Metallography, Metal alloys, Materials Testing, Materials Testing Centre

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Microstructure analysis, Analysis of sensitisazion, Determination of austenitic and ferritic grain size , Evaluation of non-metallic inclusions , Metallurgical band examination, Measurement of the thickness of coatings and metal oxide layers , Classification of graphite , Baumann test, Residual austenite measure , Measure of Delta ferrite , Measure of superficial carburation depth , Verification of the microstructure of surface treatments , Research of secondary phases , Ananalys of high temperature oxidation , Analysis of eutectic melting phase , Analysis of the distribution of copper in plating , Macro-graphic analysis of non-ferrous materials , Metallographic test ferrous metal materials , Metallographic test non ferrous metal materials , Metallography

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Materials Testing Centre > Materials Testing > Metal alloys
Metal alloys - Metallography

Metallographic, micrographic and macrographic inspections are among the most important analytic techniques to evaluate the characteristics of metallic materials.

Indeed, the structure strongly affects the properties of the material. These tests do not result in figures as they are inspections (by the microscope, the stereomicroscope or visual). Therefore, the skills and experience of the technician are basic for the success of the inspection and for obtaining as much information as possible from that inspection.

The connection between the structural constituents found out, the defect causes these could have determined on the examined sample, the actions to implement in the production cycle to avoid the repeated occurrence of the defect etc., are considerations requiring a deep metallurgic knowledge and a long lab experience.

Micrographic inspections
Micrographic metallographic inspections are widely used in the analysis aimed at determining the structural state of the concerned sample.
As a matter of fact, the structure strongly affects the mechanical characteristics of the material, thus the great interest in this kind of tests. There are countless applications ranging from the determination of the supply status of a rolled section to the study of the failure of a mechanical component.
It is kind of analysis, the deep knowledge and experience of the technician play a very big role.

Scanning electron microscope (SEM) inspections
The electron microscope can enlarge the observed image till 300,000 times, making highly accurate investigations possible.
For example, the SEM gives a decisive contribution in studying the failure surfaces of mechanical parts (fractograph). Moreover, used with the energy dispersion sound, it allows chemical analysis in extremely limited areas. In this way, after having found out an inclusion or a corrosion product of a few micron, you can carry out its chemical analysis and determine its composition and thus its origin.
Obviously, it is an extremely powerful and versatile instrument, which becomes completely useless if not used by a highly experienced technician in this field.

Macrographic inspections
These are carried out by a stereomicroscope, a special instrument allowing observation with a certain number of magnifications without losing the depth of the field of view, thus keeping a three-dimensional view of the object.
Macrographic inspections have several applications: from the study of the fracture surfaces (search for failure causes of mechanical parts) to the observation of a welded structure, to the survey of sulphur and lead distributions (Bauman impression and Wragge impression) in certain steels.

The metallurgical laboratory of TEC Eurolab, offers its expertise for your testing needs in the areas shown above.

For further information, please contact our laboratory: webmail@tec-eurolab.com




Microstructure analysis
A  microstructural analysis is performed in order to evaluate the microstructure in a metal alloy.
Analysis of sensitisazion
A  microstructural analysis is performed in order to evaluate the microstructure in a metal alloy.
Determination of austenitic and ferritic grain size
The microstructural examination is performed in order to define the size of austenitic-ferritic grain.


Evaluation of non-metallic inclusions
A microstructural examination is performed in order to define the presence of non-metallic inclusions in steel.
Metallurgical band examination
A morphological evaluation is performed in order to define the directional distribution (bands) of the ferrite and pearlite in case hardening steels (carburizing).

Measurement of the thickness of coatings and metal oxide layers
A microstructural examination is performed in order to define the thickness of metal coatings or oxide layers.
Classification of graphite
A microstructural examination is performed in order to define the type, distribution and dimension of graphite in cast irons.
Baumann test
Residual austenite measure
Measure of Delta ferrite
Measure of superficial carburation depth
Verification of the microstructure of surface treatments
A  microstructural analysis is performed in order to evaluate the microstructure in a metal alloy.
Research of secondary phases
A  microstructural analysis is performed in order to evaluate the microstructure in a metal alloy.  
Ananalys of high temperature oxidation
Analysis of eutectic melting phase
Analysis of the distribution of copper in plating
Macro-graphic analysis of non-ferrous materials
Metallographic test ferrous metal materials
A  microstructural analysis is performed in order to evaluate the microstructure in a metal alloy.

Metallographic test non ferrous metal materials
A  microstructural analysis is performed in order to evaluate the microstructure in a metal alloy.

 





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