Ferrous alloy metallurgy - liquid-lithium corrosion and welding. Progress report, January 1, 1981-December 31, 1981

Technical Report · Thu Jan 01 04:00:00 EST 1981

OSTI ID:5511060

Olson, D L; Matlock, D K

The effects of liquid lithium on the corrosion and mechanical behavior of ferrous alloys in liquid lithium are being investigated. The frequency dependent fatigue-crack-propagation characteristics of 2 1/4 Cr-1 Mo steel and types 304 and 304L stainless steel shows that liquid lithium enhances fatigue crack growth rates in the temperature range of 473/sup 0/K to 973/sup 0/K. A mechanistic interpretation of the effects of lithium indicates that lithium enhances crack growth by inducing embrittlement at low temperatures and by grain boundary penetration at high temperatures. The high temperature corrosion characteristics of 304L stainless steel in low nitrogen liquid lithium have shown that corrosion results in the two-stage development of a ferrite layer. The welding research program is considering the variables which influence the microstructural, mechanical, and thermal expansion properties of dissimilar metal weldments.

• Research Organization: Colorado School of Mines, Golden (USA)
• OSTI ID: 5511060
• Report Number(s): DOE/ER/02313-11; ON: DE82005306
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
ALKALI METALS
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
ELEMENTS
FATIGUE
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
LITHIUM
MATERIALS
MECHANICAL PROPERTIES
METALS
MICROSTRUCTURE
NICKEL ALLOYS
STAINLESS STEEL-304
STAINLESS STEEL-304L
STAINLESS STEELS
STEELS
WELDABILITY
WELDED JOINTS