The mechanism of formation of nanostructure and dissolution of cementite in a pearlitic steel during high pressure torsion

被引：455

作者：

Ivanisenko, Y ^{[1
]}

Lojkowski, W

Valiev, RZ

Fecht, HJ

机构：

[1] Univ Ulm, Div Mat, D-89081 Ulm, Germany

[2] Polish Acad Sci, High Pressure Res Ctr, PL-01142 Warsaw, Poland

[3] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, Ufa 450000, Russia

[4] Inst Nanotechnol, Res Ctr Karlsruhe, D-76021 Karlsruhe, Germany

来源：

ACTA MATERIALIA | 2003年 / 51卷 / 18期

关键词：

steels; carbide dissolution; nanocrystalline alloy; high pressure torsion;

D O I：

10.1016/S1359-6454(03)00419-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The nanostructure and the phase composition in UIC 860V pearlitic steel, deformed by high pressure torsion in the shear stress range from 62 to 430, were studied. The refinement of ferrite up to a grain size of 10 nm is accompanied by the total dissolution of the cementite and an increase in hardness of up to 11 GPa. The strain-induced cementite dissolution was found to be a three-stage process corresponding to the stages of nanostructure formation. The mechanism of the dissolution due to wear of cementite at the ferrite/cementite interface, followed by drag of the carbon atoms by the ferrite matrix, is discussed. The flow of carbon atoms with the ferrite phase can be considered as a mechanically driven mass transport process, quantitatively described by the mechanical diffusion parameter. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：5555 / 5570

页数：16

共 50 条

[1]

AETZEN PG, 1994, STUTTGART GEBRUEDER

[2]

ASHBY M.F., 2016, Materials Selection in Mechanical Design, V5 5

[3] The evolution of solutions: A thermodynamic analysis of mechanical alloying [J].

Badmos, AY ;

Bhadeshia, HKDH .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1997, 28 (11) :2189-2194

[4] ENHANCED DIFFUSION IN METALS DURING PLASTIC DEFORMATION [J].

BALLUFFI, RW ;

RUOFF, AL .

APPLIED PHYSICS LETTERS, 1962, 1 (03) :59-60

[5] Mechanically alloyed metals [J].

Bhadeshia, HKDH .

MATERIALS SCIENCE AND TECHNOLOGY, 2000, 16 (11-12) :1404-1411

[6]

Burns JL, 1934, T AM I MIN MET ENG, V113, P239

[7] Nanostructure formation and mechanical alloying in the wheel/rail contact area of high speed trains in comparison with other synthesis routes [J].

Djahanbakhsh, M ;

Lojkowski, W ;

Burkle, G ;

Baumann, G ;

Ivanisenko, YV ;

Valiev, RZ ;

Fecht, HJ .

METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, ISMANAM-2000, 2001, 360-3 :175-182

[8] MECHANICALLY DRIVEN ALLOYING AND GRAIN-SIZE CHANGES IN NANOCRYSTALLINE FE-CU POWDERS [J].

ECKERT, J ;

HOLZER, JC ;

KRILL, CE ;

JOHNSON, WL .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (06) :2794-2802

[9]

FECHT HJ, 1996, NANOMATERIALS SYNTHE

[10] Decomposition of cementite in pearlitic steel due to plastic deformation [J].

Gavriljuk, VG .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 345 (1-2) :81-89

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