Evaluation of Microstructural and Mechanical Behavior of AHSS CP780 Steel Welded by GMAW-Pulsed and GMAW-Pulsed-Brazing Processes

被引：8

作者：

Jadir Romero-Orozco, Alan ^{[1
]}

Jaime Taha-Tijerina, Jose ^{[2
,3
]}

De Luna-Alanis, Rene ^{[4
]}

Hugo Lopez-Morelos, Victor ^{[1
]}

Del Carmen Ramirez-Lopez, Maria ^{[1
]}

Salazar-Martinez, Melchor ^{[5
]}

Fernando Curiel-Lopez, Francisco ^{[1
]}

机构：

[1] Univ Michoacana, Inst Invest Metalurgia & Mat, Morelia 58000, Michoacan, Mexico

[2] Metalsa, Adv Mat Res & Innovat Dept, Via Innovac, Apodaca 66628, Mexico

[3] Univ Texas Rio Grande Valley, Engn Technol Dept, Brownsville, TX 78520 USA

[4] Ctr Innovac & Desarrollo Tecnol Soldadura CIDTS, Sta Maria Rivera 901, Cooperativa La Union 66129, Santa, Mexico

[5] Inst Politecn Nacl, Ctr Innovac & Integrac Tecnol Avanzadas, Unidad Papantla Veracruz, Av Inst Politecn Nacl S-N, Papantla 93400, Mexico

来源：

METALS | 2022年 / 12卷 / 03期

关键词：

GMAW-P-brazing; microstructure; CP steel; mechanical properties; zinc; HIGH-STRENGTH STEELS; HAZ MICROSTRUCTURE; HEAT INPUT; TOUGHNESS; ALUMINUM; MN; SI;

D O I：

10.3390/met12030530

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Joints of complex phase 780 (CP-780) advanced high strength steel (AHSS) were carried out by using an ER-CuAl-A2 filler metal for the gas metal arc welding pulsed brazing (GMAW-P-brazing) process and the ER-80S-D2 for the GMAW-P process employing two levels of heat input. The phases in the weld bead and HAZ were analyzed, and the evaporation of zinc by means of scanning electron microscopy (SEM) was also monitored. The mechanical properties of the welded joints were evaluated by tension, microhardness and vertical impact tests. It was found that there was greater surface Zn evaporation in the joints welded with the GMAW-P process as compared to the GMAW-P-brazing process. The best results in tensile strength were observed in the joints welded with GMAW-P-brazing process, which increased by similar to 68% with respect to those of the GMAW-P. This behavior can be attributed to the formation of an intermetallic complex compound Cu-Al-Fe in the fusion line.

引用

页数：16

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