Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Additive Manufacturing (1)
- Based (1)
- Casting Parameters (1)
- Chill Zone (1)
- Columnar (1)
-
- CubeSat (1)
- Dendrites (1)
- Ductility (1)
- Equiaxed Grains (1)
- Grain Morphology (1)
- Grain Size Measurement (1)
- Grain Structure (1)
- Investment Casting (1)
- Liquidus (1)
- Mold Temperature (1)
- Nickel (1)
- Nickel-Based Superalloys (1)
- PWA 1455 (1)
- Polycrystalline (1)
- Pour Temperature (1)
- Process Improvement (1)
- Property Validation (1)
- Stress Rupture Elongation (1)
- Superalloy (1)
- Test Specimens (1)
Articles 1 - 2 of 2
Full-Text Articles in Manufacturing
Redesign Of Cubesat For Beam Charging, Kuba Preis
Redesign Of Cubesat For Beam Charging, Kuba Preis
Industrial and Manufacturing Engineering
This paper is intended to be a study in the applications of the design freedom granted by additive manufacture in the design of a 1U CubeSat frame. The main loads experienced by a CubeSat are structural (during launch) and thermal (solar radiation). Beam charging is an emerging technology which involves charging a CubeSat using a laser beam. In this paper, a CubeSat frame was redesigned to account for the structural loads induced during launch and the thermal loads induced when beam charging. The thermal, weight, design, and structural requirements for a new CubeSat design were derived. The 1U CubeSat frame …
Modifying Casting Parameters To Improve The High Temperature Ductility Of Investment Cast Nickel-Based Superalloy Pwa 1455, Lars Alexander Hedin, Cole Magnum Introligator
Modifying Casting Parameters To Improve The High Temperature Ductility Of Investment Cast Nickel-Based Superalloy Pwa 1455, Lars Alexander Hedin, Cole Magnum Introligator
Materials Engineering
PCC Structurals, an industry leader in superalloy investment castings, has observed inconsistencies in the stress rupture performance of polycrystalline nickel-based superalloy PWA 1455. PCC has changed their casting parameters to reduce the thermal gradient during cooling but have been unable to correlate these changes with an increase in stress rupture elongation. Metallographic examination of past samples indicated microstructures composed of non- equiaxed dendritic grains with mean diameter of .021 inches along the test axis. A similar study on polycrystalline superalloys has indicated that excessive superheat temperatures above the liquidus can result in large grains identical to those observed, limiting the …