About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Steels for Sustainable Development IV
|
| Presentation Title |
Influence of Residual Copper on the Weldability and Weld Performance of Low Carbon Steels |
| Author(s) |
Jonah Klemm-Toole, Henry Geerlings, Mohan Subramanian, Grant Thomas, Amy Clarke, Kester Clarke |
| On-Site Speaker (Planned) |
Jonah Klemm-Toole |
| Abstract Scope |
Steel making utilizing 100% scrap enables cost and emissions reductions, but the accumulation of residual elements, such as copper, in the steel scrap stream can lead to unacceptably high levels. While copper induced hot shortness is well known during hot rolling, its effect on subsequent weldability is not well understood. In this work, we examine the effects of increased residual copper content (up to 0.85 wt%) on the microstructure, mechanical properties, and weldability of resistance spot welded and autogenous laser welded low carbon sheet steels. The results show that copper content significantly affects the mechanical properties of the base metal and welds, where higher copper contents lead to higher strength and lower ductility. The results of this work show that relatively high copper contents (~ 1 wt%) can be accommodated without significantly decreasing weldability and weld performance provided base metal processing and welding parameters are sufficiently modified. |