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.
|Number of pages||4|
|Journal||Microscopy and Analysis|
|Publication status||Published - Jan 2014|
Shi, X., Wang, W., Ye, W., Sha, W., Shan, Y., Shen, M., & Yang, K. (2014). Light and electron microscopy of microstructure and fractography of an ultrahigh-strength martensitic steel. Microscopy and Analysis, 28(1), 7-10. http://www.microscopy-analysis.com/magazine/issues/light-and-electron-microscopy-microstructure-and-fractography-ultrahigh-strength