Characterization of the Welding Zone of Automotive Sheets of Different Thickness (DP600 and DP800) Joined by Resistance Spot Welding

被引：8

作者：

Aydin, Kemal ^{[1
]}

Hidiroglu, Mehtap ^{[2
]}

Kahraman, Nizamettin ^{[3
]}

机构：

[1] Gumushane Univ, Dept Elect & Automat, Gumushane, Turkey

[2] Coskunoz Kalip Makina Sanayi & Ticaret Anonim Sir, Bursa, Turkey

[3] Karabuk Univ, Dept Mfg Engn, Karabuk, Turkey

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2022年 / 75卷 / 05期

关键词：

Resistance spot welding; DP600; DP800; Dual-phase steel; DUAL-PHASE STEEL; LOW-CARBON STEEL; MECHANICAL-PROPERTIES; FAILURE MODE; TENSILE PROPERTIES; WELDED-JOINTS; MICROSTRUCTURE; STRENGTH; MARTENSITE; PERFORMANCE;

D O I：

10.1007/s12666-021-02482-5

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Automotive industry in recent years, has gained great importance. In line with this, DP600 and DP800 dual-phase steels and the electrical resistance spot welding method were used in the study. During the experimental trials, different welding currents (6, 7, and 8 kA) were selected and all other welding parameters were kept constant. The effects of the welding parameters on microstructure, hardness, tensile-shear, and cross-tensile strength were analyzed. In the phase measurements, 27.06-29.97% martensite and 70.73-73.85% ferrite phases were found. When the hardness values in the HAZ regions were examined, it was seen that the highest hardness values were 356 +/- 5 HV in the DP600 and 451 +/- 5 HV in the DP800 with a current intensity of 6 kA. Consequently, it was determined that tensile-shear and cross-tensile strengths had increased in parallel with the increase in the welding current and the highest values were determined as 8 kA-15.91 kN in tensile shear and 8 kA-4.91 kN in cross-tensile strength.

引用

页码：1279 / 1291

页数：13

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