Pseudoeutectoid in low-carbon unalloyed steel
- 23 Downloads
Refinement of hot-rolled type St3sp steel contributes to the strengthening (for example, by 120 N/mm2). The resilience (by 10 J/cm2) and the fiber portion in the fracture (by 20%) are simultaneously increased in this case.
The presence in the structure of a pseudoeutectoid, whose amount ranges from 40 to 60%, depending on the regime, assumes decisive significances in the formulation of properties of low-carbon unalloyed steel after quenching from the rolling heat.
Quenching from the rolling heat promotes the strengthening of steel St3sp (by 60–80%), but simultaneously gives rise to loss of resilience due to a reduction in the work of crack initiation.
KeywordsCrack Initiation Decisive Significance Unalloyed Steel Rolling Heat St3sp Steel
Unable to display preview. Download preview PDF.
- 1.L. V. Popova, D. V. Lebedev, D. A. Litvinenko, and A. G. Nasibov, "Properties of low-alloy steel with tellurium, Met. Izv. Akad. Nauk SSSR, No. 2, 127–129 (1983).Google Scholar
- 2.V. I. Bol'shakov, K. F. Starodubov, and M. A. Tylkin, Heat treatment of Structural Steel of Increased Strength [in Russian], Metallurgiya, Moscow (1977), pp. 19–21.Google Scholar
- 3.S. N. Polyakov, E. N. Bukhinik, and V. T. Chernenko, Thermal Hardening of Structural (shaped) Profiles, Heat Treatment of Metals [in Russian], No. 3, Metallurgiya, Moscow (1974), pp. 44–48.Google Scholar
- 4.Kh. Sh. Levinzon and V. V. Nagovitsyn, "Parameters of the hardening heat treatment of steel from the rolling heat," Stal', No. 1, 62–65 (1969).Google Scholar
- 5.Y. Omari, Tetsu to Khagane, No. 1, 126–127 (1979).Google Scholar
- 6.V. A. Rodnikov, "The structure and properties of petroleum-grade piping after hardening heat treatment with acelerated heating," Candidate's Dissertation, Technical Sciences, Dnepropetrovsk (1985), p. 23.Google Scholar