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Title: Gas Atomization of Molten Metal: Part II. Applications

A numerical model was derived to obtain results for two alloys during the Gas Atomization (GA) method. The model equations and governing equations were implemented through the application of part I data. Aspects such as heat transfer, fluid mechanics, thermodynamics and law of motions were taken into account for the formulation of equations that take gas dynamics, droplet dynamics and energy balance or conservation into consideration. The inputs of the model include: Processing parameters such as the size of the droplets, characteristics of the metal alloy, initial temperature of the molten metal, properties and fractions of the atomization gas and the gas pressure. The outputs include velocity and thermal profiles of the droplet and gas. Velocity profiles illustrate the velocity of both droplet and gas, while thermal profiles illustrate cooling rate and the rate of temperature change of the droplets. The alloys are gamma-Titanium Aluminide (γ-TiAl) and Al-3003-O. These alloys were selected due to the vast amount of applications both can have in several industries. Certain processing parameters were held constant, while others were altered. Furthermore, the main focus of this study was to gain insight into which optimal parameters should be utilized within the GA method for these alloysmore » and to provide insight into the behavior of these alloys« less
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [2]
  1. North Carolina A&T State Univ., Greensboro, NC (United States)
  2. Y-12 National Security Complex, Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
NA0002687; NA0003686
Type:
Accepted Manuscript
Journal Name:
American Journal of Engineering and Applied Sciences
Additional Journal Information:
Journal Volume: 9; Journal Issue: 2; Journal ID: ISSN 1941-7020
Publisher:
Science Publications
Research Org:
North Carolina A&T State Univ., Greensboro, NC (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Contributing Orgs:
Y12; Y-12 National Security Complex
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Gas Atomization; Molten Metal; Metal Powder; Heat Transfer; Droplet Dynamics; Gas Atomization, Molten Metal, Metal Powder, Heat Transfer, Droplet Dynamics
OSTI Identifier:
1410812
Alternate Identifier(s):
OSTI ID: 1439407