Nissan just announced the expanded use of an Advanced High Strength Steel (AHSS) that has a tensile strength of 1.2GPa (= 1,200MPa = 175 ksi = 175,000 psi). This follows their initial announcement in October 2011.
Things we’ve learned:
The complex microstructure consists of 2 hard phases and 1 soft phase.
The scale of the microstructure is micron / submicron.
A new welding process needed to be developed to accommodate the microstructure.
This new grade of steel was developed jointly by Nippon Steel, Kobe Steel, and Nissan. (Nippon recently merged with Sumitomo Steel to form Nippon Steel & Sumitomo Metal Corporation)
Nissan plans to use AHSS on up to 25% of all body parts.
This is a great technical achievement, but a bigger hurdle may have been in the collaborative alloy development approach: two steel competitors partnered with one of their customers.
How will this play out? Will the steel companies be allowed to supply the grade to other automakers? Will the steel companies be allowed to market the grade through their partners? Nippon has Joint Ventures with ArcelorMittal in the USA and Ternium in Mexico; Kobe has Joint Ventures with US Steel.
Danny received his Bachelor of Science degree in Materials Science and Engineering from the Johns Hopkins University in Baltimore, MD, and a Master of Science and Doctor of Philosophy degrees in Materials Engineering from Drexel University in Philadelphia, PA. While at Drexel, Danny held engineering and research positions with the David Taylor Research Center (Annapolis, MD) and Hoeganaes Corporation (Riverton, NJ).
After receiving his Doctorate, Danny started at the LTV Steel Technology Center (Independence, OH), where he was a member of the Customer Technical Center, focused on customer-based problem solving in the areas of corrosion, formability, and surface contaminants. He then transferred into the Automotive Development Group, focused on formability analysis and training; materials selection and optimization; tooling development and production launches for new vehicle programs; customer materials & manufacturing cost reduction efforts; forming/denting/structural computer simulation; and technical awareness and communications with the automotive manufacturers and their Tier One / Tier Two companies. Danny's first position in the ADG was as the engineer responsible for all transplant accounts, and then moved to having responsibility for the Ford Motor account, before being promoted to the Group Manager. During his time with LTV Steel, Danny was active in AISI and Auto/Steel Partnership activities, serving as Chairman of the Standardized Dent Resistance Test Project as well as participating in other committees. Danny is the founding member of Engineering Quality Solutions, Inc.
Danny has over a dozen publications and is a member of ASM International, SAE International, and is the President of the North American Deep Drawing Research Group (www.NADDRG.org).