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Title: Mechanical and Thermal Properties of Ultra-High Carbon Steel Containing Aluminum

Abstract

The properties of ultrahigh carbon steels (UHCS) are strongly influenced by aluminum additions. Hardness studies of quenched UHCS-Al alloys reveal that the temperature for the start of transformation increases with increases in aluminum content. It is shown that this change is a function of the atomic percent of solute and of the valence state when comparisons are made with UHCSs containing silicon and tin as solutes. The thermal expansion of UHCSs with dilute aluminum additions shows no discontinuity in the vicinity of the ferrite-austenite transformation temperature. This is the result of a three phase region of ferrite, carbides and austenite. The slope of the expansion curve is higher in the austenite range than in the ferrite range as a result of the dissolution of carbon in austenite with temperature. Processing to achieve a fine grain size in UHCS-Al alloys was principally by hot and warm working (HWW) followed by isothermal warm working (IWW). The high temperature mechanical properties of a UHCS-10Al-1.5C material show nearly Newtonian-viscous behavior at 900 to 1000 C. Tensile elongations of 1200% without failure were achieved in the 1.5%C material. The high oxidation corrosion resistance of the UHCS-10Al materials is described.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
891732
Report Number(s):
UCRL-PROC-215848
Journal ID: ISSN 0255-5476; TRN: US200622%%337
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Journal Volume: 539 - 543; Conference: Presented at: International Conference onPROCESSING & MANUFACTURING OF ADVANCED MATERIALS (Thermec' 2006) Processing, Fabrication, Properties, Applications, Vancouver, Canada, Jul 04 - Jul 08, 2006
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; ALUMINIUM; AUSTENITE; CARBIDES; CARBON; CARBON STEELS; CORROSION RESISTANCE; FABRICATION; FERRITE; GRAIN SIZE; MANUFACTURING; MECHANICAL PROPERTIES; PROCESSING; THERMAL EXPANSION; THERMODYNAMIC PROPERTIES

Citation Formats

Syn, C K, Lesuer, D R, Goldberg, A, Tsai, H C, and Sherby, O D. Mechanical and Thermal Properties of Ultra-High Carbon Steel Containing Aluminum. United States: N. p., 2005. Web. doi:10.4028/0-87849-428-6.4844.
Syn, C K, Lesuer, D R, Goldberg, A, Tsai, H C, & Sherby, O D. Mechanical and Thermal Properties of Ultra-High Carbon Steel Containing Aluminum. United States. https://doi.org/10.4028/0-87849-428-6.4844
Syn, C K, Lesuer, D R, Goldberg, A, Tsai, H C, and Sherby, O D. 2005. "Mechanical and Thermal Properties of Ultra-High Carbon Steel Containing Aluminum". United States. https://doi.org/10.4028/0-87849-428-6.4844. https://www.osti.gov/servlets/purl/891732.
@article{osti_891732,
title = {Mechanical and Thermal Properties of Ultra-High Carbon Steel Containing Aluminum},
author = {Syn, C K and Lesuer, D R and Goldberg, A and Tsai, H C and Sherby, O D},
abstractNote = {The properties of ultrahigh carbon steels (UHCS) are strongly influenced by aluminum additions. Hardness studies of quenched UHCS-Al alloys reveal that the temperature for the start of transformation increases with increases in aluminum content. It is shown that this change is a function of the atomic percent of solute and of the valence state when comparisons are made with UHCSs containing silicon and tin as solutes. The thermal expansion of UHCSs with dilute aluminum additions shows no discontinuity in the vicinity of the ferrite-austenite transformation temperature. This is the result of a three phase region of ferrite, carbides and austenite. The slope of the expansion curve is higher in the austenite range than in the ferrite range as a result of the dissolution of carbon in austenite with temperature. Processing to achieve a fine grain size in UHCS-Al alloys was principally by hot and warm working (HWW) followed by isothermal warm working (IWW). The high temperature mechanical properties of a UHCS-10Al-1.5C material show nearly Newtonian-viscous behavior at 900 to 1000 C. Tensile elongations of 1200% without failure were achieved in the 1.5%C material. The high oxidation corrosion resistance of the UHCS-10Al materials is described.},
doi = {10.4028/0-87849-428-6.4844},
url = {https://www.osti.gov/biblio/891732}, journal = {},
issn = {0255-5476},
number = ,
volume = 539 - 543,
place = {United States},
year = {Mon Oct 03 00:00:00 EDT 2005},
month = {Mon Oct 03 00:00:00 EDT 2005}
}

Conference:
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