Age Softening Characteristics of Annealed 2-1/4Cr-1Mo Steel in the Temperature Range 424 to 704°C

[+] Author and Article Information
P. P. Pizzo

Advanced Research and Applications Corporation, Sunnyvale, Calif. 94035

G. L. Mandurrago

Advanced Reactor Systems Department, General Electric Company, San Jose, Calif.

J. Eng. Mater. Technol 103(1), 62-70 (Jan 01, 1981) (9 pages) doi:10.1115/1.3224973 History: Received February 06, 1980; Online September 15, 2009


The short-term age softening characteristics of isothermal annealed and post weld heat treated 2-1/4Cr-1Mo steel have been investigated over the temperature range 454 to 727°C (850 to 1340°F). Significant degradation in flow strength is observed for times and temperatures within the current service regime of the commercial alloy. Age softening is atypical: flow strength degradation is most rapid at some intermediate temperature. The reduction in flow strength is greatest, and occurs most rapidly, at 575°C (1067°F). The strength degradation is attributed to time-dependent redistribution of molybdenum within the proeutectoid ferrite. It is predicted that thermal aging in the temperature range 427 to 593°C (800 to 1000°F) will result in similar strength decrements for annealed 2-1/4Cr-1Mo steel regardless of prior thermal history above 704°C (1300°F).

Copyright © 1981 by ASME
Your Session has timed out. Please sign back in to continue.





Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In