Technological Comparison for Dual Phase and Advanced High Strength Low Alloy Steels Regarding Weldability and Mechanical Properties 2014-01-0988
This paper presents a technological comparison of weldability and mechanical properties between a dual phase steel (DP) and an advanced high strength low alloy steel (AHSLA) used for automotive structural parts in order to demonstrate some unclear characteristics of each. Samples were spot welded and had their hardness and microstructure analyzed, also a shear test was applied on the weld button area. The edge stretchability was analyzed using hole expansion tests and tensile tests to determine the tensile and yield strength, anisotropic coefficients and total elongation. Data were used to estimate crash energy absorption. The results showed an AHSLA steel with higher than typical ductility. Finally, while DP showed improved stretchability, it was also concluded that such AHSLA could perform better bendability, drawability, flangeability and weldability.
Citation: Lopes, A., Colosio, M., and Castillo, J., "Technological Comparison for Dual Phase and Advanced High Strength Low Alloy Steels Regarding Weldability and Mechanical Properties," SAE Technical Paper 2014-01-0988, 2014, https://doi.org/10.4271/2014-01-0988. Download Citation
Author(s):
Andre Sereno Lopes, Marco Colosio, Jose Castillo
Affiliated:
Brasmetal Waelzholz, General Motors do Brasil Ltda, General Motors Co.
Pages: 7
Event:
SAE 2014 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Tensile strength
Steel
Alloys
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