A process for reducing secondary reaction zone formation articles includes the steps of non-selective removing an external surface of an as-cast article free of coating to form an as-cast article having a surface substantially free of residual surface stress; and applying a coating material upon the surface substantially free of residual surface stress to form a coated as-cast article having a coating layer disposed upon the surface substantially free of residual surface stress.
Sudhangshu Bose - Manchester CT, US Alan D. Cetel - West Hartford CT, US David A. Litton - West Hartford CT, US Michael J. Maloney - Marlborough CT, US Venkatarama K. Seetharaman - Rocky Hill CT, US Shiela Woodard - South Windsor CT, US
Assignee:
UNITED TECHNOLOGIES CORPORATION - Hartford CT
International Classification:
B32B 15/01 C22C 19/05
US Classification:
428680, 420445, 420443
Abstract:
A metallic coating for use in a high temperature application is created from a nickel base alloy containing from 5.0 to 10.5 wt % aluminum, from 4.0 to 15 wt % chromium, from 2.0 to 8.0 wt % tungsten, from 3.0 to 10 wt % tantalum, and the balance nickel. The metallic coating has particular utility in protecting single crystal superalloys used in high temperature applications such as turbine engine components.
- Farmington CT, US Dilip M. Shah - Glastonbury CT, US Steven J. Bullied - Pomfret CT, US Shiela R. Woodard - South Windsor CT, US
Assignee:
Raytheon Technologies Corporation - Farmington CT
International Classification:
C30B 21/02 B22D 27/04 C22C 19/05 C30B 29/52
Abstract:
A casting method includes forming a seed. The seed has a first end and a second end. The forming includes bending a seed precursor. The seed second end is placed in contact or spaced facing relation a chill plate. The first end is contacted with molten material. The molten material is cooled and solidifies so that a crystalline structure of the seed propagates into the solidifying material. The forming further includes inserting the bent seed precursor into a sleeve leaving the bent seed precursor protruding from a first end of the sleeve.
- Farmington CT, US Steven J. Bullied - Pomfret CT, US Ryan C. Breneman - Newington CT, US Shiela R. Woodard - South Windsor CT, US Carl R. Verner - Windsor CT, US
Assignee:
Raytheon Technologies Corporation - Farmington CT
International Classification:
B22D 27/04 C30B 11/14 C30B 29/52
Abstract:
A casting method includes forming a seed. The seed has a first end and a second end and an inner diameter (ID) surface and an outer diameter (OD) surface. The seed second end is placed in contact or spaced facing relation with a chill plate. The first end is contacted with molten material. The molten material is cooled and solidified so that a crystalline structure of the seed propagates into the solidifying material. At least a portion of the seed contacted with the molten material has a solidus higher than a solidus of at least an initial pour portion of the molten material.
- Farmington CT, US Shiela R. Woodard - South Windsor CT, US Sara Ann Beck - Manchester CT, US Andrew L. Haynes - Glastonbury CT, US
Assignee:
RAYTHEON TECHNOLOGIES CORPORATION - Farmington CT
International Classification:
C22C 19/05
Abstract:
An alloy that may include nickel, aluminum from 4.8 wt. % to 5.15 wt. %; cobalt from 18 wt. % to 19 wt. %, chromium from 11.9 wt. % to 12.9 wt. %, molybdenum from 2.8 wt. % to 3.6 wt. %, and niobium from 0.05 wt. % to 0.1 wt. %. The alloy may further include tungsten from 0.05 wt. % to 0.1 wt. %. The alloy may further include tantalum from 0.05 wt. % to 0.1 wt. %.
- Farmington CT, US Steven J. Bullied - Pomfret CT, US Ryan C. Breneman - Newington CT, US Shiela R. Woodard - South Windsor CT, US Carl R. Verner - Windsor CT, US
Assignee:
Raytheon Technologies Corporation - Farmington CT
International Classification:
B22D 27/04 C30B 29/52 C30B 11/14
Abstract:
A casting method includes forming a seed. The seed has a first end and a second end and an inner diameter (ID) surface and an outer diameter (OD) surface. The seed second end is placed in contact or spaced facing relation with a chill plate. The first end is contacted with molten material. The molten material is cooled and solidified so that a crystalline structure of the seed propagates into the solidifying material. At least a portion of the seed contacted with the molten material has a solidus higher than a solidus of at least an initial pour portion of the molten material.
- Farmington CT, US Shiela R. Woodard - South Windsor CT, US Steven J. Bullied - Pomfret CT, US Ryan C. Breneman - Newington CT, US
Assignee:
Raytheon Technologies Corporation - Farmington CT
International Classification:
B22D 27/04 B22D 21/02 C30B 11/14
Abstract:
A casting method includes: forming a seed, the seed having a first end and a second end, the forming including bending a seed precursor; placing the seed second end in contact or spaced facing relation with a chill plate; contacting the first end with molten material; and cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material. The forming further included reducing a thickness of the seed proximate the first end relative to a thickness of the seed proximate the second end.
Shiela Woodard 1989 graduate of Hillsboro High School in Hillsboro, IL is on Memory Lane. Get caught up with Shiela and other high school alumni from ...