Fe-based Amorphous Alloy with High Strength and Toughness Synthesized based on nm-scale Phase Separation

被引：2

作者：

Lee, Kwang-Bok ^{[1
]}

Park, Kyoung-Won ^{[2
]}

Yi, Sang-Ho ^{[3
]}

Lee, Jae-Chul ^{[1
]}

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136701, South Korea

[2] Korea Inst Sci & Technol, Adv Funct Mat Res Ctr, Seoul 130650, South Korea

[3] FINEX Grp, Gyeongbuk 790300, Posco, South Korea

来源：

KOREAN JOURNAL OF METALS AND MATERIALS | 2010年 / 48卷 / 01期

关键词：

amorphous alloy; phase-separation; structural disordering; shear localization; plasticity; BULK GLASSY ALLOYS; METALLIC-GLASS; MECHANICAL-PROPERTIES; CU-ZR; SIMULTANEOUS IMPROVEMENT; ELASTOSTATIC STRESS; SUPERHIGH STRENGTH; FORMING ABILITY; PLASTIC-FLOW; 4000; MPA;

D O I：

10.3365/KJMM.2010.48.01.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Experiments have demonstrated that the addition of a moderate amount of V to Fe52Co(20-x)B20Si4Nb4Vx amorphous alloy enhances the plasticity of the alloy. In particular, Fe52Co17.5B20Si4Nb4V2.5 alloy withstood a maximum of 8.3% strain prior to fracture along with a strength exceeding 4.7 GPa. Energy dispersive x-ray spectroscopy conducted on the Fe52Co17.5B20Si4Nb4V2.5 alloy exhibited evidence of compositional modulation, indicating that nm-scale phase separation had occurred at local regions. In this study, the role played by nm-scale phase separation on the plasticity was investigated in terms of structural disordering and shear localization in order to better understand the structural origin of the enhanced plasticity shown by the developed alloy.

引用

页码：1 / 7

页数：7

共 27 条

[1] Plastic flow softening in a bulk metallic glass [J].

Bhowmick, R. ;

Raghavan, R. ;

Chattopadhyay, K. ;

Ramamurty, U. .

ACTA MATERIALIA, 2006, 54 (16) :4221-4228

[2] Local order influences initiation of plastic flow in metallic glass: Effects of alloy composition and sample cooling history [J].

Cheng, Y. Q. ;

Cao, A. J. ;

Sheng, H. W. ;

Ma, E. .

ACTA MATERIALIA, 2008, 56 (18) :5263-5275

[3] Molecular-dynamics study of ductile and brittle fracture in model noncrystalline solids [J].

Falk, ML .

PHYSICAL REVIEW B, 1999, 60 (10) :7062-7070

[4] Dynamics of viscoplastic deformation in amorphous solids [J].

Falk, ML ;

Langer, JS .

PHYSICAL REVIEW E, 1998, 57 (06) :7192-7205

[5] Fe- and Co-based bulk glassy alloys with ultrahigh strength of over 4000 MPa [J].

Inoue, A. ;

Shen, B. L. ;

Chang, C. T. .

INTERMETALLICS, 2006, 14 (8-9) :936-944

[6] Super-high strength of over 4000 MPa for Fe-based bulk glassy alloys in [(Fe1-x,COx)0.75B0.2Si0.05]96Nb4 system [J].

Inoue, A ;

Shen, BL ;

Chang, CT .

ACTA MATERIALIA, 2004, 52 (14) :4093-4099

[7] A Cu-based amorphous alloy with a simultaneous improvement in its glass forming ability and plasticity [J].

Kim, Kyou-Hyun ;

Lee, Seok-Woo ;

Ahn, Jae-Pyoung ;

Fleury, Eric ;

Kim, Yu-Chan ;

Lee, Jae-Chul .

METALS AND MATERIALS INTERNATIONAL, 2007, 13 (01) :21-24

[8] Origin of the simultaneous improvement of strength and plasticity in Ti-based bulk metallic glass matrix composites [J].

Kim, YC ;

Fleury, E ;

Lee, JC ;

Kim, DH .

JOURNAL OF MATERIALS RESEARCH, 2005, 20 (09) :2474-2479

[9] REACTION KINETICS IN DIFFERENTIAL THERMAL ANALYSIS [J].

KISSINGER, HE .

ANALYTICAL CHEMISTRY, 1957, 29 (11) :1702-1706

[10]

Lee JC, 2007, J MATER RES, V22, P3087, DOI [10.1557/JMR.2007.0382, 10.1557/jmr.2007.0382]

← 1 2 3 →