Microstructure evolution and mechanical properties in 1Cr low alloy steel with different heat treatments

Liu, M.; Zhang, Z.X.; Wang, S.Q.; Cao, Guanghui; Russell, Alan M.; Liu, Y.H.; Dong, Xiaoming; Zhang, C.X.; Zhang, Z.H.

doi:10.1016/j.msea.2017.08.088

Cited by 8 publications

(1 citation statement)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Kim et al 8 found that with the extension of aging time, M 3 C spheroidization in 1.25Cr-0.25Mo steel is the main reason for the decrease of hardness and creep rupture strength. Liu et al 16 studied the relationship between microstructure and mechanical properties of 1Cr alloy steel after quenching, normalizing, and tempering. They found that strength and elongation after quenching were larger than the normalizing sample.…”

Section: Introductionmentioning

confidence: 99%

Study on impact fracture behavior of G18CrMo2-6 steel after tempering

Liu

Zhang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

The evolution of microstructure of low alloy CrMo steel has a great influence on the mechanical properties. Three different tempering heat treatment conditions were made on the material, and the influence of the microstructure on the impact toughness under different test temperatures was studied. The type, morphology, size and distribution of the second phase will evolve with the change of tempering temperature and time. Impact energy of all samples increases gradually from the lower shelf to upper shelf with the testing temperature increasing. In the lower shelf, the fracture is controlled by the crack nucleation. In the ductile-to-brittle transition temperature (DBTT) range, the fracture is determined by the size of the initial crack initiating on the second phase. In the upper shelf, the cleavage fracture is controlled by the propagation of the carbide crack into continuous grains, and the critical event for fracture is the plasticity of the matrix. The scattering of impact energy in DBTT range is caused by the uneven distribution and size of the brittle second phase.

show abstract

Section: Introductionmentioning

confidence: 99%