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Title: Microstructure Evolution During Spray Rolling and Heat Treatment of 2124 Al

Abstract

Spray rolling is a strip casting technology that combines elements of spray forming and twin-roll casting. It consists of atomizing molten metal with a high velocity inert gas, quenching the resultant droplets in flight, and directing the spray between mill rolls. In-flight convection heat transfer from atomized droplets and conduction heat transfer at the rolls rapidly move an alloy’s latent heat. Hot deformation of the semi-solid material in the rolls results in fully consolidated, rapidly-solidified product. While similar in many ways to twin-roll casting, spray rolling is able to process a broader range of alloys and operates at a higher production rate. A laboratory-scale strip caster has been constructed at INL and used to evaluate the interplay of processing parameters and strip quality while producing strips up to 200 mm wide and 1.6 – 6.4 mm thick. Plans are underway to scale to 600 mm width and demonstrate steady-state operation. As-spray-rolled strip is characterized by a flat, uniformly thick profile with minimal porosity or segregation. This paper examines how processing parameters influence the microstructure transformations that take place during spray rolling and post-deposition heat treatment of 2124 Al.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
DOE - EE
OSTI Identifier:
911655
Report Number(s):
INL/CON-06-11193
TRN: US200801%%112
DOE Contract Number:  
DE-AC07-99ID-13727
Resource Type:
Conference
Resource Relation:
Conference: 3rd International Conference on Spray Deposition and Melt Atomization and 6th International Conferen,Bremen, Germany,09/04/2006,09/06/2006
Country of Publication:
United States
Language:
English
Subject:
36 - MATERIALS SCIENCE; ALLOYS; ATOMIZATION; CASTING; CONVECTION; DEFORMATION; DEPOSITION; HEAT TRANSFER; HEAT TREATMENTS; MICROSTRUCTURE; POROSITY; PROCESSING; PRODUCTION; QUENCHING; ROLLING; SEGREGATION; TRANSFORMATIONS; VELOCITY; aluminum; process developmemt

Citation Formats

McHugh, K M, Lin, Y, Zhou, Y, Johnson, S B, Delplanque, J P, and Lavernia, E J. Microstructure Evolution During Spray Rolling and Heat Treatment of 2124 Al. United States: N. p., 2006. Web.
McHugh, K M, Lin, Y, Zhou, Y, Johnson, S B, Delplanque, J P, & Lavernia, E J. Microstructure Evolution During Spray Rolling and Heat Treatment of 2124 Al. United States.
McHugh, K M, Lin, Y, Zhou, Y, Johnson, S B, Delplanque, J P, and Lavernia, E J. 2006. "Microstructure Evolution During Spray Rolling and Heat Treatment of 2124 Al". United States. https://www.osti.gov/servlets/purl/911655.
@article{osti_911655,
title = {Microstructure Evolution During Spray Rolling and Heat Treatment of 2124 Al},
author = {McHugh, K M and Lin, Y and Zhou, Y and Johnson, S B and Delplanque, J P and Lavernia, E J},
abstractNote = {Spray rolling is a strip casting technology that combines elements of spray forming and twin-roll casting. It consists of atomizing molten metal with a high velocity inert gas, quenching the resultant droplets in flight, and directing the spray between mill rolls. In-flight convection heat transfer from atomized droplets and conduction heat transfer at the rolls rapidly move an alloy’s latent heat. Hot deformation of the semi-solid material in the rolls results in fully consolidated, rapidly-solidified product. While similar in many ways to twin-roll casting, spray rolling is able to process a broader range of alloys and operates at a higher production rate. A laboratory-scale strip caster has been constructed at INL and used to evaluate the interplay of processing parameters and strip quality while producing strips up to 200 mm wide and 1.6 – 6.4 mm thick. Plans are underway to scale to 600 mm width and demonstrate steady-state operation. As-spray-rolled strip is characterized by a flat, uniformly thick profile with minimal porosity or segregation. This paper examines how processing parameters influence the microstructure transformations that take place during spray rolling and post-deposition heat treatment of 2124 Al.},
doi = {},
url = {https://www.osti.gov/biblio/911655}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Sep 01 00:00:00 EDT 2006},
month = {Fri Sep 01 00:00:00 EDT 2006}
}

Conference:
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