Investigation of Mechanical Properties of Butt Joint Form in CMT-Brazed Joints of DP1000 Steel Plates Using Different Current Intensity

Öz

In this study, DP 1000 (Dual Phase) steel plates having 1.2 mm thickness were joined by copper-based (CuAl8) wire in CMT-brazing (Cold Metal Transfer) technique. Specimens were prepared in joining forms as butt joint. CMT-Brazing operations were done with nine different CMT-Brazing current intensity of 40, 45, 50, 55, 60, 65, 70, 75 and 80 A. CuAl8 wire composed largely of copper serves as the filler metal were used. Having accomplished the CMT-brazing operations; tensile properties of joints were detected, and micro and macro-structures of joints were investigated in order to see the joinability of DP 1000 steel by CMT-brazing technique.

Anahtar Kelimeler

• DP1000 Steel,CMT-Brazing,Cold Metal Transfer

Investigation of Mechanical Properties of Butt Joint Form in CMTBrazed Joints of DP1000 Steel Plates Using Different Current Intensity

Abstract

In this study, DP 1000 (Dual Phase) steel plates having 1.2 mm thickness were joined by copper-based (CuAl8) wire in CMT-brazing (Cold Metal Transfer) technique. Specimens were prepared in joining forms as butt joint. CMT-Brazing operations were done with nine different CMT-Brazing current intensity of 40, 45, 50, 55, 60, 65, 70, 75 and 80 A. CuAl8 wire composed largely of copper serves as the filler metal were used. Having accomplished the CMT-brazing operations; tensile properties of joints were detected, and micro and macro-structures of joints were investigated in order to see the joinability of DP 1000 steel by CMT-brazing technique.

Keywords

• DP1000 Steel,CMT-Brazing,Cold Metal Transfer

Kaynakça

1. Aslanlar S., 2006. The Effect of Nucleus Size on Mechanical Properties in Electrical Resistance Spot Welding of Sheets Used in Automotive Industry. Mater. Des. 27, 125-131.
2. Farabi N., Chen D.L., Zhou Y., 2011. Microstructure and Mechanical Properties of Laser Welded Dissimilar DP600/DP980 Dual-Phase Steel Joints. J. Alloys Compd. 509,982-989.
3. Jia Q., Guo W., Li W., Zhu Y., Peng P., Zou G., 2016. Microstructure and Tensile Behavior of Fiber Laser-Welded Blanks of DP600 and DP980 Steels. J. Mater. Process. T. 236, 73-83.
4. Lee H., Kim C., Song J. 2015. An Evaluation of Global and Local Tensile Properties of Friction-Stir Welded DP980 dual-Phase Steel Joints Using a Digital Image Correlation Method. Materials 8, 8424-8436.
5. Ma J., Kong F., Liu W., Carlson B., Kovacevic R., 2014. Study on the Strength and Failure Modes of Laser Welded Galvanized DP980 Steel Lap Joints. J. Mater. Process. T. 214, 1696-1709.
6. Ozsarac U., 2012. Investigation of Mechanical Properties of Galvanized Automotive Sheets Joined by Resistance Spot Welding. J. Mater. Eng. Perform. 21, 748-755.
7. Xu W., Westerbaan D., Nayak S.S., Chen D.L., Goodwin F., Biro E., Zhou Y., 2012. Microstructure and Fatigue Performance of Single and Multiple Linear Fiber Lase Welded DP980 Dual-Phase Steel. Mat. Science and Eng. 553, 51-58.
8. Wang J., Yang L., Sun M., Liu T., Li H., 2016. A Study of the Softening Mechanisms of Laser-Welded DP1000 Steel. Materials and Design 97, 118-125.

9. Wang J., Yang L., Sun M., Liu T., Li H., 2016. Effect of Energy Input on the Microstructure and Properties of Butt Joints in DP1000 Steel Laser Welding. Mater. Des. 90, 642-649.