Alloy depletion in AISI 4140 steel - Heat treatment defects


Figure 1: Micrograph of AISI 4140 steel as quenched and tempered; microstructure is tempered martensite where cracking is promoted by alloy depletion. (Magnification: 100x; Etchant: 2% Nital.)

Defect name: Alloy depletion
Record No.: 545
Type of defect (Internal/Surface): Internal
Defect classification: Machining defects, heat treatment defects
Steel name: AISI 4140 steel
Steel composition in weight %: No data.
Note:  Alloy depletion.
Reference: Not shown in this demonstration version.

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