Browse Publications Technical Papers 2008-01-1132
2008-04-14

Seam Welding and Cooling-Control Heat-Treatment of Martensitic Stainless Steel 2008-01-1132

From a production standpoint, many high-strength welded (GTAW, GMAW, laser, etc.) assemblies require post-weld mechanical forming operations. Complications often arise when using Advanced High Strength Steels (AHSS), whose chemical composition may lend it to fully martensitic, extremely brittle as-welded microstructures. Martensitic Stainless Steels (MSS) are a particular class of AHSS susceptible to high fusion and heat-affected zone (HAZ) hardness after welding.
The focus of this study is to provide a relatively straightforward way to improve the ductility of as-welded air-hardenable martensitic stainless steel joints without subjecting the weld to a separate costly and time-consuming off-line pre-or-post weld heat treatment. The additional ductility afforded by such a method can greatly expand the design opportunities using commercially available martensitic stainless alloys, which are capable of strengths in excess of 1400 MPa after a final solution heat treatment.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X