Morphology transition of deformation-induced lenticular martensite in Fe-Ni-C alloys
Journal Article
·
· Acta Metallurgica et Materialia; (United States)
- Academica Sinica, Shenyang (China). Inst. of Metal Research
- Ecole des Mines Parc de Saurupt, Nancy (France). Lab. de Science et Genie des Materiaux Metalliques
The morphology and habit planes of deformation-induced lenticular martensite were investigated by optical and transmission electron microscopy in Fe-30Ni and Fe-30Ni-0.11C alloys. Transitions in morphology were observed with progressive deformation levels going from lenticular to butterfly martensite for the Fe-30Ni-0.11C alloy. The habit planes changed from (225)[sub f] or (259)[sub f] for the thermal lenticular martensite to (111)[sub f] for the strain-induced martensite. The morphology and crystallography of the small butterfly martensites was also investigated. A change in the orientation relationships from K-S to N-W relations was also observed. These changes were attributed to the contribution of mobile dislocations which modified the shear mode form twinning to slip, and to a plastic accommodation of transformation strains.
- OSTI ID:
- 6466848
- Journal Information:
- Acta Metallurgica et Materialia; (United States), Journal Name: Acta Metallurgica et Materialia; (United States) Vol. 41:6; ISSN 0956-7151; ISSN AMATEB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
CARBON ADDITIONS
CHEMICAL COMPOSITION
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DATA
DEFORMATION
DISLOCATIONS
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
GRAIN ORIENTATION
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LINE DEFECTS
MARTENSITE
MICROSCOPY
MICROSTRUCTURE
MORPHOLOGY
NICKEL ALLOYS
NICKEL STEELS
NUMERICAL DATA
OPTICAL MICROSCOPY
ORIENTATION
PHASE TRANSFORMATIONS
SLIP
STEELS
TRANSMISSION ELECTRON MICROSCOPY
TWINNING
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
CARBON ADDITIONS
CHEMICAL COMPOSITION
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DATA
DEFORMATION
DISLOCATIONS
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
GRAIN ORIENTATION
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LINE DEFECTS
MARTENSITE
MICROSCOPY
MICROSTRUCTURE
MORPHOLOGY
NICKEL ALLOYS
NICKEL STEELS
NUMERICAL DATA
OPTICAL MICROSCOPY
ORIENTATION
PHASE TRANSFORMATIONS
SLIP
STEELS
TRANSMISSION ELECTRON MICROSCOPY
TWINNING