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Metallurgical testing

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Metallurgical testing

What is metallurgical testing / metallography?

Metallography is the study and examination of the microstructure of metals and alloys using various techniques and methods. It involves the preparation, observation, and analysis of metal samples to understand their internal structure, grain size, phase composition, defects, and other microstructural features. Metallography plays a crucial role in materials science, engineering, and quality control, helping researchers and engineers gain insights into the behavior and properties of metals under different conditions.

Our metallurgical testing capabilities

    • 1 ) Sample Preparation:
    • Sectioning: Cutting the metal sample into small pieces using saws or abrasive cutting tools.
    • Mounting: Embedding the cut sample in a resin to provide support during grinding and polishing.
    • Grinding: Reducing the sample’s thickness using abrasive papers to remove surface irregularities and scratches.
    • Polishing: Creating a smooth and scratch-free surface using finer abrasive papers or polishing cloths.
    • Etching: Applying chemical reagents to reveal the microstructure by selectively attacking different phases or grain boundaries.
  • 2 ) Microscopic Examination:
  • Optical Microscopy: Observing the prepared sample under an optical microscope to analyze features such as grain structure, phase boundaries, and inclusions.
  • Scanning Electron Microscopy (SEM): Providing high-resolution images of the sample’s surface using electron beams.
  • Transmission Electron Microscopy (TEM): Offering detailed images of internal microstructures at nanoscale using transmitted electrons.
  • 3 ) Image Analysis and Interpretation:
  • Interpreting the observed microstructures and phases to understand properties like grain size, distribution, and phase composition.
  • Quantitative analysis of features using image analysis software.
  • 4) Grain Size Determination:
  • Measuring the average grain size in the material using established methods like ASTM grain size number or linear intercept method.
  • 5) Phase Identification:
  • Using techniques like X-ray Diffraction (XRD) or Electron Backscatter Diffraction (EBSD) to identify the different phases present in the microstructur.
  • 6) Defect Detection:
  • Identifying defects such as cracks, voids, inclusions, and porosity in the microstructur.
  • 7) Microhardness Testing:
  • Measuring the hardness of specific regions within the microstructure to understand variations in material properties.
  • 8) Correlation with Properties:
  • Relating the observed microstructures to the mechanical, thermal, and electrical properties of the material.

Metallography is particularly important in industries like metallurgy, aerospace, automotive, manufacturing, and quality control. It helps engineers and researchers optimize materials and processes, evaluate material performance, investigate failures, and ensure that metals and alloys meet desired specifications. By understanding the microstructural features of metals, professionals can make informed decisions about the design, production, and use of materials in various applications.

 

The i.t.s advantage

Today metallurgical testing is an integral part of quality assurance in the manufacture and processing of metals. our team will help you to assess the quality of the metallic structure.