Field Metallographic Replication

Field Metallographic Replication is a non-destructive inspection technique that enables the on site determination of the microstructure of a component. This can be critical in applications where time in service or unexpected processing conditions (overheating, fire damage, chemical upsets, etc.) result in a degradation of material properties or environmental cracking. If damage such as cracking is identified using conventional inspection techniques, FMR of the area of concern assists in the determination of the cause; i.e. service related or fabrication/manufacturing defects.

The FMR technique involves polishing the surface of a component to a mirror finish, followed by the application of an etchant; revealing the current microstructure. This microstructure is then "copied" onto a tape providing a permanent record of the grain structure. This is examined on site by one of our Metallurgical Engineers using light microscopy, giving the client instant feedback on the current condition of the component. Assessment of replicas taken on cracks or defects in the field provides the client with valuable information that can be used as part of a repair procedure or risk assessment.

FMR has been one of our core competencies for over 25 years. As a result, we've gained extensive experience in a wide variety of applications and can develop inspection solutions for complex geometries and to solve unique problems.

Wayland Engineering provides clients with field Metallurgical Engineers capable of managing complex fabrication, repair, and materials challenges. We specialize in assisting clients with non-routine scenarios, such as with advanced or embrittled materials. Clients have found significant value in having an experienced Metallurgist onsite for activities such as:

• Repairs to temper embrittled and other embrittled materials

• Repairs to heavy wall pressure vessels and piping

• Repairs to advanced Cr-Mo materials

• Repairs to High Temperature, High Alloy Castings

• Repairs to embrittled cladding and weld overlays or when the underlying base metal is sensitive to welding

• High temperature heat treatments, such as solution annealing

• Monitoring (or performing) indication removal in critical components