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Title: Method of manufacturing metallic products such as sheet by cold working and flash anealing

Abstract

A metallic alloy composition is manufactured into products such as press formed or stamped products or rolled products such as sheet, strip, rod, wire or band by one or more cold working steps with intermediate or final flash annealing. The method can include cold rolling an iron, nickel or titanium aluminide alloy and annealing the cold worked product in a furnace by infrared heating. The flash annealing is preferably carried out by rapidly heating the cold worked product to an elevated temperature for less than one minute. The flash annealing is effective to reduce surface hardness of the cold worked product sufficiently to allow further cold working. The product to be cold worked can be prepared by casting the alloy or by a powder metallurgical technique such as tape casting a mixture of metal powder and a binder, roll compacting a mixture of the powder and a binder or plasma spraying the powder onto a substrate. In the case of tape casting or roll compaction, the initial powder product can be heated to a temperature sufficient to remove volatile components. The method can be used to form a cold rolled sheet which is formed into an electrical resistance heating elementmore » capable of heating to 900.degree. C. in less than 1 second when a voltage up to 10 volts and up to 6 amps is passed through the heating element.« less

Inventors:
 [1];  [2]
  1. Midlothian, VA
  2. Oak Ridge, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
874012
Patent Number(s):
6294130
Assignee:
Chrysalis Technologies Incorporated (Richmond, VA)
Patent Classifications (CPCs):
C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; manufacturing; metallic; products; sheet; cold; flash; anealing; alloy; composition; manufactured; press; formed; stamped; rolled; strip; rod; wire; band; steps; intermediate; final; annealing; rolling; iron; nickel; titanium; aluminide; product; furnace; infrared; heating; preferably; carried; rapidly; elevated; temperature; minute; effective; reduce; surface; hardness; sufficiently; allow; prepared; casting; powder; metallurgical; technique; tape; mixture; metal; binder; roll; compacting; plasma; spraying; substrate; compaction; initial; heated; sufficient; remove; volatile; components; form; electrical; resistance; element; capable; 900; degree; voltage; 10; volts; amps; passed; metallic alloy; flash annealing; remove volatile; resistance heating; volatile components; alloy composition; plasma spray; aluminide alloy; heating element; elevated temperature; electrical resistance; temperature sufficient; plasma spraying; metal powder; titanium aluminide; cold rolled; cold rolling; powder metallurgical; tape casting; rolled sheet; preferably carried; roll compaction; reduce surface; surface hardness; rolled products; stamped products; metallic products; element capable; volatile component; infrared heating; metallic product; resistance heat; tape cast; press formed; manufacturing metallic; /419/148/

Citation Formats

Hajaligol, Mohammad R, and Sikka, Vinod K. Method of manufacturing metallic products such as sheet by cold working and flash anealing. United States: N. p., 2001. Web.
Hajaligol, Mohammad R, & Sikka, Vinod K. Method of manufacturing metallic products such as sheet by cold working and flash anealing. United States.
Hajaligol, Mohammad R, and Sikka, Vinod K. Mon . "Method of manufacturing metallic products such as sheet by cold working and flash anealing". United States. https://www.osti.gov/servlets/purl/874012.
@article{osti_874012,
title = {Method of manufacturing metallic products such as sheet by cold working and flash anealing},
author = {Hajaligol, Mohammad R and Sikka, Vinod K},
abstractNote = {A metallic alloy composition is manufactured into products such as press formed or stamped products or rolled products such as sheet, strip, rod, wire or band by one or more cold working steps with intermediate or final flash annealing. The method can include cold rolling an iron, nickel or titanium aluminide alloy and annealing the cold worked product in a furnace by infrared heating. The flash annealing is preferably carried out by rapidly heating the cold worked product to an elevated temperature for less than one minute. The flash annealing is effective to reduce surface hardness of the cold worked product sufficiently to allow further cold working. The product to be cold worked can be prepared by casting the alloy or by a powder metallurgical technique such as tape casting a mixture of metal powder and a binder, roll compacting a mixture of the powder and a binder or plasma spraying the powder onto a substrate. In the case of tape casting or roll compaction, the initial powder product can be heated to a temperature sufficient to remove volatile components. The method can be used to form a cold rolled sheet which is formed into an electrical resistance heating element capable of heating to 900.degree. C. in less than 1 second when a voltage up to 10 volts and up to 6 amps is passed through the heating element.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

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Works referenced in this record:

Titanium Aluminides - An Overview
journal, January 1984


Titanium Aluminides - An Overview
journal, January 1984


The effect of ternary additions on the vacancy hardening of FeAl
journal, April 1994


A review of recent developments in Fe 3 Al-based alloys
journal, August 1991


A review of recent developments in Fe 3 Al-based alloys
journal, August 1991


Powder Processing of Fe 3 Al-Based Iron-Aluminide Alloys
journal, January 1990


Powder Processing of Fe 3 Al-Based Iron-Aluminide Alloys
journal, January 1990


Microstructure and tensile properties of Fe-40 At. pct Al alloys with C, Zr, Hf, and B additions
journal, September 1989


Microstructure and tensile properties of Fe-40 At. pct Al alloys with C, Zr, Hf, and B additions
journal, September 1989