Abstract
The influence of austenitizing temperature and austenitizing holding time on the microstructure and mechanical properties of a YP460 grade crack arrest steel was investigated. The first group specimens were austenitized at several temperatures ranging from 900 to 950 °C followed by water cooling. The second group specimens were austenitized at 900 °C with austenitizing holding time from 0.25 to 5 h followed by water cooling. Microstructure was characterized through optical microscopy. Tensile properties, hardness and plane strain fracture toughness of all these materials were determined and correlated with the microstructure. The results indicated that the austenitizing temperature influences the volume fraction of bainite and ferrite and then the mechanical properties. The volume fraction of bainite and ferrite and grain size are also affected by austenitizing time.
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Chen, D., Jiang, W., Xu, S., Liu, N., Guo, H., Cui, Y., … Zhang, Z. (2018). Influence of austenitizing temperature and time on microstructure and mechanical properties of an YP460 grade crack arrest steel. In Minerals, Metals and Materials Series (Vol. Part F12, pp. 135–143). Springer International Publishing. https://doi.org/10.1007/978-3-319-72526-0_13
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