High-strength magnesium sheets

  • 16-Sep-2010 09:01 EDT
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Magnesium sheet technology from nanoMAG, a subsidiary of Thixomat, provides 200% higher strength and improved toughness over conventional magnesium, the company claims, while providing the strength of carbon steel sheet at one-fourth the weight. The material is targeted at systems including military vehicle armor and structural aerospace applications. The process features isotropic fine-grained strengthening, which permits low-volume manufacturing at a competitive cost. The company received a U.S. Department of Defense contract to develop lightweight composite military vehicle armor using nanoMAG sheet as the base structural carrier for the vehicle platform. The Thixomolding Thermal Mechanical Process, developed with the University of Michigan, produces ultrafine-grain “nanocrystalline” magnesium sheet with properties said to be superior to conventional materials. The nano structure is produced in-situ in a bulk form, avoiding the manufacturing issues associated with handling fine powders. The process uses Thixomolding technology to produce a sheet bar that is put through secondary thermomechanical heat processing. A key factor is precise control of the microstructure, which increases yield strength.

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