Lightweight nanocomposite aluminium alloys with increased ductility and strength produced via Powder Metallurgy process

May 21, 2012

May 21, 2012

Powdermet Inc., Ohio, USA, has announced that it has made significant advancements to improve performance levels of its forged nanocomposite aluminium alloys. Working with the US Army and the National Science Foundation, Powdermet’s MComP(TM) micro-nanocomposite aluminium alloys have achieved 30-50% higher ductility than state-of-the-art high strength aluminium alloys such as aluminium lithium.

Powdermet has devised a powder metallurgy process allowing the retention of nano-crystallites and ductile phases throughout the powder forging process, resulting in near-net shape, high strength aluminium materials having over 16% elongation to failure strengths, exceeding 350MPa (50KSI).  Competing aluminium-lithium high strength alloys have tensile strengths of 50-70ksi at 8-12% elongation, whereas the nanocomposite materials are showing 50-72ksi with 7-16% elongation depending on forging conditions. 

Powdermet has also shown nanocomposite aluminium alloys with up to 200ksi strengths with 1-2% elongation. Current product development goals are to continue process development to achieve a 100ksi, 8% ductility system that is cost-effective and utilises no costly strategic or rare-earth alloying additions. The company also plans to demonstrate repeatable large cross-section part manufacturing using its unique small footprint 5000-ton press and related equipment in its newly acquired and refurbished multimillion dollar Deformation Processing Centre.  

Posted by: Paul Whittaker, Editor, [email protected]   

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May 21, 2012

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Extensive Powder Metallurgy industry news coverage, and the following exclusive deep-dive articles and reports:

  • From powder modification to rejuvenation: Fluidised Bed Reactors in metal powder production and Additive Manufacturing
  • Retech: Enabling the atomisation of reactive and refractory alloys at substantially higher levels of productivity and lower cost
  • Sustainability in Powder Metallurgy: Highlights from the 41st Hagen Symposium
  • Innovations from Japan’s Powder Metallurgy industry: award winners highlight novel automotive and healthcare applications

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