U.S. Department of EnergyOffice of Scientific and Technical Information
Thick-section weldments in 21-6-9 and 316LN stainless steel for fusion energy applications
Abstract
The Burning Plasma Experiment (BPX), formerly known as the Compact Ignition Tokomak, will be a major advance in the design of a fusion reactor. The successful construction of fusion reactors will require extensive welding of thick-section stainless steel plates. Severe service conditions will be experienced by the structure. Operating temperatures will range from room temperature (300 K) to liquid nitrogen temperature (77 K), and perhaps even lower. The structure will be highly stressed, and subject to sudden impact loads if plasma disruptions occur. This demands a combination of high strength and high toughness from the weldments. Significant portions of the welding will be done in the field, so preweld and postweld heat treatments will be difficult. The thick sections to be welded will require a high deposition rate process, and will result in significant residual stresses in the materials. Inspection of these thick sections in complex geometries will be very difficult. All of these constraints make it essential that the welding procedures and alloys be well understood, and the mechanical properties of the welds and their heat-affected zones must be adequately characterized. The candidate alloy for structural applications in the BPX such as the magnet cases was initially selected asmore »
- Authors:
- Publication Date:
- Research Org.:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Org.:
- USDOE; USDOE, Washington, DC (United States)
- OSTI Identifier:
- 5586135
- Report Number(s):
- CONF-910635-8
ON: DE91015307
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Conference
- Resource Relation:
- Conference: Cryogenic engineering conference and international cryogenic materials conference, Huntsville, AL (United States), 11-14 Jun 1991
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 36 MATERIALS SCIENCE; STAINLESS STEEL-21-6-9; WELDING; STAINLESS STEEL-316L; COMPACT IGNITION TOKAMAK; MECHANICAL PROPERTIES; THERMONUCLEAR REACTOR MATERIALS; ALLOYS; AUSTENITIC STEELS; CHROMIUM ALLOYS; CHROMIUM-NICKEL STEELS; CHROMIUM-NICKEL-MOLYBDENUM STEELS; CLOSED PLASMA DEVICES; CORROSION RESISTANT ALLOYS; FABRICATION; HEAT RES; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; JOINING; MANGANESE ALLOYS; MATERIALS; MOLYBDENUM ALLOYS; NICKEL ALLOYS; STAINLESS STEELS; STEEL-CR17NI12MO3-L; STEEL-CR21MN9NI6; STEELS; THERMONUCLEAR DEVICES; THERMONUCLEAR REACTORS; TOKAMAK DEVICES; TOKAMAK TYPE REACTORS; 700209* - Fusion Power Plant Technology- Component Development & Materials Testing; 360101 - Metals & Alloys- Preparation & Fabrication; 360103 - Metals & Alloys- Mechanical Properties
Citation Formats
Alexander, D J, and Goodwin, G M. Thick-section weldments in 21-6-9 and 316LN stainless steel for fusion energy applications. United States: N. p., 1991.
Web.
Alexander, D J, & Goodwin, G M. Thick-section weldments in 21-6-9 and 316LN stainless steel for fusion energy applications. United States.
Alexander, D J, and Goodwin, G M. 1991.
"Thick-section weldments in 21-6-9 and 316LN stainless steel for fusion energy applications". United States. https://www.osti.gov/servlets/purl/5586135.
@article{osti_5586135,
title = {Thick-section weldments in 21-6-9 and 316LN stainless steel for fusion energy applications},
author = {Alexander, D J and Goodwin, G M},
abstractNote = {The Burning Plasma Experiment (BPX), formerly known as the Compact Ignition Tokomak, will be a major advance in the design of a fusion reactor. The successful construction of fusion reactors will require extensive welding of thick-section stainless steel plates. Severe service conditions will be experienced by the structure. Operating temperatures will range from room temperature (300 K) to liquid nitrogen temperature (77 K), and perhaps even lower. The structure will be highly stressed, and subject to sudden impact loads if plasma disruptions occur. This demands a combination of high strength and high toughness from the weldments. Significant portions of the welding will be done in the field, so preweld and postweld heat treatments will be difficult. The thick sections to be welded will require a high deposition rate process, and will result in significant residual stresses in the materials. Inspection of these thick sections in complex geometries will be very difficult. All of these constraints make it essential that the welding procedures and alloys be well understood, and the mechanical properties of the welds and their heat-affected zones must be adequately characterized. The candidate alloy for structural applications in the BPX such as the magnet cases was initially selected as 21-6-9 austenitic stainless steel, and later changed to 316LN stainless steel. This study examined several possible filler materials for thick-section (25 to 50 mm) weldments in these two materials. The tensile and Charpy V-notch properties were measured at room temperature and 77 K. The fracture toughness was measured for promising materials.},
doi = {},
url = {https://www.osti.gov/biblio/5586135},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}