4375 part failed due to over-austenitization

4375 part failed due to over-austenitization - Fractography

Figure 1: 4375 part failed due to over-austenitization.

Figure 2: Retained austenite and martensite, 700x, 3% Nital.

Defect name: Over-austenitization
Record No.: 2289
Type of defect (Internal/Surface): Internal
Defect classification: Heat treatment defects, fractography
Steel name: AISI 4375 steel
Steel composition in weight %: No data.
Note: Manufacturing problems.
Reference: Not shown in this demonstration version.