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عدد المقالات والبحوث 28 هذا الاستاذ ينشر تحت فئة كلية الهندسة/المسيب

Modification of the spinodal hardening in a Cu-9 wt % Ni-6 wt % Sn alloy by 0.1 wt % silicon or aluminium addition  546 Views
Among non-ferrous metallic materials, berylliumcopper and its modifications have been known to develop high
Surface hardening of commercially pure titanium by laser nitriding: Response surface analysis  502 Views
In this work laser surface nitriding was performed to enhance wear and erosion resistance of pure titanium by increasing its surface hardness while keeping the strength and ductility of the core for static and dynamic
LASER SURFACE TREATMENTS OF IRON-BASED SUBSTRATES FOR AUTOMOTIVE APPLICATION  505 Views
In the present work laser surface alloying of low carbon steel with carbon has been investigated for automotive application
carburizing of Ti–6Al–4V alloy by laser melting  531 Views
Surface carburizing of a Ti–6Al–4V alloy using laser melting has been investigated experimentally, with the aim of increasing surface hardness and hence improving related properties such as wear and erosion resistance
Oxidation of titanium aluminides produced by laser surface alloying  481 Views
One of the limitations of current high-temperature titanium alloys of the near-c~ type is the poor oxidation resistance at temperatures above about 600 °
Modification of the spinodal hardening in a Cu-9 wt % Ni-6 wt % Sn alloy by 0.1 wt % silicon or aluminium addition  441 Views
Among non-ferrous metallic materials, berylliumcopper and its modifications have been known to develop high strength by a process of precipitation. The fact that these alloys suffer from the disadvantages of high cost, certain property limitations and health
Microstructure andcorrosionbehaviorofausteniticstainlesssteeltreated with laser  441 Views
SurfacemodificationofAISI316stainlesssteelbylasermeltingwasinvestigatedexperimentallyusing 2 and4kWlaserpoweremittedfromacontinuouswaveCO2
Ceramic-metal composites produced by laser surface treatment  428 Views
The injection of SiC particles (150 J1m size) into laser surface melted commercial purity titanium, Ti-6AI-4V (wt-%) alloy, and Ti-2·5Cu (wt-%) alloy has been investigated using 1·75 kW laser power, 5 mm beam diameter, 0·15 g S-l powder jiowrate and
Microstructure of Ti-TiB2 surface layers produced by laser particle injection  409 Views
Surface treatments of materials using high power CO2 lasers typically involve moving a substrate under the laser beam and generating a melt zone; concurrently, metal or ceramic or a combination of metal + ceramic in the form of powder is introduced into the melted zone by a feeding device, or by preplacing
In situ production of Ti-TiC composites by laser melting  360 Views
In previously reported work [1-4] high-power CO2 lasers were used to produce Ti/SiC or TiC composite layers, approximately 1 mm thick, by the injection of the cerami
Laser surface melting of Ti-10V-2Fe-3AI alloy  317 Views
Laser surface melting of Ti and Ti alloys has been used to obtain rapid solidification with resultant fine-scale microstructures and segregation [1, 2]. For example
Titanium aluminide composites produced by laser melting  299 Views
The microstructures of titanium aluminide based composites have been investigated using optical microscopy, scanning electron microscopy, energy dispersive spectrometry, transmission electron microscopy, and scanning transmission electron microscopy.
Microstructures of titanium-aluminides produced by laser surface alloying  254 Views
The microstructures of Ti-AI layers (from 43-80 at %AI) produced by laser surface alloying of titanium substrate with a powder feed technique have been investigated
Martensite formation in Ti-Allayers produced by laser surface alloying  249 Views
The microstructures of Ti-Al layers produced by laser surface alloying of a Ti substrate have been investigatedfor Al contents in the range 17-36 at.-%.
Surface nitriding of Ti–6Al–4V alloy with a high power CO 2 laser  231 Views
Surface nitriding of a Ti–6Al–4V alloy by laser melting in a flow of nitrogen gas has been investigated, with the aim of increasing surface hardness and hence improving related properties such as wear and erosion resistance. The effect of the scanning speed, nitrogen dilution, and nitrogen flow rate on microstructure, microhardness,
Functionally graded nickel-aluminide and iron-aluminide coatings produced via laser cladding  225 Views
Functionally graded nickel-aluminide and iron-aluminide in the form of superimposed clad layers up to ~ 4 mm total thickness were produced on nickel and on iron based substrates, respectively. A continuous wave carbon dioxide laser and two separate powder feeders were
Functionally gradient titanium-aluminide composites produced by laser cladding  177 Views
The laser surface cladding of Ti-AI/TiB 2 composites was investigated as a means of producing a functionally gradient material on a commercially pure Ti substrate.
Effect of processing parameters on titanium nitrided surface layers produced by laser gas nitriding  181 Views
Experimental investigations based on Response Surface Method (RSM) were carried out to study the influence of laser power, nitrogen flow rate, and scanning speed on the microstructure, depth, hardness, and cracking of
Surface melting of nodular cast iron by Nd-YAG laser and TIG  185 Views
The effect of surface melting and rapid solidification on the structure and hardness of nodular cast iron has been investigated. Two heat sources were used for surface melting mainly,
STUDY OF SURFACE LAYERS ON PURE TITANIUM PRODUCED BY LASER GAS NITRIDING  523 Views
The paper investigate surface nitriding of titanium by laser melting
Materials Response with High Power Laser in Surfacece Treatment of Ferrous Alloys  527 Views
The paper include the use of high power laser in surface treatment of ferrous alloys
Microstructure and erosion characteristic of nodular cast iron surface modified by tungsten inert gas  664 Views
The surface of nodular cast iron has been melted and rapidly solidified by Tungsten Inert Gas (TIG) process to produce a chilled structure of high hardness and better erosion resistance. Welding currents of magnitude 100, 150, and 200 A at a constant voltage of 72 have been used to melt the surface of nodular cast iron. Microstructural characterization, hardness measurements, and erosion wear tests have been performed on these modified surfaces as well as on the untreated material.
Surface melting of nodular cast iron by Nd-YAG laser and TIG  606 Views
The effect of surface melting and rapid solidification on the structure and hardness of nodular cast iron has been investigated. Two heat sources were used for surface melting mainly, laser beam (LB) and electric arc generated between the tungsten electrode and the specimen (i.e. TIG). Optical microscope, scanning electron microscope and X-ray diffraction were used to describe the microstructure and identify the phases in the melted zone
Microstructure and erosion characteristic of nodular cast iron surface modified by tungsten inert gas  641 Views
The surface of nodular cast iron has been melted and rapidly solidified by Tungsten Inert Gas (TIG) process to produce a chilled structure of high hardness and better erosion resistance. Welding currents of magnitude 100, 150, and 200 A at a constant voltage of 72 have been used to melt the surface of nodular cast iron
SEM studies of fractures in spinodally hardened Cu-9Ni-6Sn-X alloys  617 Views
Results presented herein are clearly indicative of the control that can be exercised on precipitate size and distribution in the spinodal Cu-9Ni-6Sn
Process modelling of the laser treatment of titanium with aluminum  632 Views
The aim of this work is to develope titanium - aluminides aurfcelayer to improve oxidation
Assessment and Minimization of the Residual Stress in Dissimilar Laser Welding  614 Views
The aim of this paper is to develop mathematical models to assess residual stresses in the heat-affected zone of dissimilar butt jointed welds of AISI304 and AISI10.
List of publications  582 Views
Most of these papers about the use of high power CO2 lasers in surface treatments a variety of important engineering alloys

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