This article summarizes a paper entitled, "Higher than Expected Strengths from Dissimilar Configuration Advanced High-Strength Steel Spot Welds", by E. Biro, et al.B-6 This study shows that the cross tension strength (CTS) is always higher than the strength expected...
A variety of steel grades are used to manufacture vehicle body structures and closures. Welding dissimilar Advanced High-Strength Steels (AHSS) in three and four layer stack-ups requires special considerations. In this section of the Guidelines are articles...
This article is the summary of a paper entitled, "HAZ Softening of RSW of 3T Dissimilar Steel Stack-up", Y. Lu., et al.L-15 Electromechanical Model The study discusses the development of a 3D fully coupled thermo-electromechanical model for RSW of a three sheet (3T)...
The advantages of numerical simulations for resistance welding are obvious for saving time and reducing costs in product developments and process optimizations. Today’s modeling techniques can predict temperature, microstructure, stress, and hardness distribution in...
Understanding LME Controlling LME Preventing LME Related Articles Journal Publications Download the Study (opens worldautosteel.org website in a new tab) Auto/Steel Partnership LME Testing and Procedures top-of-page Results of a Three-Year LME Study WorldAutoSteel...
Spot Welding of Three Steel Sheets with Large Thickness Ratios Application of Spot Welding to Hollow Members Spot Welding of Three Steel Sheets with Large Thickness Ratios Car parts such as side panels are fabricated by spot welding three steel sheets together....
It has been a long-standing challenge to extend the usage of the very high-strength steels in hydrogen-rich environments, given that these steels are prone to Hydrogen Cracking, due to their increased mechanical strength. Hydrogen embrittlement (HE) is known to be a...
The joint strength in the peeling direction begins to decrease when the Base Metal (BM) strength exceeds 780 MPa. It has been found that the Cross-Tension Strength (CTS) of HSS joints could be improved by using appropriate conditions for post-heat conduction. Unlike...
In a comparative studyL-6 of the spot weld fatigue strength of various steels grades, some of which included grades such as 1.33-mm Fully Stabilized (FS) 300/420 (HDGA), 1.35-mm DP 340/600 (HDGA), 1.24-mm TRIP 340/600 (HDGA), and 1.41-mm TRIP 340/600 (HDGA), it was...
Weld-Shear Tension Strength Fracture Modes Peel and chisel testing of resistance spot welds (RSW) in AHSS may produce fracture through the weld during destructive or teardown testing. This type of fracture becomes more common with increasing sheet thickness and BM...