The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2020
Filed:
Mar. 13, 2017
Raytheon Company, Waltham, MA (US);
Norman Dana Nelson, Rowley, MA (US);
Ralph P. Mason, Chelmsford, MA (US);
Mark J. Pistorino, Wakefield, MA (US);
Raytheon Company, Waltham, MA (US);
Abstract
An aluminum alloy precursor composition and method for fusion processing is provided which reduces hot cracking, improves compositional control, reduces porosity, and/or enhances the mechanical properties of the fusion processed article. The precursor material and fusion process using the same may be utilized for forming an article that meets compositional specifications for aluminum 6061 alloy, while minimizing defects and meeting desired strength and ductility requirements. The fusion process may include a leading energy beam for liquefying the precursor material to form a melt pool, and a trailing energy beam directed toward a trailing region of the melt pool. The trailing energy beam may be configured to enhance agitation and/or redistribution of liquid in the melt pool to prevent hot cracking, reduce porosity, or improve other characteristics of the solidified part. The method also may improve processing parameters, such as adjusting vacuum level to prevent volatilization of alloying elements.