Novelis, Inc.

Peter Lloyd Redmond

Robert Bruce Wagstaff

Theresa Elizabeth Macfarlane

Theresa Elizabeth MacFarlane

Luis Fanor Vega

Changook Son

Rajeev G Kamat

ChangOok Son

Yudie Yuan

Aude Celine Despois

Samuel Robert Wagstaff

Milan Felberbaum

Liangliang Li

Guillaume Florey

Sazol Kumar Das

Juergen Timm

Duane E Bendzinski

Rashmi Ranjan Mohanty

Tudor Piroteala

Rajasekhar Talla

David Leyvraz

Rahul Vilas Kulkarni

Aurèle Mariaux

Julie Richard

Julio Malpica

Alp Manavbasi

Yi Wang

Cedric Wu

Dechao Lin

Dewei Zhu

Lasitha Cumaranatunge

Emanuel Beck

Kevin Mark Johnson

Amanda Owens

Brian Paradis

Kumar Sundaram

Thomas J Beck

John Anthony Hunter

Provided herein are new aluminum alloys comprising Ca, Mg and/or Zn and new coated aluminum alloys comprising surface layers (e.g., coatings) comprising Ca, Mn, Zn, and/or Ni that can be used in aluminum alloy products, such as clad layers. Also provided are methods of making these aluminum alloys, coated aluminum alloys, and clad layers, as well as clad products. These alloys, coated alloys, clad layers, and products possess a combination of strength and other key attributes, such as corrosion resistance, formability, and applicability of paint line pretreatments. The materials can be used in a variety of applications, including automotive, transportation, and electronics applications.

Aluminum alloys and coated aluminum alloys with high corrosion resistance and methods of making the same

Described herein are methods of processing heat treatable aluminum alloys using an accelerated aging step, along with aluminum alloy products prepared according to the methods. The methods of processing the heat treatable alloys described herein provide a more efficient method for producing aluminum alloy products having the desired strength and formability properties. For example, conventional methods of processing alloys can require 24 hours of aging. The methods described herein, however, substantially reduce the aging time, often requiring eight hours or less of aging time.

Rapidly aged, high strength, heat treatable aluminum alloy products and methods of making the same

Disclosed are aluminum alloy products and methods of making and processing such products. Thus, disclosed are aluminum alloy products exhibiting controllable surface properties, including excellent bond durability, low contact resistance, and corrosion resistance. Aluminum alloy products described herein include a migrant element, a subsurface portion having a concentration of the migrant element, and a bulk portion having a concentration of the migrant element. The aluminum alloy product comprises an enrichment ratio of 4.0 or less, wherein the enrichment ratio is a ratio of the migrant element concentration in the subsurface portion to the concentration in the bulk portion. Additionally, the aluminum alloy products surface and/or subsurface can contain phosphorus (e.g., elemental phosphorus or oxidized phosphorus). The phosphorus containing surface provides reduced electronic stress on an electrode tip of a resistance spot welding apparatus, and an extended service lifetime (e.g., weld cycles to failure) of the electrode tip.

Aluminum alloy products exhibiting improved bond durability and methods of making the same

Described are techniques for treating metals by exposing the metals to reactive solutions to reduce a temperature of the metal and to modify a surface of the metal through chemical reaction, such as by removing material or adding material. The disclosed techniques may advantageously increase the rate at which the temperature of the metal may be reduced as compared to conventional cooling techniques involving pure water, increase metal manufacturing rates, and reduce overall complexity of a metal manufacturing process. The disclosed techniques may also advantageously expand the range of available surface treatments, allow for faster surface treatment processes, and reduce or eliminate the use of hazardous chemicals during a surface treatment process. Such advantages may arise by employing chemical processing that takes place or takes place more efficiently at elevated temperatures.

Reactive quenching solutions and methods of use

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Acworth, GA, United States of America

Peter Lloyd Redmond