Abstract
Microstructure, tensile properties and fractography have been examined in the oil-quenched samples of a low-alloy ultrahigh strength 4340 steel. Intergranular fracture was revealed to locate at the fracture origin. However, neither the quenched Charpy V-notched impact samples nor the tempered tensile samples showed such intergranular fracture behavior. The effects of loading rate and precipitation are discussed.
Original language | English |
---|---|
Pages (from-to) | 7-10 |
Number of pages | 4 |
Journal | Microscopy and Analysis |
Volume | 28 |
Issue number | 1 |
Publication status | Published - Jan 2014 |