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Quench Embrittlement: Intergranular Fracture
Due to Cementite and Phosphorus in Quenched Carbon and Alloy".
11756 Fatigue fracture and intergranular fracture
modes observed 10388 Intergranular fracture
Intergranular fracture is typical of many forms of SCC, hydrogen embrittlement, and temper-embrittled steel.
Plastics do not display cleavage and intergranular fracture.
3] materials exhibited intergranular fracture
features, as shown in Figure 2, with critical flaw dimensions on the order of the grain size.
The intergranular fracture
indicated a brittle failure mode and that the material had become embrittled.
A typical scanning electron micrograph of the pre-existing crack surface exhibited rock-candy"-type brittle intergranular fracture
generally associated with hydrogen-induced cracking.
Eversince aluminum (Al) has been used as a deoxidizer for steel, foundrymen have seen the occasional occurrence of a brittle, intergranular fracture
mode in castings.