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newer AHSS, as well as “how to form and join them so that we can ease the transition from the mild and high- strength steels that the tier supply com- munity has been using,” says Anderson. Expect such training to include dis- cussions of tooling.
“We want people to understand how the use of AHSS affects tool design and performance,” he explains. “Tooling may be outfitted with inserts that can better handle these stronger materi- als and not wear as quickly, or if the inserts do wear, it’s only a matter of changing them out and not having to rebuild an entire die.
”The original implementation and use of AHSS occurred at the OEM level,” Anderson continues, “but due to the increased volume of material and applications, independent stampers and the Tier Ones and Twos have been introduced to these materials and must deal with a learning curve. Anderson andtheA/SP,throughtraining,hopeto flatten that curve.
Hydroforming is finding greater use in forming AHSS. Case in point is the 2015 Ford Edge, where DP 1000 grades are tube-hydroformed for roof rails.
Martensitic DP1000 and Boron
DP800
DP600
Mild
Bake Hard
High-Strength Low-Alloy
What’s Next?
Looking forward, Anderson sees how the next generation of AHSS may allow for cold stamping to replace hot stamping in some applications while imparting the same advantages, but that’s at least a few years away.
Research and development of strong, low-carbon-equivalent steels, now underway at the A/SP, may ease forming and joining issues, thus deliv- ering a welcomed improvement upon higher-carbon-content materials.
In the very short-term future, 2016’s Great Designs in Steel, May 11, in Livonia , MI, is expected to high- light a number of new and innova- tive AHSS automotive applications, including a redesign of Nissan’s full- sized pickup that features higher- strength-steel framing, and side struc- tures incorporating 980 MPa steel. Attendees also will learn more about AHSS use in the 2016 Chevy Malibu, Lincoln Continental D544, Honda Civic and Volvo XC90. MF
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