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:
Apr. 10, 2007
Filed:
Dec. 02, 2004
Deepak Saha, Worcester, MA (US);
Sumanth Shankar, Dundas, CA;
Diran Apelian, West Boylston, MA (US);
Makhlouf M. Makhlouf, Shrewsbury, MA (US);
Deepak Saha, Worcester, MA (US);
Sumanth Shankar, Dundas, CA;
Diran Apelian, West Boylston, MA (US);
Makhlouf M. Makhlouf, Shrewsbury, MA (US);
Worcester Polytechnic Institute, Worchester, MA (US);
Abstract
Preferred embodiments of the present invention include methods that allow for casting alloys, and preferentially casting wrought alloys to circumvent problems such as, for example, hot tearing. Preferred embodiments of the present invention provide for alloys having predominantly spherical primary α-aluminum grains in their microstructure (i.e., substantially free of dendrites) formed by mixing two liquids of differing compositions that are held at predetermined temperatures, such that when mixed they produce a predetermined alloy composition at a predetermined temperature that is inclined to solidify with a predominantly spherical grain structure that minimizes the alloy's tendency towards hot tearing.