Cryogenic properties of Al-Mg-Sc-Zr friction-stir welds

被引：25

作者：

Zhemchuzhnikova, D. ^{[1
]}

Malopheyev, S. ^{[1
]}

Mironov, S. ^{[2
]}

Kaibyshev, R. ^{[1
]}

机构：

[1] Belgorod State Univ, Lab Mech Properties Nanoscale Mat & Superalloys, Belgorod 308015, Russia

[2] Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Sendai, Miyagi 9808579, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 598卷

关键词：

Aluminum alloys; Welding; Grain refinement; Mechanical characterization; Fracture; ALLOY; SUPERPLASTICITY; BEHAVIOR;

D O I：

10.1016/j.msea.2014.01.060

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, the effect of friction-stir welding (FSW) on the microstructure and cryogenic properties of an Al-Mg-Sc-Zr alloy was studied. The produced friction-stir joints demonstrated both excellent static and dynamic mechanical properties at cryogenic temperatures. The joint efficiency for the yield strength during transverse tensile tests was in the range of 95-100%, whereas the impacts fracture toughness in the stir zone was found to be superior compared with that in the base material. The high level of the mechanical properties was attributed to the preservation of Al-3(Sc,Zr) dispersoids, extensive grain refinement and the breaking of the continuous grain boundary network of the coarse Al6Mn particles during FSW. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：387 / 395

页数：9

共 22 条

[1]

[Anonymous], 2006, LIGHT ALLOYS TRADITI

[2] Strengthening mechanisms of an Al-Mg-Sc-Zr alloy [J].

Kendig, KL ;

Miracle, DB .

ACTA MATERIALIA, 2002, 50 (16) :4165-4175

[3] Inverse temperature dependence of toughness in an ultrafine grain-structure steel [J].

Kimura, Yuuji ;

Inoue, Tadanobu ;

Yin, Fuxing ;

Tsuzaki, Kaneaki .

SCIENCE, 2008, 320 (5879) :1057-1060

[4] Thermal stability of friction stir processed ultrafine grained Al-Mg-Sc alloy [J].

Kumar, N. ;

Mishra, R. S. .

MATERIALS CHARACTERIZATION, 2012, 74 :1-10

[5] Microstructure and mechanical behavior of friction stir processed ultrafine grained Al-Mg-Sc alloy [J].

Kumar, N. ;

Mishra, R. S. ;

Huskamp, C. S. ;

Sankaran, K. K. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (18) :5883-5887

[6] Critical grain size for change in deformation behavior in ultrafine grained Al-Mg-Sc alloy [J].

Kumar, N. ;

Mishra, R. S. ;

Huskamp, C. S. ;

Sankaran, K. K. .

SCRIPTA MATERIALIA, 2011, 64 (06) :576-579

[7] Achieving exceptionally high superplasticity at high strain rates in a micrograined Al-Mg-Sc alloy produced by friction stir processing [J].

Liu, F. C. ;

Ma, Z. Y. .

SCRIPTA MATERIALIA, 2008, 59 (08) :882-885

[8] High Strain Rate Superplasticity in a Micro-grained Al-Mg-Sc Alloy with Predominant High Angle Grain Boundaries [J].

Liu, F. C. ;

Ma, Z. Y. ;

Zhang, F. C. .

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2012, 28 (11) :1025-1030

[9] Microstructural evolution in recrystallized and unrecrystallized Al-Mg-Sc alloys during superplastic deformation [J].

Liu, F. C. ;

Xue, P. ;

Ma, Z. Y. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 547 :55-63

[10] Superplasticity governed by effective grain size and its distribution in fine-grained aluminum alloys [J].

Liu, F. C. ;

Ma, Z. Y. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 530 :548-558

← 1 2 3 →