Microstructure and Hardness Behavior of Friction Stir Welds of 2 GPa Strength Hot Press Forming Steel

被引：0

作者：

Park, Hanji ^{[1
,2
]}

Yoon, Jinyoung ^{[3
]}

Kang, Minjung ^{[4
]}

Kim, Cheolhee ^{[1
,4
]}

机构：

[1] Portland State Univ, Dept Mech & Mat Engn, Portland, OR 97201 USA

[2] Inha Univ, Adv Mat Proc Res Inst, Incheon 22201, South Korea

[3] Inst Adv Engn, Al & Mech Syst Ctr, Yongin 17180, South Korea

[4] Korea Inst Ind Technol, Welding & Joining Res Grp, Incheon 21999, South Korea

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2024年 / 33卷 / 23期

关键词：

dynamic recrystallization; friction stir welding; hardness; hot press forming steel; intercritical heat-affected zone; HEAT-GENERATION; AL-ALLOY; ZONE;

D O I：

10.1007/s11665-023-08372-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hot press forming (HPF) steels with a full martensite structure and 2.0 GPa strength (HPF2.0) were friction stir welded as bead-on-plate using a WC-Co12% tool. The stir zone was composed of recrystallized grains of various sizes and had comparable to or higher hardness than the base material. However, the intercritical heat-affected zone (ICHAZ) and subcritical HAZ experience softening. During the tensile test, fractures consistently occurred at the softened HAZ. The minimum hardness of the ICHAZ in the friction stir welds was 300 HV, which was similar to that in the arc welds with polygonal ferrite (328 HV) and lower than that in the laser welds with needle-like ferrite (400 HV). Remarkably, the softened width of the friction stir welds was narrower than half that of the arc welds. These results confirm the possibility of expanding the application of friction stir welding to next-generation HPF steels.

引用

页码：13067 / 13078

页数：12

共 43 条

[1] Defects in Friction Stir Welding of Steel [J].

Al-Moussawi M. ;

Smith A.J. .

Metallography, Microstructure, and Analysis, 2018, 7 (2) :194-202

[2] Thermo-mechanical and experimental analysis of double pass line heating [J].

Biswas P. ;

Mandal N.R. ;

Sha O.P. ;

Mahapatra M.M. .

Journal of Marine Science and Application, 2011, 10 (2) :190-198

[3] Friction stir welding of high carbon steel with excellent toughness and ductility [J].

Chung, Y. D. ;

Fujii, H. ;

Ueji, R. ;

Tsuji, N. .

SCRIPTA MATERIALIA, 2010, 63 (02) :223-226

[4] Transformation in stir zone of friction stir welded carbon steels with different carbon contents [J].

Cui, Ling ;

Fujii, Hidetoshi ;

Tsuji, Nobuhiro ;

Nakata, Kazuhiro ;

Nogi, Kiyoshi ;

Ikeda, Rinsei ;

Matsushita, Muneo .

ISIJ INTERNATIONAL, 2007, 47 (02) :299-306

[5] Friction stir spot welding of AA 1050 Al alloy and hot stamped boron steel (22MnB5) [J].

da Silva, A. A. M. ;

Aldanondo, E. ;

Alvarez, P. ;

Arruti, E. ;

Echeverria, A. .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2010, 15 (08) :682-687

[6] Influences of pin profile and rotational speed of the tool on the formation of friction stir processing zone in AA2219 aluminium alloy [J].

Elangovan, K. ;

Balasubramanian, V. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 459 (1-2) :7-18

[7] Friction stir welding of carbon steels [J].

Fujii, Hidetoshi ;

Cui, Ling ;

Tsuji, Nobuhiro ;

Maeda, Masakatsu ;

Nakata, Kazuhiro ;

Nogi, Kiyoshi .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 429 (1-2) :50-57

[8] Friction stir welding: Process, automation, and control [J].

Gibson, B. T. ;

Lammlein, D. H. ;

Prater, T. J. ;

Longhurst, W. R. ;

Cox, C. D. ;

Ballun, M. C. ;

Dharmaraj, K. J. ;

Cook, G. E. ;

Strauss, A. M. .

JOURNAL OF MANUFACTURING PROCESSES, 2014, 16 (01) :56-73

[9] INFLUENCE OF THE SOFT ZONE ON THE STRENGTH OF WELDED MODERN HSLA STEELS [J].

Hochhauser, F. ;

Ernst, W. ;

Rauch, R. ;

Vallant, R. ;

Enzinger, N. .

WELDING IN THE WORLD, 2012, 56 (5-6) :77-85

[10] Failure Mode and Fatigue Behavior of Dissimilar Friction Stir Spot Welds in Lap-Shear Specimens of Transformation-Induced Plasticity Steel and Hot-Stamped Boron Steel Sheets [J].

Hong, S. H. ;

Sung, S. -J. ;

Pan, J. .

JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME, 2015, 137 (05)

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