The Evolution of Structure and Mechanical Properties of Fe-Mn-V-Ti-0,1C Low-Carbon Steel Subjected to Severe Plastic Deformation and Subsequent Annealing

被引：1
|
作者：
Zakharova, Galina G. [1 ]
Astafurova, Elena G. [1 ]
Naydenkin, Eugene V. [1 ]
Raab, George I. [2 ]
Dobatkin, Sergey V. [3 ]
机构：
[1] Russian Acad Sci, Inst Strength Phys & Mat Sci, Siberian Branch, Tomsk, Russia
[2] Ufa State Aviat Tech Univ, Ufa, Russia
[3] Russian Acad Sci, AA Baikov Met Inst, Moscow, Russia
来源：
NANOMATERIALS BY SEVERE PLASTIC DEFORMATION: NANOSPD5, PTS 1 AND 2 | 2011年 / 667-669卷
关键词：
low-carbon steel; equal channel angular pressing; high pressure torsion; recrystallization; carbides; ferrite; pearlite;
D O I：
10.4028/www.scientific.net/MSF.667-669.325
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The present work deals with the evolution of mechanical properties and structure of low-carbon Fe-1,12Mn-0,08V-0,07Ti-0,1C (wt.%) steel after severe plastic deformation (SPD) and high-temperature annealing. Steel in initial ferritic-pearlitic state was deformed by equal channel angular pressing (ECAP) at T=200 degrees C and high pressure torsion (HPT) at room temperature. The evolution of ultrafine grained structure and its thermal stability were investigated after annealing at 400-700 degrees C for 1 hour. The results shown that SPD leads to formation of structure with an average size of (sub-) grain of 260 nm after ECAP and 90 nm after HPT. Ultrafine grained structures produced by SPD reveal a high thermal stability up to 500 degrees C after ECAP and 400 degrees C after HPT. At higher annealing temperatures a growth of structural elements and a decrease in microhardness were observed.
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页码：325 / +
页数：2
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