Excessive quenching-stress - Tool steels

Excessive quenching-stress - Tool steels - Fractography

Figure 1: This die, 4 x 33/4-in., was made of manganese oil-hardening steel. Cracks were very faint and are exaggerated by magnetic powder. Cracking occurred because of excessive quenching-stress set up between the body and the small protruding section. The walls of the cracks showed a yellow temper color, indicating that the crack was open throughout the tempering operation. This fact proved that cracking occurred during the quench.

Defect name: Excessive quenching-stress
Record No.: 2847
Type of defect (Internal/Surface): Internal, surface
Defect classification: Heat treatment defects, fractography
Steel name: Tool steel
Steel composition in weight %: No data.
Note: No data.
Reference: Not shown in this demonstration version.