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Microscopic Examination of Metals

Microscopic examination of metals

Material failure always has its roots at the microscopic level, where tiny interactions between grains ultimately establish the macro-level performance. These interactions are evident during microscopic examination of metals, where the aggregate work of manufacturing processes creates defects at the surface that can result in reduced performance or failure. For this reason, microscopic examination is necessary for any metal characterization, as it provides a detailed detection of present microstructures.

Microscopic Examination of Metals

During microstructure analysis of metals and alloys, a microscopic examination studies the microstructural features of the material under magnification. These microstructure analyses range from simple grain size or coating thickness determination to thoroughly evaluating abnormalities and failure mechanisms such as inclusions, segregation, and surface layers.

Microscopic analysis performed at LTI is Nadcap and A2LA ISO/IEC 17025 accredited. Examinations are completed according to detailed procedures and applicable industry standards to ensure reliability. A detailed microstructure analysis lab report is available when testing is complete.

Capabilities

  • Grain size (ASTM E112)
  • Extent of Carburization & Decarburization
  • Intergranular Attack & Oxidation
  • Sensitization
  • Alpha Case/Surface Contamination
  • Percent Spheroidization
  • Inclusion Rating (ASTM E45)
  • Plating Thickness
  • Case Depth
  • Carbide Precipitation
  • Ferrite by Point Count (ASTM E562)
  • Nodularity, Nodule Count
  • Eutectic Melting
  • The volume fraction of various phases or second phase particles in metals

Specifications

  • ASME Sect. IX
  • ASTM A247
  • ASTM A262
  • ASTM E112
  • ASTM E1268
  • ASTM E2142
  • ASTM E3
  • ASTM E407
  • ASTM E45
  • ASTM E562
  • ASTM E883
  • ASTM E92
  • MIL Specifications
Microscope calibration uses a stage micrometer to establish reticle dimensions

LTI’s Material Lab Testing Is an Industry-Leader

Microscopic examination of metals reveals a world of microstructure defects hidden from the naked eye. By detecting these surface abnormalities,  our experienced Metallurgists can propose remediation steps to correct their presence and prevent them from occurring in future material samples or products. For proper material characterization, labs need expertise and equipment for thorough analysis. Fortunately, LTI excels in both – our whole model is built around providing customers with all their material testing needs in a single location to simplify logistics and approvals.

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