Weld metal resistant to neutron-bombardment embrittlement
Creators
Description
A range of weld metals is disclosed that is resistant to changes in nil-ductility transition temperatures (Ndtt) caused by exposure to neutron fluences greater than 1 X 1017 neutrons per square centimeter. Designed for use in nuclear reactor pressure vessels, the weldment that exhibits this resistance to neutroninduced ductility decreases is characterized by the condition that an index is less than 0.4. That index is the ratio of the sum of the weight percentages of nickel and silicon in the metal to the sum of the weight percentages in the metal of manganese, chromium and molybdenum. This constraint on the index, when applied to a weld metal within the composition ranges given in this specification, gives a weldment resistant to neutron-induced property changes
Availability note (English)
U.S. Commissioner of Patents, Washington, D.C. 20231, USA, $.50.Additional details
Additional titles
- Augmented title (English)
- Patent
Publishing Information
- Imprint Pagination
- v p.
- IPC:
- Int. Cl.B23K 9/00.
- IPC
- Int. Cl.B23K 9/00.
- Patent number
- US patent document 4,273,838/A/
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 13672162
- Subject category
- S22: GENERAL STUDIES OF NUCLEAR REACTORS; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- IRON ALLOYS; MANGANESE ALLOYS; MOLYBDENUM ALLOYS; NEUTRONS; PHYSICAL RADIATION EFFECTS; PRESSURE VESSELS; RADIATION HARDENING; REACTOR MATERIALS; WELDED JOINTS
- Descriptors DEC
- ALLOYS; BARYONS; CONTAINERS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; HARDENING; JOINTS; NUCLEONS; RADIATION EFFECTS; TRANSITION ELEMENT ALLOYS