scholarly journals Brittle Fracture Stress of Ultrafine-Grained Low-Carbon Steel

2017 ◽  
Vol 58 (10) ◽  
pp. 1505-1508 ◽  
Author(s):  
Tadanobu Inoue
Keyword(s):  
Carbon Steel ◽  
Brittle Fracture ◽  
Fracture Stress ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Ultrafine Grained

scholarly journals Ductile-to-Brittle Transition and Brittle Fracture Stress of Ultrafine-Grained Low-Carbon Steel

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1634
Author(s):  
Tadanobu Inoue ◽  
Hai Qiu ◽  
Rintaro Ueji ◽  
Yuuji Kimura
Keyword(s):  
Grain Size ◽  
Carbon Steel ◽  
Brittle Fracture ◽  
Fracture Stress ◽  
Low Carbon Steel ◽  
Carbon Steels ◽  
Low Carbon ◽  
Brittle Transition ◽  
Wide Range ◽  
Ductile To Brittle Transition

Ductile-to-brittle transition (DBT) temperature and brittle fracture stress, σF, are important toughness criteria for structural materials. In this paper, low-carbon steels with an ultrafine elongated grain (UFEG) structure (transverse grain size 1.2 μm) and with two ferrite (α)- -pearlite structure with grain sizes 10 µm and 18 µm were prepared. The UFEG steel was fabricated using multipass warm biaxial rolling. The tensile tests with a cylindrical specimen and three-point bending tests with a single-edge-notched specimen were performed at −196 °C. The local stress near the notch was quantitatively calculated via finite element analysis (FEA). The σF for each sample was quantified based on the experimental results and FEA. The relationship between σF and dα in the wide range of 1.0 μm to 138 μm was plotted, including data from past literature. Finally, the conditions of grain size and temperature that cause DBT fracture in low-carbon steel were shown via the stress−d−1/2 map. The results quantitatively showed the superiority of α grain size for brittle fracture.

Brittle Fracture Generated by Abrasion Wear in Borided Low Carbon Steel

2005 ◽  
Author(s):  
Marti´n Castillo ◽  
Manuel Vite ◽  
L. H. Herna´ndez ◽  
G. Villa ◽  
G. Urriolagoitia
Keyword(s):  
Carbon Steel ◽  
Brittle Fracture ◽  
Low Carbon Steel ◽  
Particle Morphology ◽  
Principal Characteristic ◽  
Low Carbon ◽  
Abrasive Particles ◽  
Hard Particles ◽  
Abrasion Wear ◽  
Steel Aisi

This work is related to failure as a consequence of brittle fracture by abrasion wear. The experimental evidence showed that this situation depends on the size and shape of the abrasive particles and their velocity when they are interacting against the abraded surface. The particle morphology determines the type of failure, in which the crack may propagate. This can be in a lateral and radial direction. Also this situation is observed in low carbon steel (AISI 8620) which has been borided previously. In accordance with the results, the strength is improved by: developing phases, varying thickness of the borided layer and increasing the hardness. At the same time, a hardness analysis of the borided steel and the abrasive surfaces was carried out. The hardness is the principal characteristic which increases the abrasion resistance and the borided improved resistant to wear. However, it has different behaviour according to the type mechanism of abrasion wear (two or three bodies). In the case of three bodies, it is necessary to take into account the superficial characteristic, because over rough surfaces, the hard particles deteriorate the surface of the specimen. On the other hand, on smooth borided surfaces, generally the particles slip without several damage.

The effect of chromium and manganese on brittle fracture of low-carbon steel

1959 ◽  
Vol 1 (9) ◽  
pp. 49-51
Author(s):  
V. G. Savitskii ◽  
K. V. Popov ◽  
V. F. Zakharov ◽  
G. M. Grigor'eva
Keyword(s):  
Carbon Steel ◽  
Brittle Fracture ◽  
Low Carbon Steel ◽  
Low Carbon
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