A Preliminary Study of Deformation Behavior of Friction Stir Welded Ti-6Al-4V

被引：18

作者：

Wang, Jiye ^{[1
]}

Su, Jianqing ^{[2
]}

Mishra, Rajiv S. ^{[2
]}

Xu, Ray ^{[3
]}

Baumann, John A. ^{[4
]}

机构：

[1] Missouri Univ Sci & Technol, Dept Mat Sci & Engn, Rolla, MO 65409 USA

[2] Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76203 USA

[3] Rolls Royce Corp, Indianapolis, IN 46241 USA

[4] Boeing Co, St Louis, MO 63166 USA

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2014年 / 23卷 / 08期

关键词：

Friction stir welding; Titanium; Mechanical properties; HOT-WORKING; MECHANICAL-PROPERTIES; BETA MICROSTRUCTURE; GLOBULARIZATION; ALLOY; EVOLUTION; KINETICS; FLOW;

D O I：

10.1007/s11665-014-1075-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A preliminary study of deformation behavior of friction stir welded (FSW) Ti-6Al-4V was performed using two different tools with cylindrical and stepped spiral pin design for the welding process. The nugget regions experienced temperature above beta transus and the matrix transformed to fine acicular alpha during cooling of the nugget. By using stepped spiral pin design, a local region with much refined grain structure and significant tool debris particles were observed. Room temperature tensile test showed increased strength and decreased ductility in the material from this region. Fractographic analysis revealed that tool debris particles served as void nucleation sites. Tensile tests of FSW material were carried out at 625 A degrees C in the strain rates of 3 x 10(-4) and 1 x 10(-3) s(-1). The strength was higher as compared to the as-received material. Microstructural evolution during tensile test was also investigated. Results showed that dynamic globularization occurred during the high temperature tensile test.

引用

页码：3027 / 3033

页数：7

共 35 条

[1] Evolution of microstructure, macrotexture and microtexture during hot rolling of Ti-6Al-4V [J].

Ari-Gur, P ;

Semiatin, SL .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 257 (01) :118-127

[2] Loss of coherency and interphase α/β angular deviation from the Burgers orientation relationship in a Ti-6Al-4V alloy compressed at 800 °C [J].

Cabibbo, M. ;

Zherebtsov, S. ;

Mironov, S. ;

Salishchev, G. .

JOURNAL OF MATERIALS SCIENCE, 2013, 48 (03) :1100-1110

[3] Peak temperatures during friction stir welding of Ti-6Al-4V [J].

Edwards, P. ;

Ramulu, M. .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2010, 15 (06) :468-472

[4] Identification of Process Parameters for Friction Stir Welding Ti-6Al-4V [J].

Edwards, P. ;

Ramulu, M. .

JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 2010, 132 (03) :0310061-03100610

[5] Investigation of microstructure, surface and subsurface characteristics in titanium alloy friction stir welds of varied thicknesses [J].

Edwards, P. D. ;

Ramulu, M. .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2009, 14 (05) :476-483

[6] Mechanical Performance of Heat Treated Ti-6Al-4V Friction Stir Welds [J].

Edwards, Paul ;

Petersen, Marc ;

Ramulu, M. ;

Boyer, R. .

COST-AFFORDABLE TITANIUM III, 2010, 436 :213-+

[7] Microstructural characteristics and mechanical properties of friction stir welded joints of Ti-6Al-4V titanium alloy [J].

Liu, H. J. ;

Zhou, L. ;

Liu, Q. W. .

MATERIALS & DESIGN, 2010, 31 (03) :1650-1655

[8] Microstructural evolution mechanism of hydrogenated Ti-6Al-4V in the friction stir welding and post-weld dehydrogenation process [J].

Liu, H. J. ;

Zhou, L. ;

Liu, Q. W. .

SCRIPTA MATERIALIA, 2009, 61 (11) :1008-1011

[9]

Lutjering G., 2003, ENG MAT PRO, P289

[10] Crystallography of transformed β microstructure in friction stir welded Ti-6Al-4V alloy [J].

Mironov, S. ;

Zhang, Y. ;

Sato, Y. S. ;

Kokawa, H. .

SCRIPTA MATERIALIA, 2008, 59 (05) :511-514

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