ◽  
Sabine Denis
Keyword(s):  
Phase Transformation ◽  
Stress Tensor ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
High Energy ◽  
X Ray Diffraction ◽  
Synchrotron Source ◽  
X Ray

In situ high-energy X-ray diffraction using a synchrotron source performed on a steel metal matrix composite reinforced by TiC allows the evolutions of internal stresses during cooling to be followed thanks to the development of a new original experimental device (a transportable radiation furnace with controlled rotation of the specimen). Using the device on a high-energy beamline during in situ thermal treatment, we were able to extract the evolution of the stress tensor components in all phases: austenite, TiC, and even during the martensitic phase transformation of the matrix.

Investigation on Mechanical Behavior of Hot Rolled Al7075-TiB2 In-situ Metal Matrix Composite

2018 ◽  
Vol 5 (11) ◽  
pp. 25605-25614 ◽  
Author(s):  
A.K. Gajakosh ◽  
R. Keshavamurthy ◽  
G. Ugrasen ◽  
H. Adarsh
Keyword(s):  
Mechanical Behavior ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Hot Rolled

Tribological properties of Ti-aluminide reinforced Al-based in situ metal matrix composite

2005 ◽  
Vol 13 (7) ◽  
pp. 733-740 ◽  
Author(s):  
Debdas Roy ◽  
Bikramjit Basu ◽  
Amitava Basu Mallick
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Tribological Properties ◽  
Metal Matrix
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