Effect of structure on the properties of steel 30Kh2N2SMK5
- 17 Downloads
High strength, ductility, magnetic induction, and ductile fracture of steel 30Kh2N2SMK5 are characteristic of the structure of a finely dispersed ferrite-cementite mixture resulting from quenching to martensite and tempering at 575°.
A lower cooling rate (≤300 deg/min) leads to formation of a coarse structure in the tempered condition. In this case the fracture toughness decreases and susceptibility to brittle fracture increases.
KeywordsMartensite Brittle Ductility Cool Rate Fracture Toughness
Unable to display preview. Download preview PDF.
- 1.Yu. A. Bashnin, V. M. Korovina, and L. G. Chernukha, "Chemical and structural heterogeneity of large forgings of rotor steels", Metalloved. Term. Obrab. Met., No. 11, 22 (1975).Google Scholar
- 2.M. A. Kramarov et al., "Resistance to fracture of steel 35KhN3MFA for large parts," Metalloved. Term. Obrab. Met., No. 1, 14 (1976).Google Scholar
- 3.A. P. Gulyaev, "Determining the work of crack propagation", Zavod. Lab., No. 12, 1494 (1970).Google Scholar
- 4.P. N. Nikitin et al., "Properties of forgings of high-strength magnetic steel 30Kh2N2SMK5 (ÉP822)", Elektrotekh. Promyshlennost', Ser. Elektrotekh. Mater., No. 9 (62), 14 (1975).Google Scholar