Phase diagram of Fe--Cr--Co permanent magnet system

Conference · Wed Jun 01 00:00:00 EDT 1977

OSTI ID:7218909

Kaneko, H; Homma, M; Nakamura, K; Ikada, M; Thomas, G

The miscibility gap of the ..cap alpha.. phase in Fe-Cr-Co permanent magnet alloys is constructed using mechanical hardness and Curie temperature measurements. It is found that the miscibility gap of the Fe-Cr binary system develops into Fe-Cr-Co ternary system, and that the addition of cobalt raises the decomposition temperature, and extends the difference in concentrations between the iron rich phase (..cap alpha../sub 1/) and the chromium rich phase (..cap alpha../sub 2/). For instance, the ..cap alpha.. phase of an Fe-31 percent Cr-23 percent Co alloy exhibits a miscibility gap below 670/sup 0/C, and decomposes into the ..cap alpha../sub 1/ phase of 65 percent Fe-32 percent Co-3 percent Cr and the ..cap alpha../sub 2/ phase of 69 percent Cr-21 percent Fe-10 percent Co at 600/sup 0/C.

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7218909
• Report Number(s): LBL-6216; CONF-770638-2
• Resource Relation: Conference: Intermac conference, Los Angeles, CA, USA, 6 Jun 1977
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM ALLOYS
PHASE TRANSFORMATIONS
COBALT ALLOYS
IRON ALLOYS
MISCIBLE-PHASE DISPLACEMENT
PERMANENT MAGNETS
PHASE DIAGRAMS
TERNARY ALLOY SYSTEMS
ALLOY SYSTEMS
ALLOYS
DIAGRAMS
ENHANCED RECOVERY
FLUID INJECTION
MAGNETS
360102* - Metals & Alloys- Structure & Phase Studies