Know A Material’s Structure And Weakness Through Metallurgical Testing

Global Welding Technology
2 min readJan 12, 2018

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Metallurgy and metallography are advanced forms of NDT used to determine various flaws in a material. You need to understand the processes precisely before opting for them.

Metallurgical testing and analysis can be a valuable source of information to any industry working with metals. Laboratory testing’s metallography experts can examine samples to:

  • Detect surface and internal flaws
  • Determine microstructural features
  • Evaluate heat treatments
  • Ensure conformance to required specifications

What is Metallurgy?

Metallurgy is the material science that studies the physical and chemical behaviours of the metallic elements, their intermetallic compounds, and their mixtures, which are used to make metal alloys. Metallurgy is also the technology of metals: the way in which science is applied to the production of metals, and the engineering of metal components through thermal and forming processes, so they can be used to meet the physical needs in developing products for consumers and manufacturers. To avail this kind of service, hire a welding supervisor in Melbourne.

What is Metallography?

Metallography is the study of the physical structure and components of metals and other materials, typically using microscopy, to study the microstructure and the effects of the thermal, forming, joining & other manufacturing processes used to make the metal or material fit for use in a product, or help in an examination on why a metal failed.

Different Metallurgical Analysis

Metallurgical analysis includes the sample preparation methods used to prepare metal and other material samples for analysis; and the many test methods used to evaluate and document the metal and other material samples for suitability of use in its intended application.

Types of Analysis:

  • Comparative Analysis Between Materials
  • Comparative Analysis Between Processes
  • Competitor Analysis
  • Customer Requirements
  • Defect Analysis
  • Design Review
  • Failure Analysis
  • First Article Inspection
  • Heat Treat Response

What are the materials analysed?

  • Alloy Steels
  • Aluminum and aluminum Alloys
  • Brasses
  • Bronzes
  • Carbon steels
  • Cast irons
  • Cast steels
  • Castings
  • Ductile iron
  • Forgings, and many more.

Metallurgical testing process

The first step in metallurgical testing is test sample preparation. Various types of samples are prepared for metallurgical analysis in a NDT laboratory using precision cutting, mounting, grinding and polishing techniques, as well as etching when required.

Purposes:

  • To evaluate if there is a hole and inclusions in die casting and welding line
  • To decide the organisation direction of die casting
  • Whether or not there exist any obvious flaws of no penetration in weld line.

When you’re looking to evaluate the properties of a material, always choose to work with a certified NDT expert in Melbourne.

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Global Welding Technology

We offer welding inspection and consulting services to manufacturing industries in Victoria. www.globalwelding.com.au