Fracture toughness of as-cast freight bogie solebars after volume–surface quenching

V. A. Belov; A. V. Nikitin; V. I. Anikeenko; A. A. Armizonov; S. O. Rogachev

doi:10.1134/S0036029517100032

Fracture toughness of as-cast freight bogie solebars after volume–surface quenching

作者: Belov V.¹, Nikitin A.¹, Anikeenko V.¹, Armizonov A.², Rogachev S.¹
隶属关系:
1. National University of Science and Technology MISiS
2. OOO MIIT Inzhiniring
期: 卷 2017, 编号 10 (2017)
页面: 874-878
栏目: Applied Problems of Strength and Plasticity
URL: https://journals.rcsi.science/0036-0295/article/view/171783
DOI: https://doi.org/10.1134/S0036029517100032
ID: 171783

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详细

The fracture toughness of freight bogie solebars made of low-carbon 20GFL steel is studied in the normalized state and after volume–surface quenching (VSQ). The fracture strength is estimated using acoustic emission and the critical J integral. VSQ is shown to increase J_c of the solebar material by a factor of ≈1.5, and its static strength is higher than that after normalization by ≈1.7 times.