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Title: 9 Cr-- 1 Mo steel material for high temperature application

Abstract

One or more embodiments relates to a high-temperature, titanium alloyed, 9 Cr-1 Mo steel exhibiting improved creep strength and oxidation resistance at service temperatures up to 650.degree. C. The 9 Cr-1 Mo steel has a tempered martensite microstructure and is comprised of both large (0.5-3 .mu.m) primary titanium carbides and small (5-50 nm) secondary titanium carbides in a ratio of. from about 1:1.5 to about 1.5:1. The 9 Cr-1 Mo steel may be fabricated using exemplary austenizing, rapid cooling, and tempering steps without subsequent hot working requirements. The 9 Cr-1 Mo steel exhibits improvements in total mass gain, yield strength, and time-to-rupture over ASTM P91 and ASTM P92 at the temperature and time conditions examined.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1080306
Patent Number(s):
8317944
Application Number:
13/282,211
Assignee:
U.S. Department of Energy (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Jablonski, Paul D, Alman, David, Dogan, Omer, Holcomb, Gordon, and Cowen, Christopher. 9 Cr-- 1 Mo steel material for high temperature application. United States: N. p., 2012. Web.
Jablonski, Paul D, Alman, David, Dogan, Omer, Holcomb, Gordon, & Cowen, Christopher. 9 Cr-- 1 Mo steel material for high temperature application. United States.
Jablonski, Paul D, Alman, David, Dogan, Omer, Holcomb, Gordon, and Cowen, Christopher. Tue . "9 Cr-- 1 Mo steel material for high temperature application". United States. https://www.osti.gov/servlets/purl/1080306.
@article{osti_1080306,
title = {9 Cr-- 1 Mo steel material for high temperature application},
author = {Jablonski, Paul D and Alman, David and Dogan, Omer and Holcomb, Gordon and Cowen, Christopher},
abstractNote = {One or more embodiments relates to a high-temperature, titanium alloyed, 9 Cr-1 Mo steel exhibiting improved creep strength and oxidation resistance at service temperatures up to 650.degree. C. The 9 Cr-1 Mo steel has a tempered martensite microstructure and is comprised of both large (0.5-3 .mu.m) primary titanium carbides and small (5-50 nm) secondary titanium carbides in a ratio of. from about 1:1.5 to about 1.5:1. The 9 Cr-1 Mo steel may be fabricated using exemplary austenizing, rapid cooling, and tempering steps without subsequent hot working requirements. The 9 Cr-1 Mo steel exhibits improvements in total mass gain, yield strength, and time-to-rupture over ASTM P91 and ASTM P92 at the temperature and time conditions examined.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {11}
}