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Evanston, IL, United States

Olson G.B.,Questek Innovations Llc | Olson G.B.,Northwestern University
Acta Materialia | Year: 2013

Our unique depth of scientific knowledge has allowed ferrous metallurgy to lead the development of a successful computational materials design methodology grounded in a system of fundamental databases. Expansion of this approach to embrace acceleration of the full development and qualification cycle has resulted in the flight of the first fully computationally designed and qualified material. The example of ferrous alloys provides a template for a general methodology of computational design for all materials. © 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. Source


Patent
Questek Innovations Llc | Date: 2013-02-28

Provided herein are titanium alloys that can achieve a combination of high strength and high toughness or elongation, and a method to produce the alloys. By tolerating iron, oxygen, and other incidental elements and impurities, the alloys enable the use of lower quality scrap as raw materials. The alloys are castable and can form -phase laths in a basketweave morphology by a commercially feasible heat treatment that does not require hot-working or rapid cooling rates. The alloys comprise, by weight, about 3.0% to about 6.0% aluminum, 0% to about 1.5% tin, about 2.0% to about 4.0% vanadium, about 0.5% to about 4.5% molybdenum, about 1.0% to about 2.5% chromium, about 0.20% to about 0.55% iron, 0% to about 0.35% oxygen, 0% to about 0.007% boron, and 0% to about 0.60% other incidental elements and impurities, the balance of weight percent comprising titanium.


Patent
Questek Innovations Llc | Date: 2011-04-29

Provided herein are titanium alloys that can achieve a combination of high strength and high toughness or elongation, and a method to produce the alloys. By tolerating iron, oxygen, and other incidental elements and impurities, the alloys enable the use of lower quality scrap as raw materials. The alloys are castable and can form -phase laths in a basketweave morphology by a commercially feasible heat treatment that does not require hot-working or rapid cooling rates. The alloys comprise, by weight, about 3.0% to about 6.0% aluminum, 0% to about 1.5% tin, about 2.0% to about 4.0% vanadium, about 0.5% to about 4.5% molybdenum, about 1.0% to about 2.5% chromium, about 0.20% to about 0.55% iron, 0% to about 0.35% oxygen, 0% to about 0.007% boron, and 0% to about 0.60% other incidental elements and impurities, the balance of weight percent comprising titanium.


Patent
Questek Innovations Llc | Date: 2012-09-25

In an aspect the disclosure relates to an alloy comprising, by weight, about 0.15% to about 1.00% zinc, 0% to about 0.20% gallium, and the balance aluminum and incidental elements and impurities, wherein the alloy has a corrosion potential from about 0.85 V to about 0.73 V relative to a saturated calomel electrode.


A martensitic stainless steel alloy is strengthened by copper-nucleated nitride precipitates. The alloy includes, in combination by weight percent, about 10.0 to about 12.5 Cr, about 2.0 to about 7.5 Ni, up to about 17.0 Co, about 0.6 to about 1.5 Mo, about 0.5 to about 2.3 Cu, up to about 0.6 Mn, up to about 0.4 Si, about 0.05 to about 0.15 V, up to about 0.10 N, up to about 0.035 C, up to about 0.01 W, and the balance Fe and incidental elements and impurities. The nitride precipitates may be enriched by one or more transition metals.

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