During the fabrication processes of boiler components, heating, forming and welding processes are commonly applied to the materials used. The effect of heating and strain induced by the these fabrication processes are very important in maintaining the integrity of creep strength enhanced steels, because it is well known that the mechanical properties of normalized and tempered high strength steels are relatively sensitive to thermal and work history. In particular, while Gr.91 steel has been used extensively for boiler and pressure components over the last two decade, the heat treatment and forming procedures for this steel are not fully established based on fundamental transformation and strain behavior. This paper deals with the phase transformation behavior of Gr.91 during tempering at around the Ac1 temperature, and the hardness/creep properties of Gr.91 steel heated at temperatures from just below Ac1 to above Ac3 combined with strain.
Skip Nav Destination
ASME/JSME 2004 Pressure Vessels and Piping Conference
July 25–29, 2004
San Diego, California, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4671-7
PROCEEDINGS PAPER
Phase Transformation and Properties of Gr.91 at Around Critical Temperature
N. Nishimura
N. Nishimura
Mitsubishi Heavy Industries, Ltd.
Search for other works by this author on:
F. Masuyama
Kyushu Institute of Technology
N. Nishimura
Mitsubishi Heavy Industries, Ltd.
Paper No:
PVP2004-2574, pp. 85-91; 7 pages
Published Online:
August 12, 2008
Citation
Masuyama, F, & Nishimura, N. "Phase Transformation and Properties of Gr.91 at Around Critical Temperature." Proceedings of the ASME/JSME 2004 Pressure Vessels and Piping Conference. Experience With Creep-Strength Enhanced Ferritic Steels and New and Emerging Computational Methods. San Diego, California, USA. July 25–29, 2004. pp. 85-91. ASME. https://doi.org/10.1115/PVP2004-2574
Download citation file:
4
Views
0
Citations
Related Proceedings Papers
Investigation of CGHAZ During Single and Multi Pass Submerged Arc Welding of High Strength Steel
PVP2020
Finite Element Modelling of a Tube to Vessel Attachment Weld and Local Post-Weld Heat Treatment
PVP2011
Related Articles
Creep Crack Growth Behavior in Power Plant Boiler and Steam Pipe Steels
J. Pressure Vessel Technol (May,1988)
Structural Integrity of a Standpipe Component in a Petrochemical Catalytic Cracking Unit: Part 2—Assessment of Embrittlement Effects
J. Eng. Mater. Technol (July,2000)
New Steel Alloys for the Design of Heat Recovery Steam Generator Components of Combined Cycle Gas Plants
J. Eng. Gas Turbines Power (May,2010)
Related Chapters
Materials
Power Boilers: A Guide to the Section I of the ASME Boiler and Pressure Vessel Code, Second Edition
Part 2, Section II—Materials and Specifications
Companion Guide to the ASME Boiler & Pressure Vessel Code, Volume 1, Second Edition
Part 2, Section II—Materials and Specifications
Companion Guide to the ASME Boiler and Pressure Vessel Code, Volume 1, Third Edition