Design of ultrafine eutectic-dendrite composites with enhanced mechanical properties in Fe-based alloy

被引：11

作者：

Kim, T. E. ^{[1
]}

Sohn, S. W. ^{[1
]}

Park, J. M. ^{[1
,2
]}

Bang, C. W. ^{[1
]}

Kim, W. T. ^{[3
]}

Kim, D. H. ^{[1
]}

机构：

[1] Yonsei Univ, Dept Met Engn, Ctr Noncrystalline Mat, Seoul 120749, South Korea

[2] IFW Dresden, Inst Complex Mat, D-01171 Dresden, Germany

[3] Cheongju Univ, IT Div, Cheongju 360764, South Korea

来源：

METALS AND MATERIALS INTERNATIONAL | 2013年 / 19卷 / 04期

关键词：

composites; deformation; phase transformation; compression test; transmission electron microscopy; plasticity; METALLIC-GLASS COMPOSITES; HIGH-STRENGTH; MARTENSITIC-TRANSFORMATION; PLASTICITY; DUCTILITY; SYSTEM; STEELS; SCALE; GAMMA;

D O I：

10.1007/s12540-013-4005-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Mn content on the evolution of microstructure and the enhancement of mechanical properties in Fe-Nb-Mn hierarchical composites consisted of ultrafine eutectic and primary dendrite has been studied by using X-ray diffractometry, scanning electron microscopy, transmission electron microcopy and compression test. Fe-11Nb-5Mn hierarchical composite consisted of alpha'-Fe dendrite and urtrafine alpha'-Fe + Fe2Nb eutectic, and exhibited a reasonably good combination of mechanical properties, i.e. yield strength of 1283 +/- 10 MPa and compressive plastic strain of 7.75 +/- 5%, while Fe-11Nb-15Mn composite consisted of E >-Fe dendrite and E >-Fe + Fe2Nb eutectic structure with some retained gamma phase, and exhibited a far better combination of mechanical properties, i.e. higher yield strength of 1462 +/- 10 MPa and larger compressive plastic strain of 11.28 +/- 2%. The origin for the simultaneous enhancement of high strength and large plastic strain is attributed to E >-Fe martensite formation and strain-induced martensitic transformation from E > to alpha' during deformation.

引用

页码：667 / 671

页数：5

共 22 条

[1] Characterization of Partial Interfacial Fracture on Resistance Spot-Welded TRIP Steels for Automotive Applications [J].

Choi, Chul Young ;

Kim, In-Bae ;

Kim, Yangdo ;

Park, Yeong-Do .

KOREAN JOURNAL OF METALS AND MATERIALS, 2012, 50 (02) :136-145

[2] FCC/HCP MARTENSITIC-TRANSFORMATION IN THE FE-MN SYSTEM - EXPERIMENTAL-STUDY AND THERMODYNAMIC ANALYSIS OF PHASE-STABILITY [J].

COTES, S ;

SADE, M ;

GUILLERMET, AF .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1995, 26 (08) :1957-1969

[3]

FAHR D, 1971, METALL TRANS, V2, P1883

[4] INSITU OBSERVATION OF STRAIN-INDUCED GAMMA-S.RA-EPSILON-S.RA-ALPHA' AND GAMMA-S.RA-ALPHA' MARTENSITIC TRANSFORMATIONS IN FE-CR-NI ALLOYS [J].

FUJITA, H ;

KATAYAMA, T .

MATERIALS TRANSACTIONS JIM, 1992, 33 (03) :243-252

[5] STUDY OF ALPHA-'-MARTENSITE NUCLEATION IN IRON-15 PERCENT MN ALLOY [J].

GRUNES, RL ;

DANTONIO, C ;

MUKHERJEE, K .

MATERIALS SCIENCE AND ENGINEERING, 1972, 9 (01) :1-+

[6] Novel Ti-base nanostructure-dendrite composite with enhanced plasticity [J].

He, G ;

Eckert, J ;

Löser, W ;

Schultz, L .

NATURE MATERIALS, 2003, 2 (01) :33-37

[7] Shape Memory Bulk Metallic Glass Composites [J].

Hofmann, Douglas C. .

SCIENCE, 2010, 329 (5997) :1294-1295

[8] CALCULATION OF THE EFFECT OF ALLOYING ELEMENTS ON THE M(S) TEMPERATURE IN STEELS [J].

ISHIDA, K .

JOURNAL OF ALLOYS AND COMPOUNDS, 1995, 220 (1-2) :126-131

[9] In situ martensitic phase reinforced Fe-Nb-Ni-Mn ultrafine composite with enhanced mechanical properties [J].

Kim, T. E. ;

Park, J. M. ;

Kuehn, Uta ;

Eckert, J. ;

Kim, W. T. ;

Kim, D. H. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 531 :51-54

[10] Effect of Carbon Addition on the Microstructural Evolution and Mechanical Properties in Hypo-Eutectic Fe-Zr(-Nb) Alloys [J].

Kim, Tae Eung ;

Park, Jin Man ;

Sohn, Sung Woo ;

Kim, Do Hyang ;

Kim, Won Tae ;

Stoica, Mihai ;

Kuehn, Uta ;

Eckert, Juergen .

MATERIALS TRANSACTIONS, 2010, 51 (04) :799-802

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