The influence of initial heat treatment of low-carbon steel Fe-Mo-Nb-V-C on peculiarities of ultrafine-grained structure in high-pressure torsion

2015 ◽  
Author(s):  
Galina Maier ◽  
Vera Koshovkina ◽  
Elena Astafurova ◽  
Eugene Melnikov ◽  
Eugene Naydenkin ◽  
...  
Keyword(s):  
Heat Treatment ◽  
High Pressure ◽  
Carbon Steel ◽  
High Pressure Torsion ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Ultrafine Grained Structure ◽  
Ultrafine Grained ◽  
Initial Heat ◽  
Initial Heat Treatment

Microstructural Characterization of Low-Carbon Steel Processed by High Pressure Torsion and Annealing

2008 ◽  
Vol 584-586 ◽  
pp. 649-654 ◽  
Author(s):  
Elena G. Astafurova ◽  
Sergey V. Dobatkin ◽  
Evgeny V. Naydenkin ◽  
Svetlana V. Shagalina ◽  
Galina G. Zakharova
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Carbon Steel ◽  
High Pressure Torsion ◽  
Low Carbon Steel ◽  
Microstructural Characterization ◽  
Initial Structure ◽  
Low Carbon ◽  
Initial State ◽  
Ultrafine Grained

Ultrafine grained low carbon steel processed by high pressure torsion (HPT) has been investigated. Depending on initial state (ferritic-pearlitic state after normalization at 950°C, or martensitic ones after quenching from 950°C and 1180°C), the evolution of the microstructure and the mechanical properties was investigated after HPT and annealing at 400-600°C using transmission electron microscopy and X-ray analysis. It has been shown that HPT of martensitic low carbon steel provides a finer structure then that for ferritic-pearlitic initial state, and the initial martensitic morphology and phase composition is strongly dependent on the temperature of quenching. The initial structure was refined by HPT to 95nm in ferritic-pearlitic state and up to 65 and 50 nm in martensitic ones (after quenching from 950°C and 1180°C, respectively). Such ultrafine grained structures demonstrate substantial mechanical properties and possess a high thermal stability up to 500°C in all investigated states. Annealing for 1 h at 500°C results in grain growth up to 860nm for ferritic-pearlitic initial state and 150-450 nm for martensitic ones.

Interfacial microstructures and properties of aluminum alloys/galvanized low-carbon steel under high-pressure torsion

2014 ◽  
Vol 64 ◽  
pp. 287-293 ◽  
Author(s):  
Yang Liu ◽  
Xiufang Bian ◽  
Kai Zhang ◽  
Chuncheng Yang ◽  
Le Feng ◽  
...  
Keyword(s):  
High Pressure ◽  
Carbon Steel ◽  
Aluminum Alloys ◽  
High Pressure Torsion ◽  
Low Carbon Steel ◽  
Low Carbon

scholarly journals Effects on hardness and microstructure of AISI 1020 low-carbon steel processed by high-pressure torsion

2017 ◽  
Vol 6 (4) ◽  
pp. 355-360 ◽  
Author(s):  
Diana Maritza Marulanda Cardona ◽  
Jittraporn Wongsa-Ngam ◽  
Hernando Jimenez ◽  
Terence G. Langdon
Keyword(s):  
High Pressure ◽  
Carbon Steel ◽  
High Pressure Torsion ◽  
Low Carbon Steel ◽  
Low Carbon

scholarly journals The ultrafine-grained structure, texture and mechanical properties of low carbon steel obtained by various methods of plastic deformation

2016 ◽  
Vol 6 (2) ◽  
pp. 126-131 ◽  
Author(s):  
I. M. Safarov ◽  
A. V. Korznikov ◽  
R. M. Galeyev ◽  
S. N. Sergeev ◽  
S. V. Gladkovsky ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Ultrafine Grained Structure ◽  
Ultrafine Grained

Influence of Initial Heat Treatment on the Microhardness Evolution of an Al-Mg-Sc Alloy Processed by High-Pressure Torsion

2016 ◽  
Vol 879 ◽  
pp. 1471-1476 ◽  
Author(s):  
Pedro Henrique R. Pereira ◽  
Yi Huang ◽  
Terence G. Langdon
Keyword(s):  
Heat Treatment ◽  
High Pressure ◽  
High Pressure Torsion ◽  
Solution Treatment ◽  
Equivalent Strain ◽  
Microhardness Distribution ◽  
Solution Treated ◽  
Mg Content ◽  
Initial Heat ◽  
Initial Heat Treatment

An Al-3% Mg-0.2% Sc alloy was subjected to annealing or solution treatment and further processed by HPT at room temperature. Microhardness measurements were taken along the middle-sections of the discs and they demonstrated that a very substantial hardening is achieved during HPT processing regardless of the initial heat treatment. Hardness values of ~200 Hv were recorded at the edge of the samples although the microhardness distribution remained inhomogeneous along the diameters of the discs after 20 turns of high-pressure torsion. In addition, the microhardness of the solution treated Al-Mg-Sc samples continued to increase with the equivalent strain imposed by the anvils even after 30 turns of HPT processing whereas the hardness at the edges of the annealed discs saturated after 10 turns. These differences in the hardness evolution are attributed to the higher Mg content in solid solution in the case of the solution treated samples and its influence on delaying the recovery rate of this aluminium alloy.

scholarly journals Dry Sliding Wear Properties of Sub-Microcrystalline Ultra-Low Carbon Steel Produced by High-Pressure Torsion Straining

2012 ◽  
Vol 53 (1) ◽  
pp. 128-132 ◽  
Author(s):  
Hirotaka Kato ◽  
Yoshikazu Todaka ◽  
Minoru Umemoto ◽  
Kazunobu Morisako ◽  
Motonori Hashimoto ◽  
...  
Keyword(s):  
High Pressure ◽  
Carbon Steel ◽  
Sliding Wear ◽  
High Pressure Torsion ◽  
Low Carbon Steel ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Low Carbon ◽  
Wear Properties ◽  
Ultra Low Carbon Steel
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